Intravenous Vitamin C in Adults with Sepsis in the Intensive Care Unit.

BACKGROUND: Studies that have evaluated the use of intravenous vitamin C in adults with sepsis who were receiving vasopressor therapy in the intensive care unit (ICU) have shown mixed results with respect to the risk of death and organ dysfunction. METHODS: In this randomized, placebo-controlled trial, we assigned adults who had been in the ICU for no longer than 24 hours, who had proven or suspected infection as the main diagnosis, and who were receiving a vasopressor to receive an infusion of either vitamin C (at a dose of 50 mg per kilogram of body weight) or matched placebo administered every 6 hours for up to 96 hours. The primary outcome was a composite of death or persistent organ dysfunction (defined by the use of vasopressors, invasive mechanical ventilation, or new renal-replacement therapy) on day 28. RESULTS: A total of 872 patients underwent randomization (435 to the vitamin C group and 437 to the control group). The primary outcome occurred in 191 of 429 patients (44.5%) in the vitamin C group and in 167 of 434 patients (38.5%) in the control group (risk ratio, 1.21; 95% confidence interval [CI], 1.04 to 1.40; P = 0.01). At 28 days, death had occurred in 152 of 429 patients (35.4%) in the vitamin C group and in 137 of 434 patients (31.6%) in the placebo group (risk ratio, 1.17; 95% CI, 0.98 to 1.40) and persistent organ dysfunction in 39 of 429 patients (9.1%) and 30 of 434 patients (6.9%), respectively (risk ratio, 1.30; 95% CI, 0.83 to 2.05). Findings were similar in the two groups regarding organ-dysfunction scores, biomarkers, 6-month survival, health-related quality of life, stage 3 acute kidney injury, and hypoglycemic episodes. In the vitamin C group, one patient had a severe hypoglycemic episode and another had a serious anaphylaxis event. CONCLUSIONS: In adults with sepsis receiving vasopressor therapy in the ICU, those who received intravenous vitamin C had a higher risk of death or persistent organ dysfunction at 28 days than those who received placebo. (Funded by the Lotte and John Hecht Memorial Foundation; LOVIT ClinicalTrials.gov number, NCT03680274.).

Resumption of Cardiac Activity after Withdrawal of Life-Sustaining Measures.

BACKGROUND: The minimum duration of pulselessness required before organ donation after circulatory determination of death has not been well studied. METHODS: We conducted a prospective observational study of the incidence and timing of resumption of cardiac electrical and pulsatile activity in adults who died after planned withdrawal of life-sustaining measures in 20 intensive care units in three countries. Patients were intended to be monitored for 30 minutes after determination of death. Clinicians at the bedside reported resumption of cardiac activity prospectively. Continuous blood-pressure and electrocardiographic (ECG) waveforms were recorded and reviewed retrospectively to confirm bedside observations and to determine whether there were additional instances of resumption of cardiac activity. RESULTS: A total of 1999 patients were screened, and 631 were included in the study. Clinically reported resumption of cardiac activity, respiratory movement, or both that was confirmed by waveform analysis occurred in 5 patients (1%). Retrospective analysis of ECG and blood-pressure waveforms from 480 patients identified 67 instances (14%) with resumption of cardiac activity after a period of pulselessness, including the 5 reported by bedside clinicians. The longest duration after pulselessness before resumption of cardiac activity was 4 minutes 20 seconds. The last QRS complex coincided with the last arterial pulse in 19% of the patients. CONCLUSIONS: After withdrawal of life-sustaining measures, transient resumption of at least one cycle of cardiac activity after pulselessness occurred in 14% of patients according to retrospective analysis of waveforms; only 1% of such resumptions were identified at the bedside. These events occurred within 4 minutes 20 seconds after a period of pulselessness. (Funded by the Canadian Institutes for Health Research and others.).

Pharmacological agents for procedural sedation and analgesia in the emergency department and intensive care unit: a systematic review and network meta-analysis of randomised trials.

BACKGROUND: We aimed to evaluate the comparative effectiveness and safety of various i.v. pharmacologic agents used for procedural sedation and analgesia (PSA) in the emergency department (ED) and ICU. We performed a systematic review and network meta-analysis to enable direct and indirect comparisons between available medications. METHODS: We searched Medline, EMBASE, Cochrane, and PubMed from inception to 2 March 2023 for RCTs comparing two or more procedural sedation and analgesia medications in all patients (adults and children >30 days of age) requiring emergent procedures in the ED or ICU. We focused on the outcomes of sedation recovery time, patient satisfaction, and adverse events (AEs). We performed frequentist random-effects model network meta-analysis and used the Grading of Recommendations, Assessment, Development, and Evaluation (GRADE) approach to rate certainty in estimates. RESULTS: We included 82 RCTs (8105 patients, 78 conducted in the ED and four in the ICU) of which 52 studies included adults, 23 included children, and seven included both. Compared with midazolam-opioids, recovery time was shorter with propofol (mean difference 16.3 min, 95% confidence interval [CI] 8.4-24.3 fewer minutes; high certainty), and patient satisfaction was better with ketamine-propofol (mean difference 1.5 points, 95% CI 0.3-2.6 points, high certainty). Regarding AEs, compared with midazolam-opioids, respiratory AEs were less frequent with ketamine (relative risk [RR] 0.55, 95% CI 0.32-0.96; high certainty), gastrointestinal AEs were more common with ketamine-midazolam (RR 3.08, 95% CI 1.15-8.27; high certainty), and neurological AEs were more common with ketamine-propofol (RR 3.68, 95% CI 1.08-12.53; high certainty). CONCLUSION: When considering procedural sedation and analgesia in the ED and ICU, compared with midazolam-opioids, sedation recovery time is shorter with propofol, patient satisfaction is better with ketamine-propofol, and respiratory adverse events are less common with ketamine.

Do Thresholds for Invasive Ventilation in Hypoxemic Respiratory Failure Exist? A Cohort Study.

Rationale: Invasive ventilation is a significant event for patients with respiratory failure. Physiologic thresholds standardize the use of invasive ventilation in clinical trials, but it is unknown whether thresholds prompt invasive ventilation in clinical practice. Objectives: To measure, in patients with hypoxemic respiratory failure, the probability of invasive ventilation within 3 hours after meeting physiologic thresholds. Methods: We studied patients admitted to intensive care receiving FiO2 of 0.4 or more via nonrebreather mask, noninvasive positive pressure ventilation, or high-flow nasal cannula, using data from the Medical Information Mart for Intensive Care (MIMIC)-IV database (2008-2019) and the Amsterdam University Medical Centers Database (AmsterdamUMCdb) (2003-2016). We evaluated 17 thresholds, including the ratio of arterial to inspired oxygen, the ratio of saturation to inspired oxygen ratio, composite scores, and criteria from randomized trials. We report the probability of invasive ventilation within 3 hours of meeting each threshold and its association with covariates using odds ratios (ORs) and 95% credible intervals (CrIs). Measurements and Main Results: We studied 4,726 patients (3,365 from MIMIC, 1,361 from AmsterdamUMCdb). Invasive ventilation occurred in 28% (1,320). In MIMIC, the highest probability of invasive ventilation within 3 hours of meeting a threshold was 20%, after meeting prespecified neurologic or respiratory criteria while on vasopressors, and 19%, after a ratio of arterial to inspired oxygen of <80 mm Hg. In AmsterdamUMCdb, the highest probability was 34%, after vasopressor initiation, and 25%, after a ratio of saturation to inspired oxygen of <90. The probability after meeting the threshold from randomized trials was 9% (MIMIC) and 13% (AmsterdamUMCdb). In MIMIC, a race/ethnicity of Black (OR, 0.75; 95% CrI, 0.57-0.96) or Asian (OR, 0.6; 95% CrI, 0.35-0.95) compared with White was associated with decreased probability of invasive ventilation after meeting a threshold. Conclusions: The probability of invasive ventilation within 3 hours of meeting physiologic thresholds was low and associated with patient race/ethnicity.

Ketamine sedation in the intensive care unit: a survey of Canadian intensivists.

PURPOSE: We sought to understand the beliefs and practices of Canadian intensivists regarding their use of ketamine as a sedative in critically ill patients and to gauge their interest in a randomized controlled trial (RCT) examining its use in the intensive care unit (ICU). METHODS: We designed and validated an electronic self-administered survey examining the use of ketamine as a sedative infusion for ICU patients. We surveyed 400 physician members of the Canadian Critical Care Society (CCCS) via email between February and April 2022 and sent three reminders at two-week intervals. The survey was redistributed in January 2023 to improve the response rate. RESULTS: We received 87/400 (22%) completed questionnaires. Most respondents reported they rarely use ketamine as a continuous infusion for sedation or analgesia in the ICU (52/87, 58%). Physicians reported the following conditions would make them more likely to use ketamine: asthma exacerbation (73/87, 82%), tolerance to opioids (68/87, 77%), status epilepticus (44/87, 50%), and severe acute respiratory distress syndrome (33/87, 38%). Concern for side-effects that limited respondents' use of ketamine include adverse psychotropic effects (61/87, 69%) and delirium (47/87, 53%). The majority of respondents agreed there is need for an RCT to evaluate ketamine as a sedative infusion in the ICU (62/87, 71%). CONCLUSION: This survey of Canadian intensivists illustrates that use of ketamine as a continuous infusion for sedation is limited, and is at least partly driven by concerns of adverse psychotropic effects. Canadian physicians endorse the need for a trial investigating the safety and efficacy of ketamine as a sedative for critically ill patients.

RéSUMé: OBJECTIF: Nous avons cherché à comprendre les croyances et les pratiques des intensivistes pratiquant au Canada concernant leur utilisation de la kétamine comme sédatif chez la patientèle gravement malade et à évaluer leur intérêt pour une étude randomisée contrôlée (ERC) examinant son utilisation à l'unité de soins intensifs (USI). MéTHODE: Nous avons mis au point et validé un sondage électronique auto-administré examinant l'utilisation de la kétamine comme perfusion sédative pour les patient·es aux soins intensifs. Nous avons envoyé le sondage à 400 médecins membres de la Société canadienne de soins intensifs (SCCC) par courriel entre février et avril 2022 et envoyé trois rappels à intervalles de deux semaines. Le sondage a été redistribué en janvier 2023 afin d'améliorer le taux de réponse. RéSULTATS: Nous avons reçu 87 questionnaires remplis sur 400 (22 %). La plupart des personnes répondantes ont déclaré qu'elles utilisaient rarement la kétamine en perfusion continue pour la sédation ou l'analgésie à l'USI (52/87, 58 %). Les médecins ont déclaré que les conditions suivantes les rendraient plus susceptibles d'utiliser de la kétamine : une exacerbation de l'asthme (73/87, 82 %), une tolérance aux opioïdes (68/87, 77 %), un état de mal épileptique (44/87, 50 %) et un syndrome de détresse respiratoire aigu (33/87, 38 %). Les inquiétudes quant aux effets secondaires qui ont limité l'utilisation de la kétamine par les répondant·es comprennent les effets psychotropes indésirables (61/87, 69 %) et le delirium (47/87, 53 %). La majorité des personnes répondantes étaient d'accord qu'une ERC est nécessaire pour évaluer la kétamine en tant que perfusion sédative à l'USI (62/87, 71 %). CONCLUSION: Cette enquête menée auprès d'intensivistes au Canada montre que l'utilisation de la kétamine comme perfusion continue pour la sédation est limitée, au moins en partie en raison d'inquiétudes liées aux effets psychotropes indésirables. Les médecins pratiquant au Canada reconnaissent la nécessité d'une étude sur l'innocuité et l'efficacité de la kétamine comme sédatif pour la patientèle gravement malade.

Physicians' beliefs and perceived importance of traumatic brain injury-associated agitation in critically ill patients: a survey of Canadian intensivists.

PURPOSE: Agitation is a common behavioural problem following traumatic brain injury (TBI). Intensive care unit (ICU) physicians' perspectives regarding TBI-associated agitation are unknown. Our objective was to describe physicians' beliefs and perceived importance of TBI-associated agitation in critically ill patients. METHODS: Following current standard guidance, we built an electronic, self-administrated, 42-item survey, pretested it for reliability and validity, and distributed it to 219 physicians working in 18 ICU level-1 trauma centres in Canada. We report the results using descriptive statistics. RESULTS: The overall response rate was 93/219 (42%), and 76/93 (82%) respondents completed the full survey. Most respondents were men with ten or more years of experience. Respondents believed that pre-existing dementia (90%) and regular recreational drug use (86%) are risk factors for agitation. Concerning management, 91% believed that the use of physical restraints could worsen agitation, 90% believed that having family at the bedside reduces agitation, and 72% believed that alpha-2 adrenergic agonists are efficacious for managing TBI agitation. Variability was observed in beliefs on epidemiology, sex, gender, age, socioeconomic status, and other pharmacologic options. Respondents considered TBI agitation frequent enough to justify the implementation of management protocols (87%), perceived the current level of clinical evidence on TBI agitation management to be insufficient (84%), and expressed concerns about acute and long-term detrimental outcomes and burden to patients, health care professionals, and relatives (85%). CONCLUSION: Traumatic brain injury-associated agitation in critically ill patients was perceived as an important issue for most ICU physicians. Physicians agreed on multiple approaches to manage TBI-associated agitation although agreement on epidemiology and risk factors was variable.

RéSUMé: OBJECTIF: L'agitation est un problème de comportement courant à la suite d'un traumatisme crânien (TC). Le point de vue des médecins des unités de soins intensifs (USI) sur l'agitation associée aux traumatismes crâniens est inconnu. Notre objectif était de décrire les croyances et l'importance perçue par les médecins de l'agitation associée aux traumatismes crâniens chez les patient·es gravement malades. MéTHODE: Conformément aux lignes directrices standard actuelles, nous avons élaboré un sondage électronique auto-administré de 42 questions, l'avons testé au préalable pour en vérifier la fiabilité et la validité, et l'avons distribué à 219 médecins travaillant dans les USI de 18 centres de traumatologie de niveau 1 au Canada. Les résultats sont présentés à l'aide de statistiques descriptives. RéSULTATS: Le taux de réponse global a été de 93 sur 219 (42 %) et 76 sur 93 (82 %) personnes interrogées ont répondu à l'ensemble du sondage. La plupart des répondant·es étaient des hommes comptant dix ans ou plus d'expérience. Les répondant·es sont d'avis que la démence préexistante (90 %) et la consommation régulière de drogues à des fins récréatives (86 %) sont des facteurs de risque d'agitation. En ce qui concerne la prise en charge, 91 % des répondant·es estiment que l'utilisation de contentions physiques peut aggraver l'agitation, 90 % croient que le fait d'avoir de la famille au chevet du patient ou de la patiente réduit l'agitation et 72 % pensent que les agonistes alpha-2 adrénergiques sont efficaces pour gérer l'agitation causée par les traumatismes crâniens. Une variabilité a été observée dans les croyances concernant l'épidémiologie, le sexe, le genre, l'âge, le statut socio-économique et d'autres options pharmacologiques. Les répondant·es considéraient que l'agitation liée aux traumatismes crâniens était suffisamment fréquente pour justifier la mise en œuvre de protocoles de prise en charge (87 %), estimaient que le niveau actuel de données probantes cliniques sur la prise en charge de l'agitation causée par un traumatisme crânien était insuffisant (84 %), et se sont dit·es préoccupé·es par les conséquences préjudiciables aiguës et à long terme et par le fardeau pour les patient·es, les professionnel·les de la santé et les proches (85 %). CONCLUSION: L'agitation associée à un traumatisme crânien chez les patient·es gravement malades était perçue comme un problème important pour la plupart des médecins des soins intensifs. Les médecins s'entendaient sur plusieurs approches pour gérer l'agitation associée aux traumatismes crâniens, bien que l'accord sur l'épidémiologie et les facteurs de risque était variable.

The association between nutritional risk index and ICU outcomes across hematologic malignancy patients with acute respiratory failure.

Patients with hematological malignancies (HM) are at risk of acute respiratory failure (ARF). Malnutrition, a common association with HM, has the potential to influence ICU outcomes. Geriatric nutritional risk index (G-NRI) is a score derived from albumin and weight, which reflects risk of protein-energy malnutrition. We evaluated the association between G-NRI at ICU admission and ICU mortality in HM patients with ARF. We conducted a single center retrospective study of ventilated HM patients between 2014 and 2018. We calculated G-NRI for all patients using their ICU admission albumin and weight. Our primary outcome was ICU mortality. Secondary outcomes included duration of mechanical ventilation and ICU length of stay. Two hundred eighty patients were admitted to the ICU requiring ventilation. Median age was 62 years (IQR 51-68), 42% (n = 118) were females, and median SOFA score was 11 (IQR 9-14). The most common type of HM was acute leukemia (54%) and 40% underwent hematopoietic cell transplant. Median G-NRI was 87 (IQR 79-99). ICU mortality was 51% (n = 143) with a median duration of ventilation of 4 days (IQR 2-7). Mortality across those at severe malnutrition (NRI < 83.5) was 59% (65/111) compared to 46% (76/164) across those with moderate-no risk (p = 0.047). On multivariable analysis, severe NRI (OR 2.34, 95% CI 1.04-5.27, p = 0.04) was significantly associated with ICU mortality. In this single center, exploratory study, severe G-NRI was prognostic of ICU mortality in HM patients admitted with respiratory failure.

Oxygenation thresholds for invasive ventilation in hypoxemic respiratory failure: a target trial emulation in two cohorts.

BACKGROUND: The optimal thresholds for the initiation of invasive ventilation in patients with hypoxemic respiratory failure are unknown. Using the saturation-to-inspired oxygen ratio (SF), we compared lower versus higher hypoxemia severity thresholds for initiating invasive ventilation. METHODS: This target trial emulation included patients from the Medical Information Mart for Intensive Care (MIMIC-IV, 2008-2019) and the Amsterdam University Medical Centers (AmsterdamUMCdb, 2003-2016) databases admitted to intensive care and receiving inspired oxygen fraction ≥ 0.4 via non-rebreather mask, noninvasive ventilation, or high-flow nasal cannula. We compared the effect of using invasive ventilation initiation thresholds of SF < 110, < 98, and < 88 on 28-day mortality. MIMIC-IV was used for the primary analysis and AmsterdamUMCdb for the secondary analysis. We obtained posterior means and 95% credible intervals (CrI) with nonparametric Bayesian G-computation. RESULTS: We studied 3,357 patients in the primary analysis. For invasive ventilation initiation thresholds SF < 110, SF < 98, and SF < 88, the predicted 28-day probabilities of invasive ventilation were 72%, 47%, and 19%. Predicted 28-day mortality was lowest with threshold SF < 110 (22.2%, CrI 19.2 to 25.0), compared to SF < 98 (absolute risk increase 1.6%, CrI 0.6 to 2.6) or SF < 88 (absolute risk increase 3.5%, CrI 1.4 to 5.4). In the secondary analysis (1,279 patients), the predicted 28-day probability of invasive ventilation was 50% for initiation threshold SF < 110, 28% for SF < 98, and 19% for SF < 88. In contrast with the primary analysis, predicted mortality was highest with threshold SF < 110 (14.6%, CrI 7.7 to 22.3), compared to SF < 98 (absolute risk decrease 0.5%, CrI 0.0 to 0.9) or SF < 88 (absolute risk decrease 1.9%, CrI 0.9 to 2.8). CONCLUSION: Initiating invasive ventilation at lower hypoxemia severity will increase the rate of invasive ventilation, but this can either increase or decrease the expected mortality, with the direction of effect likely depending on baseline mortality risk and clinical context.

Association of early mobility with the incidence of deep-vein thrombosis and mortality among critically ill patients: a post hoc analysis of PREVENT trial.

BACKGROUND: This study assessed the mobility levels among critically ill patients and the association of early mobility with incident proximal lower-limb deep-vein thrombosis and 90-day mortality. METHODS: This was a post hoc analysis of the multicenter PREVENT trial, which evaluated adjunctive intermittent pneumatic compression in critically ill patients receiving pharmacologic thromboprophylaxis with an expected ICU stay ≥ 72 h and found no effect on the primary outcome of incident proximal lower-limb deep-vein thrombosis. Mobility levels were documented daily up to day 28 in the ICU using a tool with an 8-point ordinal scale. We categorized patients according to mobility levels within the first 3 ICU days into three groups: early mobility level 4-7 (at least active standing), 1-3 (passive transfer from bed to chair or active sitting), and 0 (passive range of motion). We evaluated the association of early mobility and incident lower-limb deep-vein thrombosis and 90-day mortality by Cox proportional models adjusting for randomization and other co-variables. RESULTS: Of 1708 patients, only 85 (5.0%) had early mobility level 4-7 and 356 (20.8%) level 1-3, while 1267 (74.2%) had early mobility level 0. Patients with early mobility levels 4-7 and 1-3 had less illness severity, femoral central venous catheters, and organ support compared to patients with mobility level 0. Incident proximal lower-limb deep-vein thrombosis occurred in 1/85 (1.3%) patients in the early mobility 4-7 group, 7/348 (2.0%) patients in mobility 1-3 group, and 50/1230 (4.1%) patients in mobility 0 group. Compared with early mobility group 0, mobility groups 4-7 and 1-3 were not associated with differences in incident proximal lower-limb deep-vein thrombosis (adjusted hazard ratio [aHR] 1.19, 95% confidence interval [CI] 0.16, 8.90; p = 0.87 and 0.91, 95% CI 0.39, 2.12; p = 0.83, respectively). However, early mobility groups 4-7 and 1-3 had lower 90-day mortality (aHR 0.47, 95% CI 0.22, 1.01; p = 0.052, and 0.43, 95% CI 0.30, 0.62; p < 0.0001, respectively). CONCLUSIONS: Only a small proportion of critically ill patients with an expected ICU stay ≥ 72 h were mobilized early. Early mobility was associated with reduced mortality, but not with different incidence of deep-vein thrombosis. This association does not establish causality, and randomized controlled trials are required to assess whether and to what extent this association is modifiable. TRIAL REGISTRATION: The PREVENT trial is registered at ClinicalTrials.gov, ID: NCT02040103 (registered on 3 November 2013) and Current controlled trials, ID: ISRCTN44653506 (registered on 30 October 2013).

Outcomes of COVID-19 manuscripts submitted to the Canadian Journal of Anesthesia: a retrospective audit of author gender and person of colour status.

PURPOSE: We aimed to evaluate the representation of women and persons of colour (POC) authors of COVID-19 manuscripts submitted to, accepted in, and rejected from the Journal and to evaluate trends in their representation during the pandemic. METHODS: All COVID-19 manuscripts submitted to the Journal between 1 February 2020 and 30 April 2021 were included. Manuscript data were retrieved from Editorial Manager, and gender and POC status were obtained through: 1) e-mail communication with corresponding authors; 2) e-mail queries to other coauthors; 3) NamSor software, and 4) Internet searches. The data were described using percentages and summary statistics. A two-sample test of proportions was used for comparisons and trends were analyzed with linear regression. RESULTS: We identified 314 manuscripts (1,555 authors), 95 (461 authors) of which were accepted for publication. Of all authors, 515 (33%) were women, and women were the lead and senior authors of 101 (32%) and 69 (23%) manuscripts, respectively. There were no differences in women's representation as authors between accepted and rejected manuscripts. Overall, 923/1,555 (59%) authors were identified as POC, with a significantly lower proportion of POC authors among accepted vs rejected manuscripts (41%, 188/461 vs 67%, 735/1,094; difference, -26%; 95% CI, -32 to -21; P < 0.001). We did not observe significant trends in the proportion of women and POC authors over the study period. CONCLUSION: The proportion of women authors of COVID-19 manuscripts was lower than men's representation. Further research is required to determine the factors that account for the higher proportion of POC authors across rejected manuscripts.

RéSUMé: OBJECTIF: Nous avions pour objectif d'évaluer la représentation des femmes et des personnes de couleur ayant rédigé des manuscrits portant sur la COVID-19 soumis, acceptés et rejetés au Journal et d'évaluer les tendances concernant leur représentation pendant la pandémie. MéTHODE: Tous les manuscrits portant sur la COVID-19 soumis au Journal entre le 1er février 2020 et le 30 avril 2021 ont été inclus. Les données des manuscrits ont été extraites de la plateforme de gestion des manuscrits Editorial Manager, et le sexe et le statut de personne de couleur ont été obtenus par : 1) la communication par courrier électronique avec les auteurs et autrices correspondant·es; 2) des requêtes par courrier électronique envoyées à d'autres coautrices et coauteurs; 3) le logiciel NamSor, et 4) des recherches sur Internet. Les données ont été décrites à l'aide de pourcentages et de statistiques sommaires. Un test de proportions à deux échantillons a été utilisé pour les comparaisons et les tendances ont été analysées par régression linéaire. RéSULTATS: Nous avons identifié 314 manuscrits (1555 auteurs et autrices), dont 95 (461 autrices et auteurs) ont été acceptés pour publication. Parmi tou·tes les auteurs/autrices, 515 (33 %) étaient des femmes, et les femmes étaient les autrices principales et senior de 101 (32 %) et 69 (23 %) manuscrits, respectivement. Il n'y avait aucune différence dans la représentation des femmes en tant qu'autrices entre les manuscrits acceptés et rejetés. Dans l'ensemble, 923/1555 (59 %) auteurs et autrices ont été identifié·es comme étant des personnes de couleur, avec une proportion significativement plus faible d'autrices et d'auteurs de couleur parmi les manuscrits acceptés vs rejetés (41 %, 188/461 vs 67 %, 735/1094; différence, -26 %; IC 95 %, -32 à -21; P < 0,001). Nous n'avons pas observé de tendances significatives dans la proportion d'auteurs et d'autrices femmes et de couleur au cours de la période à l'étude. CONCLUSION: La proportion de femmes autrices de manuscrits sur la COVID-19 était inférieure à celle des hommes. D'autres recherches sont nécessaires pour déterminer les facteurs qui expliquent la plus grande proportion d'autrices et d'auteurs de couleur parmi les manuscrits rejetés.

Microaggressions in anesthesiology and critical care: individual and institutional approaches to change.

Microaggressions are subtle verbal or nonverbal insults that convey derogatory and negative messages to and about people who belong to oppressed groups. Microaggressions reflect structurally and historically perpetuated societal values, which advantage some groups of people by considering them to be inherently more worthy than others, while simultaneously disadvantaging others. While microaggressions may seem innocuous and are often unintentional, they cause tangible harm. Microaggressions are commonly experienced by physicians and learners working in perioperative and critical care contexts and are often not adequately addressed, for a multitude of reasons, including witnesses not knowing how to respond. In this narrative review, we provide examples of microaggressions towards physicians and learners working in anesthesia and critical care, and offer individual and institutional approaches to managing such incidents. Concepts of privilege and power are introduced to ground interpersonal interventions within the larger context of systemic discrimination, and to encourage anesthesia and critical care physicians to contribute to systemic solutions.

RéSUMé: Les microagressions sont des insultes subtiles verbales ou non verbales qui transmettent des messages désobligeants et négatifs aux personnes qui appartiennent à des groupes opprimés ou à leur sujet. Les microagressions reflètent des valeurs sociétales qui se perpétuent de manière structurelle et historique, et qui profitent à certains groupes de personnes en les considérant comme intrinsèquement plus dignes que d'autres, tout en désavantageant les autres. Bien que les microagressions puissent sembler inoffensives et soient souvent involontaires, elles causent des dommages tangibles. Les microagressions sont couramment vécues par les médecins et les stagiaires travaillant dans des contextes périopératoires et de soins intensifs et ne sont souvent pas traitées adéquatement, pour une multitude de raisons, y compris le fait que les personnes qui en sont témoins ne savent pas comment réagir. Dans ce compte rendu narratif, nous fournissons des exemples de microagressions envers les médecins et les stagiaires travaillant en anesthésie et en soins intensifs, et proposons des approches individuelles et institutionnelles pour gérer de tels incidents. Les concepts de privilège et de pouvoir sont introduits pour ancrer les interventions interpersonnelles dans le contexte plus large de la discrimination systémique et pour encourager les anesthésiologistes et les intensivistes à contribuer à apporter des solutions systémiques.

A qualitative descriptive study of the impact of the COVID-19 pandemic on staff in a Canadian intensive care unit.

PURPOSE: We sought to explore the lived experiences of a professionally diverse sample of healthcare workers (HCWs) in a single intensive care unit (ICU) serving a large and generalizable Canadian population. We aimed to understand how working during the COVID-19 pandemic affected their professional and personal lives, including their perceptions of institutional support, to inform interventions to ameliorate impacts of the COVID-19 and future pandemics. METHODS: In this qualitative descriptive study, 23 ICU HCWs, identified using convenience purposive sampling, took part in individual semistructured interviews between July and November 2020, shortly after the first wave of the pandemic in Ontario. We used inductive thematic analysis to identify major themes. RESULTS: We identified five major themes related to the COVID-19 pandemic: 1) communication and informational needs (e.g., challenges communicating policy changes); 2) adjusting to restricted visitation (e.g., spending less time interacting with patients); 3) staffing and workplace supports (e.g., importance of positive team dynamics); 4) permeability of professional and personal lives (e.g., balancing shift work and childcare); and 5) a dynamic COVID-19 landscape (e.g., coping with constant change). The COVID-19 pandemic contributed to HCWs in the ICU experiencing varied negative repercussions on their work environment, including staffing and institutional support, which carried into their personal lives. CONCLUSION: Healthcare workers in the ICU perceived that the COVID-19 pandemic had negative repercussions on their work environment, including staffing and institutional support, as well as their professional and personal lives. Understanding both the negative and positive experiences of all ICU HCWs working during the COVID-19 pandemic is critical to future pandemic preparedness. Their perspectives will help to inform the development of mental health and wellbeing interventions to support staff during the COVID-19 pandemic and beyond.

RéSUMé: OBJECTIF: Nous avons cherché à explorer les expériences vécues par un échantillon varié de travailleurs de la santé (TS) dans une seule unité de soins intensifs (USI) desservant une population canadienne vaste et généralisable. Notre objectif était de comprendre comment le travail pendant la pandémie de COVID-19 a affecté leur vie professionnelle et personnelle, y compris leurs perceptions du soutien institutionnel, afin d'éclairer les interventions visant à atténuer les impacts de la COVID-19 et des pandémies futures. MéTHODE: Dans cette étude qualitative descriptive, 23 travailleurs de la santé en soins intensifs, identifiés à l'aide d'un échantillonnage raisonné de commodité, ont participé à des entrevues individuelles semi-structurées entre juillet et novembre 2020, peu après la première vague de la pandémie en Ontario. Nous avons utilisé l'analyse thématique inductive pour identifier les principaux thèmes. RéSULTATS: Nous avons cerné cinq grands thèmes liés à la pandémie de COVID-19 : 1) les besoins en matière de communication et d'information (p. ex., les difficultés à communiquer les changements de politiques); 2) l'adaptation aux visites restreintes (p. ex., le fait de passer moins de temps à interagir avec les patients); 3) le soutien à la dotation en personnel et au milieu de travail (p. ex., l'importance d'une dynamique d'équipe positive); 4) la perméabilité de la vie professionnelle et personnelle (p. ex., l'équilibre entre le travail en quarts et la garde des enfants); et 5) le paysage dynamique de la COVID-19 (p. ex., l'adaptation à des changements constants). La pandémie de COVID-19 a contribué à ce que les travailleurs de la santé de l'USI subissent divers impacts négatifs sur leur environnement de travail, y compris sur la dotation en personnel et le soutien institutionnel, qui se sont répercutés sur leur vie personnelle. CONCLUSION: Les travailleurs de la santé de l'USI ont perçu que la pandémie de COVID-19 avait eu des répercussions négatives sur leur environnement de travail, y compris sur la dotation en personnel et le soutien institutionnel, ainsi que sur leur vie professionnelle et personnelle. Il est essentiel de comprendre les expériences négatives et positives de tous les travailleurs de la santé des soins intensifs travaillant pendant la pandémie de COVID-19 pour bien se préparer aux pandémies futures. Leurs points de vue aideront à l'élaboration d'interventions en santé mentale et en bien-être pour soutenir le personnel pendant la pandémie de COVID-19 et au-delà.

Addressing health care inequities in Canadian critical care through inclusive science: a pilot tool for standardized data collection.

PURPOSE: Sociodemographic risks contributing to health inequities are often inadequately captured and reported in critical care studies. To address the lack of standardized terms and definitions, we sought to develop a practical and convenient resource of questions and response options for collecting sociodemographic variables for critical care research. SOURCE: To identify domains and variables that impact health equity, we searched: 1) PubMed for critical care randomized trials (2010 to 2021); 2) high-impact critical care and general medicine journals for special issues relating to equity; and 3) governmental and nongovernmental resources. PRINCIPAL FINDINGS: We identified 23 domains associated with health equity, including pronouns, age, sex, gender identity, sexual orientation, race and ethnicity, visible minorities, language, household income, marital/relationship status, education, disabilities, immigrant and refugee status, employment, primary care access, expanded health insurance, internet access, housing security, food security, dependents, religion, and postal code. For each domain we provided standardized questions and response options; for 13/23 domains, we included more than one version of the question and response categories. CONCLUSION: We developed a standardized, practical, and convenient demographic data collection tool for critical care research studies. Questions and response options can be adapted by researchers for inclusion in individual study questionnaires or case report forms.

RéSUMé: OBJECTIF: Les risques sociodémographiques qui contribuent aux inégalités en matière de santé sont souvent mal saisis et rapportés dans les études de soins intensifs. Pour remédier au manque de termes et de définitions normalisés, nous avons cherché à élaborer une ressource à la fois pratique et utile de questions et d'options de réponse pour le recueil des variables sociodémographiques pour la recherche en soins intensifs. SOURCES: Pour identifier les domaines et les variables qui ont une incidence sur l'équité en santé, nous avons effectué des recherches dans : 1) PubMed, pour en extraire les études randomisées en soins intensifs (2010 à 2021); 2) des revues de soins intensifs et de médecine générale à impact élevé pour identifier les numéros spéciaux liés à l'équité; et 3) les ressources gouvernementales et non gouvernementales. CONSTATATIONS PRINCIPALES: Nous avons identifié 23 domaines associés à l'équité en santé, y compris les pronoms, l'âge, le sexe, l'identité de genre, l'orientation sexuelle, la race et l'origine ethnique, les minorités visibles, la langue, le revenu du ménage, l'état matrimonial / relationnel, l'éducation, les handicaps, le statut d'immigrant·e et de réfugié·e, l'emploi, l'accès aux soins primaires, l'assurance maladie élargie, l'accès à l'internet, la sécurité du logement, la sécurité alimentaire, les personnes à charge, la religion et le code postal. Pour chaque domaine, nous avons fourni des questions et des options de réponse normalisées; pour 13/23 domaines, nous avons inclus plus d'une version des catégories de questions et réponses. CONCLUSION: Nous avons mis au point un outil de collecte de données démographiques normalisé, pratique et utile pour la recherche en soins intensifs. Les options de questions et de réponses peuvent être adaptées par les chercheuses et chercheurs pour être incluses dans des questionnaires d'étude individuels ou des formulaires de présentation de cas.

Resuscitation outcomes in patients with cancer: experience in a large urban cancer centre.

PURPOSE: Hospitalized patients with cancer who experience cardiopulmonary arrest have historically low survival rates. This retrospective cohort study describes outcomes of patients at a large Canadian cancer centre who had a "code medical emergency" activated, and the use of pragmatic criteria to identify patients with poor survival following resuscitation. METHODS: We included hospitalized patients with cancer who had a "code blue" activated between January 2007 and December 2018. Our primary outcome was intensive care unit (ICU) mortality. We developed pragmatic criteria to identify patients with "poor prognosis" for survival from cardiopulmonary resuscitation (CPR) based on disease status and candidacy for further cancer treatment. We used descriptive statistics to analyze the outcomes of poor prognosis patients. RESULTS: Two hundred and twenty-five patients had a code blue activated. The median age was 61 yr, 52% were male, and 48% had a solid tumour. Overall, 173/225 (77%) patients survived the code blue; 164 were admitted to the ICU, where 49% (81/164) died; 31% survived to hospital discharge; and 16% (n = 27) were alive at one year. One hundred and twenty out of 225 (53%) required chest compressions; spontaneous circulation returned in 61% (73/120), and 12% (14/120) survived to hospital discharge. Patients meeting "poor prognosis" criteria (114, 51%) were more likely to die in the ICU (64% vs 35%; P < 0.001) or in hospital (86% vs 59%; P < 0.001), and more often had goals-of-care discussions prior to the code blue (46% vs 7%; P < 0.001). At one year, only 2% of poor prognosis patients were alive, compared with 24% of patients who did not meet any poor prognosis criteria. CONCLUSION: Hospitalized patients with cancer requiring CPR have poor hospital and long-term outcomes. The proposed set of pragmatic criteria may be useful to identify patients unlikely to benefit from CPR and life support, to trigger early goals of care discussions, and to avoid potentially goal-discordant interventions.

RéSUMé: OBJECTIF: Les patient·es hospitalisé·es atteint·es d'un cancer qui subissent un arrêt cardiorespiratoire ont des taux de survie historiquement bas. Cette étude de cohorte rétrospective décrit les issues des patient·es d'un grand centre canadien de cancérologie pour qui un « code d'urgence médicale ¼ a été activé et l'utilisation de critères pragmatiques pour identifier les patient·es ayant une faible survie après réanimation. MéTHODE: Nous avons inclus les personnes hospitalisées atteintes d'un cancer pour qui un « code bleu ¼ avait été activé entre janvier 2007 et décembre 2018. Notre critère d'évaluation principal était la mortalité à l'unité de soins intensifs (USI). Nous avons développé des critères pragmatiques pour identifier les personnes ayant un « mauvais pronostic ¼ de survie à la réanimation cardiorespiratoire (RCR) en fonction de l'état de la maladie et de leur éligibilité à un traitement ultérieur contre le cancer. Nous avons utilisé des statistiques descriptives pour analyser les issues des patient·es ayant un mauvais pronostic. RéSULTATS: Un code bleu a été activé pour deux cent vingt-cinq patient·es. L'âge médian était de 61 ans, 52 % étaient des hommes et 48 % avaient une tumeur solide. Dans l'ensemble, 173/225 (77 %) patient·es ont survécu au code bleu; 164 ont été admis·es aux soins intensifs, où 49 % (81/164) sont décédé·es; 31 % ont survécu jusqu'à leur congé de l'hôpital; et 16 % (n = 27) étaient en vie après un an. Cent vingt sur 225 (53 %) ont nécessité des compressions thoraciques; la circulation spontanée est revenue chez 61 % (73/120), et 12 % (14/120) ont survécu jusqu'à leur congé de l'hôpital. Les patient·es répondant aux critères de « mauvais pronostic ¼ (114, 51 %) étaient plus susceptibles de mourir à l'USI (64 % vs 35 %; P < 0,001) ou à l'hôpital (86 % vs 59 %; P < 0,001) et avaient plus souvent eu des discussions sur les objectifs de soins avant l'activation du code bleu (46 % vs 7 %; P < 0,001). À un an, seulement 2 % des patient·es ayant un mauvais pronostic étaient en vie, contre 24 % des patient·es qui ne présentaient aucun critère de mauvais pronostic. CONCLUSION: Les personnes hospitalisées atteintes d'un cancer nécessitant une RCR ont de mauvaises issues intra-hospitalières et à plus long terme. L'ensemble de critères pragmatiques proposé peut être utile pour identifier la patientèle peu susceptible de bénéficier de la RCR et du maintien des fonctions vitales, pour amorcer rapidement des discussions sur les objectifs de soins et pour éviter les interventions potentiellement discordantes par rapport à ces objectifs.

Outcomes of critically ill older adults with COVID-19: a multicentre retrospective cohort study.

PURPOSE: Older adults with COVID-19 have a high prevalence of complications and mortality during hospitalization. Given the large proportion of older adults requiring admission to an intensive care unit (ICU), we aimed to describe the management and outcomes of older adults with COVID-19 requiring ICU care and identify predictors of hospital mortality. METHODS: We included consecutive patients ≥ 65 yr of age who were admitted between 11 March 2020 and 30 June 2021 to one of five Toronto (ON, Canada) ICUs with a primary diagnosis of SARS-CoV-2 infection in a retrospective cohort study. Patient characteristics, ICU treatment, and outcomes were recorded. We used multivariable logistic regression to identify predictors of in-hospital mortality. RESULTS: Of the 273 patients, the median [interquartile range] age was 74 [69-80] yr, 104 (38.1%) were female, and 164 (60.1%) required invasive mechanical ventilation. One hundred and forty-two patients (52.0%) survived their hospital stay. Compared with survivors, nonsurvivors were older (74 [70-82] yr vs 73 [68-78] yr; P = 0.03), and a smaller proportion was female (39/131, 29.8% vs 65/142, 45.8%; P = 0.01). Patients had long hospital (19 [11-35] days) and ICU (9 [5-22] days) stays, with no significant differences in ICU length of stay or duration of invasive mechanical ventilation between the two groups. Higher APACHE II score, increasing age, and the need for organ support were independently associated with higher in-hospital mortality while female sex was associated with lower mortality. CONCLUSIONS: Older critically ill COVID-19 patients had long ICU and hospital stays, and approximately half died in hospital. Further research is needed to identify individuals who will benefit most from an ICU admission and to evaluate posthospitalization outcomes.

RéSUMé: OBJECTIF: Les personnes âgées atteintes de la COVID-19 ont une prévalence élevée de complications et de mortalité pendant l'hospitalisation. Compte tenu de la forte proportion de personnes âgées nécessitant une admission dans une unité de soins intensifs (USI), nous avons cherché à décrire la prise en charge et les devenirs des personnes âgées atteintes de COVID-19 nécessitant des soins intensifs et à identifier les prédicteurs de mortalité hospitalière. MéTHODE: Nous avons inclus des patient·es consécutif·ves âgé·es de ≥ 65 ans admis·es entre le 11 mars 2020 et le 30 juin 2021 dans l'une des cinq unités de soins intensifs de Toronto (ON, Canada) avec un diagnostic primaire d'infection par le SRAS-CoV-2 dans une étude de cohorte rétrospective. Les caractéristiques des patient·es, le traitement en USI et les devenirs ont été enregistrés. Nous avons utilisé une régression logistique multivariable pour identifier les prédicteurs de mortalité hospitalière. RéSULTATS: Parmi les 273 patient·es, l'âge médian [écart interquartile] était de 74 [69-80] ans, 104 (38,1 %) étaient des femmes et 164 (60,1 %) ont nécessité une ventilation mécanique invasive. Cent quarante-deux personnes (52,0 %) ont survécu à leur séjour à l'hôpital. Comparativement aux personnes survivantes, les personnes qui n'ont pas survécu étaient plus âgées (74 [70-82] ans vs 73 [68­78] ans; P = 0,03), et une plus faible proportion était de sexe féminin (39/131, 29,8 % vs 65/142, 45,8 %; P = 0,01). Les séjours des patient·es à l'hôpital (19 [11-35] jours) et à l'USI (9 [5-22] jours) étaient longs, sans différence significative dans la durée du séjour en USI ou la durée de la ventilation mécanique invasive entre les deux groupes. Un score APACHE II plus élevé, un âge plus avancé et le besoin de mesures de soutien d'organes étaient indépendamment associés à une mortalité plus élevée à l'hôpital, tandis que le sexe féminin était associé à une mortalité plus faible. CONCLUSION : Les personnes plus âgées gravement malades atteintes de la COVID-19 ont eu de longs séjours en soins intensifs et à l'hôpital, et environ la moitié sont décédées à l'hôpital. D'autres recherches sont nécessaires pour identifier les personnes qui bénéficieraient le plus d'une admission à l'USI et pour évaluer les devenirs post-hospitalisation.

Sex differences in thromboprophylaxis of the critically ill: a secondary analysis of a randomized trial.

PURPOSE: Venous thromboembolism (VTE) is a common complication of critical illness. Sex- or gender-based analyses are rarely conducted and their effect on outcomes is unknown. We assessed for an effect modification of thromboprophylaxis (dalteparin or unfractionated heparin [UFH]) by sex on thrombotic (deep venous thrombosis [DVT], pulmonary embolism [PE], VTE) and mortality outcomes in a secondary analysis of the Prophylaxis for Thromboembolism in Critical Care Trial (PROTECT). METHODS: We conducted unadjusted analyses using Cox proportional hazards analysis, stratified by centre and admission diagnostic category, including sex, treatment, and an interaction term. Additionally, we performed adjusted analyses and assessed the credibility of our findings. RESULTS: Critically ill female (n = 1,614) and male (n = 2,113) participants experienced similar rates of DVT, proximal DVT, PE, any VTE, ICU death, and hospital death. In unadjusted analyses, we did not find significant differences in treatment effect favouring males (vs females) treated with dalteparin (vs UFH) for proximal leg DVT, any DVT, or any PE, but found a statistically significant effect (moderate certainty) favouring dalteparin in males for any VTE (males: hazard ratio [HR], 0.71; 95% confidence interval [CI], 0.52 to 0.96 vs females: HR, 1.16; 95% CI, 0.81 to 1.68; P = 0.04). This effect remained after adjustment for baseline characteristics (males: HR, 0.70; 95% CI, 0.52 to 0.96 vs females: HR, 1.17; 95% CI, 0.81 to 1.68; P = 0.04) and weight (males: HR, 0.70; 95% CI, 0.52 to 0.96 vs females: HR, 1.20; 95% CI, 0.83 to 1.73; P = 0.03). We did not identify a significant effect modification by sex on mortality. CONCLUSIONS: We found an effect modification by sex of thromboprophylaxis on VTE in critically ill patients that requires confirmation. Our findings highlight the need for sex- and gender-based analyses in acute care research.

RéSUMé: OBJECTIF: La maladie thromboembolique veineuse (MTEV) est une complication fréquente au cours des maladies critiques. Des analyses basées sur le sexe ou le genre sont rarement effectuées et leur effet sur les critères d'évaluation est inconnu. Nous avons évalué une modification de l'effet de la thromboprophylaxie (daltéparine ou héparine non fractionnée [HNF]) selon le sexe sur la maladie thrombotique (thrombose veineuse profonde [TVP], embolie pulmonaire [EP], MTEV) et sur les critères de mortalité au cours d'une analyse secondaire de l'étude PROTECT (essai de prophylaxie de la thromboembolie en soins critiques). MéTHODE: Nous avons réalisé des analyses non ajustées au moyen d'une analyse des risques proportionnels de Cox, stratifiées par site et catégorie diagnostique à l'admission, incluant le sexe, le traitement et un terme d'interaction. Nous avons aussi réalisé des analyses ajustées et avons évalué la crédibilité de nos constatations. RéSULTATS: Les participant·es dans un état critique de sexe féminin (n = 1 614) et masculin (n = 2 113) ont présenté des taux semblables de TVP, EP, et MTEV de tout type, de décès en soins intensifs et de décès en milieu hospitalier. Nous n'avons pas trouvé de différences significatives dans les analyses non ajustées en faveur des hommes (par rapport aux femmes) traités par la daltéparine (par rapport à l'HNF) pour la TVP de la cuisse, la TVP de tout type, ou tout type d'EP; en revanche, nous avons trouvé un effet statistiquement significatif (certitude modérée) en faveur de la daltéparine pour la MTEV de tout type (hommes : rapport de risque [RR], 0,71; intervalle de confiance [IC] à 95 %, 0,52 à 0,96 par rapport aux femmes : RR, 1,16; IC 95 %, 0,81 à 1,68; P = 0,04). Cet effet a persisté après ajustement pour les caractéristiques à l'inclusion (hommes : RR, 0,70; IC 95 %, 0,52 à 0,96 par rapport aux femmes : RR, 1,17; IC 95 %, 0,81 à 1,68; P = 0,04) et le poids (hommes : RR, 0,70; IC 95 %, 0,52 à 0,96 par rapport aux femmes : RR, 1,20; IC 95 %, 0,83 à 1,73; P = 0,03). Nous n'avons pas identifié de modification significative de l'effet en fonction du sexe sur la mortalité. CONCLUSION: Nous avons trouvé une modification de l'effet en fonction du sexe sur la thromboprophylaxie sur la MTEV chez les patient·es en état critique; cette constatation nécessite une confirmation. Nos constatations soulignent le besoin d'analyses en fonction du sexe et du genre dans la recherche sur les soins aigus.

Physical restraint practices in an adult intensive care unit: A prospective observational study.

AIM AND OBJECTIVES: To conduct a diagnostic evaluation of physical restraint practice using the integrated-Promoting Action on Research Implementation in Health Services (i-PARIHS) framework. BACKGROUND: Evidence indicates that physical restraints are associated with adverse physical, emotional and psychological sequelae and do not consistently prevent intensive care unit (ICU) patient-initiated device removal. Nevertheless, physical restraints continue to be used extensively in ICUs both in Canada and internationally. Implementation science frameworks have not been previously used to diagnose, develop and guide the implementation of restraint minimisation interventions. DESIGN: A prospective observational study of restrained patients in a 20-bed, academic ICU in Toronto, Canada. METHODS: Data collection methods included patient observation, electronic medical record review, and verbal check with the point-of-care nurses. Data were collected pertaining to framework domains of unit culture (restraint application/removal), evaluation capacity (documentation) and leadership (rounds discussion). The reporting of this study followed the STROBE guidelines. RESULTS: A total of 102 restrained patients, 67 (66%) male and mean age 58 years (SD 1.92), were observed. All observed devices were wrist restraints. Restraint application and removal time was verified in 83 and 57 of 102 patients respectively. At application, 96.4% were mechanically ventilated and 71% sedated/unarousable. Nurses confirmed 71% were prophylactically restrained; 7.2% received restraint alternatives. Restraint removal occurred after interprofessional team rounds (87%), during daytime (79%) and following extubation (52.6%). Of the 923 discrete patient observation of physical restraint use, 691 (75%) were not documented. Of the 30 daytime interprofessional team rounds reviewed, physical restraint was discussed at 3 (10%). CONCLUSION: In this single-centre study, a culture of prophylactic physical restraint was observed. Future facilitation of restraint minimisation warrants theoretically informed implementation strategies including leadership involvement to advance interprofessional collaboration. RELEVANCE TO CLINICAL PRACTICE: The findings draw attention to the importance of a preliminary diagnostic study of the context prior to designing, and implementing, a physical restraint minimisation intervention.

Adjunctive Intermittent Pneumatic Compression for Venous Thromboprophylaxis.

BACKGROUND: Whether adjunctive intermittent pneumatic compression in critically ill patients receiving pharmacologic thromboprophylaxis would result in a lower incidence of deep-vein thrombosis than pharmacologic thromboprophylaxis alone is uncertain. METHODS: We randomly assigned patients who were considered adults according to the local standards at the participating sites (≥14, ≥16, or ≥18 years of age) within 48 hours after admission to an intensive care unit (ICU) to receive either intermittent pneumatic compression for at least 18 hours each day in addition to pharmacologic thromboprophylaxis with unfractionated or low-molecular-weight heparin (pneumatic compression group) or pharmacologic thromboprophylaxis alone (control group). The primary outcome was incident (i.e., new) proximal lower-limb deep-vein thrombosis, as detected on twice-weekly lower-limb ultrasonography after the third calendar day since randomization until ICU discharge, death, attainment of full mobility, or trial day 28, whichever occurred first. RESULTS: A total of 2003 patients underwent randomization - 991 were assigned to the pneumatic compression group and 1012 to the control group. Intermittent pneumatic compression was applied for a median of 22 hours (interquartile range, 21 to 23) daily for a median of 7 days (interquartile range, 4 to 13). The primary outcome occurred in 37 of 957 patients (3.9%) in the pneumatic compression group and in 41 of 985 patients (4.2%) in the control group (relative risk, 0.93; 95% confidence interval [CI], 0.60 to 1.44; P = 0.74). Venous thromboembolism (pulmonary embolism or any lower-limb deep-vein thrombosis) occurred in 103 of 991 patients (10.4%) in the pneumatic compression group and in 95 of 1012 patients (9.4%) in the control group (relative risk, 1.11; 95% CI, 0.85 to 1.44), and death from any cause at 90 days occurred in 258 of 990 patients (26.1%) and 270 of 1011 patients (26.7%), respectively (relative risk, 0.98; 95% CI, 0.84 to 1.13). CONCLUSIONS: Among critically ill patients who were receiving pharmacologic thromboprophylaxis, adjunctive intermittent pneumatic compression did not result in a significantly lower incidence of proximal lower-limb deep-vein thrombosis than pharmacologic thromboprophylaxis alone. (Funded by King Abdulaziz City for Science and Technology and King Abdullah International Medical Research Center; PREVENT ClinicalTrials.gov number, NCT02040103; Current Controlled Trials number, ISRCTN44653506.).

Diversity of Authors of Publications From the Canadian Critical Care Trials Group.

OBJECTIVES: Diverse perspectives improve the quality of scholarly initiatives. The demographic and professional diversity of scientists who contribute to critical care research and publications has not been described for the Canadian Critical Care Trials Group. Our objective was to describe the diversity of authors of publications from the Canadian Critical Care Trials Group. DESIGN: We conducted a quantitative content analysis of peer-reviewed articles published on behalf of the Canadian Critical Care Trials Group. SETTING: All peer-reviewed articles that were published on behalf of the Canadian Critical Care Trials Group between 1994 and October 2020. SUBJECTS: For each publication, we recorded the study design, the number of authors, and national or international collaboration. For the lead author, the senior author, and each coauthor, we recorded the following facets of diversity: gender, professional role, medical discipline, geographic location, academic stage, and visible minority status. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: We identified 354 eligible publications; 74% (263/354) reported observational cohort studies, randomized trials, and surveys. Of 4,246 authors, 1,205 were unique individuals. The mean (sd) number of authors per publication was 12 (7.1). Of all 4,246 authors, 37% were women, and 13.7% were members of a visible minority group. Of all lead or senior authors, 40% and 34% respectively were women; 15% of lead and 10% of senior authors were members of a visible minority group. Three-quarters (73%) of publications listed authors from more than one profession, and more than half (54%) listed authors from more than one medical discipline. Nearly half of publications (45%) listed authors who were early career faculty, 33% listed authors who were trainees, and 67% listed authors who were from visible minority groups. Authors from different provinces and from different countries were listed in 67% and 40% of publications, respectively. CONCLUSIONS: Authors of Canadian Critical Care Trials Group publications are diverse with regard to demographic and professional characteristics.

Wellness and Coping of Physicians Who Worked in ICUs During the Pandemic: A Multicenter Cross-Sectional North American Survey.

OBJECTIVES: Few surveys have focused on physician moral distress, burnout, and professional fulfilment. We assessed physician wellness and coping during the COVID-19 pandemic. DESIGN: Cross-sectional survey using four validated instruments. SETTING: Sixty-two sites in Canada and the United States. SUBJECTS: Attending physicians (adult, pediatric; intensivist, nonintensivist) who worked in North American ICUs. INTERVENTION: None. MEASUREMENTS AND MAIN RESULTS: We analysed 431 questionnaires (43.3% response rate) from 25 states and eight provinces. Respondents were predominantly male (229 [55.6%]) and in practice for 11.8 ± 9.8 years. Compared with prepandemic, respondents reported significant intrapandemic increases in days worked/mo, ICU bed occupancy, and self-reported moral distress (240 [56.9%]) and burnout (259 [63.8%]). Of the 10 top-ranked items that incited moral distress, most pertained to regulatory/organizational ( n = 6) or local/institutional ( n = 2) issues or both ( n = 2). Average moral distress (95.6 ± 66.9), professional fulfilment (6.5 ± 2.1), and burnout scores (3.6 ± 2.0) were moderate with 227 physicians (54.6%) meeting burnout criteria. A significant dose-response existed between COVID-19 patient volume and moral distress scores. Physicians who worked more days/mo and more scheduled in-house nightshifts, especially combined with more unscheduled in-house nightshifts, experienced significantly more moral distress. One in five physicians used at least one maladaptive coping strategy. We identified four coping profiles (active/social, avoidant, mixed/ambivalent, infrequent) that were associated with significant differences across all wellness measures. CONCLUSIONS: Despite moderate intrapandemic moral distress and burnout, physicians experienced moderate professional fulfilment. However, one in five physicians used at least one maladaptive coping strategy. We highlight potentially modifiable factors at individual, institutional, and regulatory levels to enhance physician wellness.