Stress Ulcer Prophylaxis during Invasive Mechanical Ventilation.

BACKGROUND: Whether proton-pump inhibitors are beneficial or harmful for stress ulcer prophylaxis in critically ill patients undergoing invasive ventilation is unclear. METHODS: In this international, randomized trial, we assigned critically ill adults who were undergoing invasive ventilation to receive intravenous pantoprazole (at a dose of 40 mg daily) or matching placebo. The primary efficacy outcome was clinically important upper gastrointestinal bleeding in the intensive care unit (ICU) at 90 days, and the primary safety outcome was death from any cause at 90 days. Multiplicity-adjusted secondary outcomes included ventilator-associated pneumonia, Clostridioides difficile infection, and patient-important bleeding. RESULTS: A total of 4821 patients underwent randomization in 68 ICUs. Clinically important upper gastrointestinal bleeding occurred in 25 of 2385 patients (1.0%) receiving pantoprazole and in 84 of 2377 patients (3.5%) receiving placebo (hazard ratio, 0.30; 95% confidence interval [CI], 0.19 to 0.47; P<0.001). At 90 days, death was reported in 696 of 2390 patients (29.1%) in the pantoprazole group and in 734 of 2379 patients (30.9%) in the placebo group (hazard ratio, 0.94; 95% CI, 0.85 to 1.04; P = 0.25). Patient-important bleeding was reduced with pantoprazole; all other secondary outcomes were similar in the two groups. CONCLUSIONS: Among patients undergoing invasive ventilation, pantoprazole resulted in a significantly lower risk of clinically important upper gastrointestinal bleeding than placebo, with no significant effect on mortality. (Funded by the Canadian Institutes of Health Research and others; REVISE ClinicalTrials.gov number, NCT03374800.).

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.).

Incidence and risk factors of chronic postoperative pain in same-day surgery: A prospective cohort study.

BACKGROUND: The amount of same-day surgery has increased markedly worldwide in recent decades, but there remains limited evidence on chronic postsurgical pain in this setting. METHODS: We assessed pain 90 days after ambulatory surgery in an international, multicentre prospective cohort study of patients ≥45 years old with comorbidities or ≥65 years old. Pain was assessed using the Brief Pain Inventory. Chronic postsurgical pain was defined as a change ≥1 in self-rated average pain at the surgical site between baseline and 90 days, and moderate to severe chronic postsurgical pain as a score ≥4 in self-rated average pain at the surgical site at 90 days. Risk factors for chronic postsurgical pain were identified using multivariable logistic regression. RESULTS: Between November 2021 and January 2023, a total of 2054 participants were included, and chronic postsurgical pain occurred in 12% of participants, of whom 93.1% had new chronic pain at the surgical site (i.e., participants without pain prior to surgery). Moderate to severe chronic postsurgical pain occurred in 9% of overall participants. Factors associated with chronic postsurgical pain were: active smoking (OR 1.82; 95% CI 1.20 to 2.76), orthopaedic surgery (OR 4.7; 95% CI 2.24 to 9.7), plastic surgery (OR 4.3; 95% CI 1.97 to 9.2), breast surgery (OR 2.74; 95% CI 1.29 to 5.8), vascular surgery (OR 2.71; 95% CI 1.09 to 6.7), and ethnicity (i.e., Hispanic/Latino ethnicity OR 3.41; 95% CI 1.68 to 6.9 and First Nations/Native persons OR 4.0; 95% CI 1.05 to 15.4). CONCLUSIONS: Persistent postsurgical pain after same-day surgery is common, usually moderate to severe in nature, and occurs mostly in patients without chronic pain prior to surgery.

Effect of perioperative benzodiazepine use on intraoperative awareness and postoperative delirium: a systematic review and meta-analysis of randomised controlled trials and observational studies.

BACKGROUND: Benzodiazepine use is associated with delirium, and guidelines recommend avoiding them in older and critically ill patients. Their perioperative use remains common because of perceived benefits. METHODS: We searched CENTRAL, MEDLINE, CINAHL, PsycInfo, and Web of Science from inception to June 2021. Pairs of reviewers identified randomised controlled trials and prospective observational studies comparing perioperative use of benzodiazepines with other agents or placebo in patients undergoing surgery. Two reviewers independently abstracted data, which we combined using a random-effects model. Our primary outcomes were delirium, intraoperative awareness, and mortality. RESULTS: We included 34 randomised controlled trials (n=4354) and nine observational studies (n=3309). Observational studies were considered separately. Perioperative benzodiazepines did not increase the risk of delirium (n=1352; risk ratio [RR] 1.43; 95% confidence interval [CI]: 0.9-2.27; I2=72%; P=0.13; very low-quality evidence). Use of benzodiazepines instead of dexmedetomidine did, however, increase the risk of delirium (five studies; n=429; RR 1.83; 95% CI: 1.24-2.72; I2=13%; P=0.002). Perioperative benzodiazepine use decreased the risk of intraoperative awareness (n=2245; RR 0.26; 95% CI: 0.12-0.58; I2=35%; P=0.001; very low-quality evidence). When considering non-events, perioperative benzodiazepine use increased the probability of not having intraoperative awareness (RR 1.07; 95% CI: 1.01-1.13; I2=98%; P=0.03; very low-quality evidence). Mortality was reported by one randomised controlled trial (n=800; RR 0.90; 95% CI: 0.20-3.1; P=0.80; very low quality). CONCLUSIONS: In this systematic review and meta-analysis, perioperative benzodiazepine use did not increase postoperative delirium and decreased intraoperative awareness. Previously observed relationships of benzodiazepine use with delirium could be explained by comparisons with dexmedetomidine. SYSTEMATIC REVIEW PROTOCOL: PROSPERO CRD42019128144.

Functional recovery with peripheral nerve block versus general anesthesia for upper limb surgery: a systematic review.

BACKGROUND: Peripheral nerve block is a common anesthetic technique used during orthopedic upper limb surgery. Injection of local anesthetics around the target nerve inhibits the action of voltage-dependent sodium channels, inhibiting neurotransmission of pain impulses and providing motor immobility. Compared to general anesthesia, it could improve functional recovery by inhibiting nociceptive impulses and inflammation, thus reducing postoperative pain and immobilization and improving postoperative rehabilitation. This systematic review evaluates the impact of peripheral nerve block versus general anesthesia on postoperative functional recovery following orthopedic upper limb surgery. METHODS: We searched CENTRAL, MEDLINE, CINHAL, EMBASE, and Scopus trial databases from inception until September 2021 for studies comparing peripheral nerve block to general anesthesia. We collected data on functional recovery, range of motion, patient satisfaction, quality of life, and return to work. We pooled studies using a random-effects model and summarized the quality of evidence with the GRADE approach. RESULTS: We assessed 373 citations and 19 full-text articles for eligibility, and included six studies. Six studies reported on functional recovery, but failed to detect a significant superiority of peripheral nerve block over general anesthesia (3 RCT studies, N = 160; SMD -0.15; CI at 95% -0.60-0.3; I2 = 45%; p = 0.07; low quality of evidence and 3 observational studies, N = 377; SMD -0.35; CI at 95% -0.71-0.01; I2 = 64%; p = 0.06; very low quality of evidence). CONCLUSIONS: Current literature is limited and fails to identify the benefit of peripheral nerve block on functional recovery. More studies are needed to assess the impact on long-term recovery. Considering the potential impact on clinical practice and training, a prospective study on functional recovery is ongoing (NCT04541745). TRIAL REGISTRATION: PROSPERO ID CRD42018116298. Registered on December 4, 2018.

Functional recovery of wrist surgery with regional versus general anesthesia: a prospective observational study.

PURPOSE: Regional anesthesia may favour postoperative rehabilitation by inhibiting peripheral sensitization and secondary hyperalgesia. The literature on this subject is limited. In the present FUNCTION study, we sought to compare the functional recovery post orthopedic wrist surgery with regional versus general anesthesia. METHODS: We conducted a single-centre prospective observational cohort study in adult patients with a distal radial fracture. Functional recovery was assessed with validated psychometrics questionnaires (Quick Disabilities of Arm, Shoulder and Hand [QuickDASH] and Patient-Rated Wrist Evaluation [PRWE]), range of motion, and grip strength. We used a linear mixed regression model to assess the impact of the anesthesia technique on functional recovery. Postoperative pain and patient satisfaction were evaluated using a visual analog scale. RESULTS: We recruited 76 patients. At 12 weeks post surgery, there was no difference between the type of anesthesia and functional recovery with the QuickDASH (higher scores worse; regional anesthesia [RA], 22.7 vs general anesthesia [GA], 19.3; adjusted mean difference [aMD], -0.3; 95% confidence interval [CI], -9.6 to 9.0; P = 0.9) and PRWE (higher scores worse; RA group, 21.0 vs GA group, 20.5; aMD, -3.3; 95% CI, -12.1 to 5.6; P = 0.93) questionnaires. Range of motion, satisfaction, and postoperative pain were similar between groups. Right-hand grip strength was higher in the GA group. CONCLUSION: Regional anesthesia was not associated with improved functional recovery compared with general anesthesia. The dominance of the operated limb was a confusion factor in all evaluation modalities. Further research taking into account the dominance of the hand is necessary to establish the effects of regional anesthesia on functional recovery. STUDY REGISTRATION: ClinicalTrials.gov (NCT04541745); registered 9 September 2020.

RéSUMé: OBJECTIF: L'anesthésie régionale pourrait favoriser la rééducation postopératoire en inhibant la sensibilisation périphérique et l'hyperalgésie secondaire. La littérature à ce sujet est limitée. Dans la présente étude nommée FUNCTION, nous avons cherché à comparer la récupération fonctionnelle après une chirurgie orthopédique du poignet réalisée sous anesthésie régionale vs sous anesthésie générale. MéTHODE: Nous avons réalisé une étude de cohorte observationnelle prospective monocentrique auprès de patient·es adultes présentant une fracture radiale distale. La récupération fonctionnelle a été évaluée à l'aide de questionnaires psychométriques validés (questionnaires QuickDASH [Quick Disabilities of Arm, Shoulder and Hand] et PRWE [Patient-Rated Wrist Evaluation]), de l'amplitude des mouvements et de la force de préhension. Nous avons utilisé un modèle de régression linéaire mixte pour évaluer l'impact de la technique d'anesthésie sur la récupération fonctionnelle. La douleur postopératoire et la satisfaction des patient·es ont été évaluées à l'aide d'une échelle visuelle analogique. RéSULTATS: Nous avons recruté 76 personnes. Douze semaines après la chirurgie, il n'y avait aucune différence entre le type d'anesthésie et la récupération fonctionnelle selon le questionnaire QuickDASH (scores plus élevés les pires; anesthésie régionale [AR], 22,7 vs anesthésie générale [AG], 19,3; différence moyenne ajustée [DMa], −0,3; intervalle de confiance [IC] à 95 %, −9,6 à 9,0; P = 0,9) et PRWE (scores plus élevés les pires; groupe AR, 21,0 vs groupe AG, 20,5; DMa, −3,3; IC 95 %, −12,1 à 5,6; P = 0,93). L'amplitude des mouvements, la satisfaction et la douleur postopératoire étaient similaires entre les groupes. La force de préhension de la main droite était plus élevée dans le groupe AG. CONCLUSION: L'anesthésie régionale n'a pas été associée à une amélioration de la récupération fonctionnelle par rapport à l'anesthésie générale. La prédominance du membre opéré était un facteur de confusion dans toutes les modalités d'évaluation. D'autres recherches tenant compte du côté dominant au niveau des mains sont nécessaires pour déterminer les effets de l'anesthésie régionale sur la récupération fonctionnelle. ENREGISTREMENT DE L'éTUDE: ClinicalTrials.gov (NCT04541745); enregistrée le 9 septembre 2020.

A randomized controlled trial comparing three supraglottic airway devices used as a conduit to facilitate tracheal intubation with flexible bronchoscopy.

PURPOSE: Once difficult ventilation and intubation are declared, guidelines suggest the use of a supraglottic airway (SGA) as a rescue device to ventilate and, if oxygenation is restored, subsequently as an intubation conduit. Nevertheless, few trials have formally studied recent SGA devices in patients. Our objective was to compare the efficacy of three second-generation SGA devices as conduits for bronchoscopy-guided endotracheal intubation. METHODS: In this prospective, single-blinded three-arm randomized controlled trial, patients with an American Society of Anesthesiologists Physical Status of I-III undergoing general anesthesia were randomized to bronchoscopy-guided endotracheal intubation using AuraGain™, Air-Q® Blocker, or i-gel® devices. We excluded patients with contraindications to an SGA or drugs and who were pregnant or had a neck, spine, or respiratory anomaly. The primary outcome was intubation time, measured from SGA circuit disconnection to CO2 measurement. Secondary outcomes included ease, time, and success of SGA insertion; success of intubation on first attempt; overall intubation success; number of attempts to intubate; ease of intubation; and ease of SGA removals. RESULTS: One hundred and fifty patients were enrolled from March 2017 to January 2018. Median intubation times were similar across the three groups (Air-Q Blocker, 44 sec; AuraGain, 45 sec; i-gel, 36 sec; P = 0.08). The i-gel was faster to insert (i-gel: 10 sec; Air-Q Blocker, 16 sec; AuraGain, 16 sec; P < 0.001) and easier to insert (Air-Q Blocker vs i-gel, P = 0.001; AuraGain vs i-gel, P = 0.002). Success of SGA insertion, success of intubation, and number of attempts were similar. The Air-Q Blocker was easier to remove than the i-gel (P < 0.001). CONCLUSION: All three second-generation SGA devices performed similarly regarding intubation. Despite minor benefits of the i-gel, clinicians should select their SGA based on clinical experience. STUDY REGISTRATION: ClinicalTrials.gov (NCT02975466); registered on 29 November 2016.

RéSUMé: OBJECTIF: Une fois qu'une ventilation et une intubation difficiles sont déclarées, les lignes directrices préconisent le recours à un dispositif supraglottique comme modalité de sauvetage pour ventiler le patient et, si l'oxygénation est rétablie, être ensuite utilisé comme conduit d'intubation. Toutefois, peu d'études ont formellement analysé l'utilisation des dispositifs supraglottiques récents chez de véritbales patients. Notre objectif était de comparer l'efficacité de trois dispositifs supraglottiques de deuxième génération utilisés comme conduits pour l'intubation endotrachéale guidée par bronchoscopie. MéTHODE: Dans cette étude prospective randomisée contrôlée à trois bras et à simple insu, les patients de statut physique I-III selon l'American Society of Anesthesiologists bénéficiant d'une anesthésie générale ont été randomisés à recevoir une intubation endotrachéale guidée par bronchoscopie via les dispositifs AuraGain™, Air-Q® Blocker ou i-gel®. Nous avons exclu les patients présentant des contre-indications à l'utilisation d'un dispositif supraglottique ou aux médicaments, ainsi que les patientes enceintes et les patients présentant une anomalie au niveau du cou, de la colonne vertébrale ou des voies aériennes. Le critère d'évaluation principal était le temps d'intubation mesuré entre le moment de déconnexion du dispositif supraglottique du circuit et le moment de mesure du CO2. Les critères d'évaluation secondaires comprenaient la facilité, le délai et la réussite de l'insertion du dispositif supraglottique; la réussite de l'intubation à la première tentative; la réussite globale de l'intubation; le nombre de tentatives d'intubation; la facilité d'intubation; et la facilité de retrait du dispositif supraglottique. RéSULTATS: Cent cinquante patients ont été recrutés de mars 2017 à janvier 2018. Les délais d'intubation médians étaient similaires dans les trois groupes (Air-Q Blocker : 44 sec; AuraGain : 45 sec; i-gel : 36 sec; P = 0,08). L'i-gel était plus rapide à insérer (i-gel : 10 sec; Air-Q Blocker : 16 sec; AuraGain : 16 sec; P < 0,001) et plus facile à insérer (Air-Q Blocker vs i-gel : P = 0,001; AuraGain vs i-gel : P = 0,002). La réussite de l'insertion du dispositif supraglottique, la réussite de l'intubation et le nombre de tentatives étaient similaires. L'Air-Q Blocker était plus facile à retirer que l'i-gel (P < 0,001). CONCLUSION: Les trois dispositifs supraglottiques de deuxième génération ont tous affiché une performance similaire en matière d'intubation. Malgré des avantages mineurs de l'i-gel, les cliniciens devraient choisir leur dispositif supraglottique en fonction de leur expérience clinique. ENREGISTREMENT DE L'éTUDE: ClinicalTrials.gov (NCT02975466); enregistrée le 29 novembre 2016.

Small-Volume Blood Collection Tubes to Reduce Transfusions in Intensive Care: The STRATUS Randomized Clinical Trial.

Importance: Blood collection for laboratory testing in intensive care unit (ICU) patients is a modifiable contributor to anemia and red blood cell (RBC) transfusion. Most blood withdrawn is not required for analysis and is discarded. Objective: To determine whether transitioning from standard-volume to small-volume vacuum tubes for blood collection in ICUs reduces RBC transfusion without compromising laboratory testing procedures. Design, Setting, and Participants: Stepped-wedge cluster randomized trial in 25 adult medical-surgical ICUs in Canada (February 5, 2019 to January 21, 2021). Interventions: ICUs were randomized to transition from standard-volume (n = 10 940) to small-volume tubes (n = 10 261) for laboratory testing. Main Outcomes and Measures: The primary outcome was RBC transfusion (units per patient per ICU stay). Secondary outcomes were patients receiving at least 1 RBC transfusion, hemoglobin decrease during ICU stay (adjusted for RBC transfusion), specimens with insufficient volume for testing, length of stay in the ICU and hospital, and mortality in the ICU and hospital. The primary analysis included patients admitted for 48 hours or more, excluding those admitted during a 5.5-month COVID-19-related trial hiatus. Results: In the primary analysis of 21 201 patients (mean age, 63.5 years; 39.9% female), which excluded 6210 patients admitted during the early COVID-19 pandemic, there was no significant difference in RBC units per patient per ICU stay (relative risk [RR], 0.91 [95% CI, 0.79 to 1.05]; P = .19; absolute reduction of 7.24 RBC units/100 patients per ICU stay [95% CI, -3.28 to 19.44]). In a prespecified secondary analysis (n = 27 411 patients), RBC units per patient per ICU stay decreased after transition from standard-volume to small-volume tubes (RR, 0.88 [95% CI, 0.77 to 1.00]; P = .04; absolute reduction of 9.84 RBC units/100 patients per ICU stay [95% CI, 0.24 to 20.76]). Median decrease in transfusion-adjusted hemoglobin was not statistically different in the primary population (mean difference, 0.10 g/dL [95% CI, -0.04 to 0.23]) and lower in the secondary population (mean difference, 0.17 g/dL [95% CI, 0.05 to 0.29]). Specimens with insufficient quantity for analysis were rare (≤0.03%) before and after transition. Conclusions and Relevance: Use of small-volume blood collection tubes in the ICU may decrease RBC transfusions without affecting laboratory analysis. Trial Registration: ClinicalTrials.gov Identifier: NCT03578419.

Diagnosis of Pulmonary Embolism with d-Dimer Adjusted to Clinical Probability.

BACKGROUND: Retrospective analyses suggest that pulmonary embolism is ruled out by a d-dimer level of less than 1000 ng per milliliter in patients with a low clinical pretest probability (C-PTP) and by a d-dimer level of less than 500 ng per milliliter in patients with a moderate C-PTP. METHODS: We performed a prospective study in which pulmonary embolism was considered to be ruled out without further testing in outpatients with a low C-PTP and a d-dimer level of less than 1000 ng per milliliter or with a moderate C-PTP and a d-dimer level of less than 500 ng per milliliter. All other patients underwent chest imaging (usually computed tomographic pulmonary angiography). If pulmonary embolism was not diagnosed, patients did not receive anticoagulant therapy. All patients were followed for 3 months to detect venous thromboembolism. RESULTS: A total of 2017 patients were enrolled and evaluated, of whom 7.4% had pulmonary embolism on initial diagnostic testing. Of the 1325 patients who had a low C-PTP (1285 patients) or moderate C-PTP (40 patients) and a negative d-dimer test (i.e., <1000 or <500 ng per milliliter, respectively), none had venous thromboembolism during follow-up (95% confidence interval [CI], 0.00 to 0.29%). These included 315 patients who had a low C-PTP and a d-dimer level of 500 to 999 ng per milliliter (95% CI, 0.00 to 1.20%). Of all 1863 patients who did not receive a diagnosis of pulmonary embolism initially and did not receive anticoagulant therapy, 1 patient (0.05%; 95% CI, 0.01 to 0.30) had venous thromboembolism. Our diagnostic strategy resulted in the use of chest imaging in 34.3% of patients, whereas a strategy in which pulmonary embolism is considered to be ruled out with a low C-PTP and a d-dimer level of less than 500 ng per milliliter would result in the use of chest imaging in 51.9% (difference, -17.6 percentage points; 95% CI, -19.2 to -15.9). CONCLUSIONS: A combination of a low C-PTP and a d-dimer level of less than 1000 ng per milliliter identified a group of patients at low risk for pulmonary embolism during follow-up. (Funded by the Canadian Institutes of Health Research and others; PEGeD ClinicalTrials.gov number, NCT02483442.).

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.

Opioids for Cesarean delivery under general anesthesia and neonatal outcome: a historical cohort study.

PURPOSE: The lack of evidence-based recommendations for Cesarean delivery under general anesthesia can lead to practice variability and morbidity, particularly concerning the use of opioids. The goal of this study was to describe the practice for Cesarean delivery performed under general anesthesia and identify predictive factors for opioid use at anesthesia induction and the need for neonatal resuscitation. METHODS: We conducted a single-center historical cohort study. We included all adult parturients who underwent Cesarean delivery under general anesthesia between 1 January 2012 and 31 December 2016. We excluded patients who received general anesthesia after delivery or with known intrauterine fetal demise. We collected data on anesthetic medication use, maternal comorbidities, neonatal resuscitation, and anesthetic complications. We used logistic regression models to identify predictors of opioid use at anesthesia induction and predictors of neonatal resuscitation. RESULTS: Two hundred and three patients were included. Propofol was the main induction agent (n = 195), 201 patients received neuromuscular blockers, and 67 received opioids. No maternal factors, including hypertensive disorders of pregnancy (odds ratio [OR], 1.94; 95% confidence interval [CI], 0.96 to 3.95; P = 0.06), were predictors of opioid use at induction of anesthesia. No statistical differences were detected between opioid administration groups, except for Cesarean indication, with preeclampsia being the main contributor. Low gestational age (OR, 0.75; 95% CI, 0.65 to 0.87; P = 0.002) was the only predictor of neonatal resuscitation. CONCLUSION: Hypertensive disorders of pregnancy were not predictors of opioid use and opioid use was not a predictor of neonatal resuscitation. This suggests opioids could be used for maternal indications.

RéSUMé: OBJECTIF: L'absence de recommandations fondées sur des données probantes pour les accouchements par césarienne sous anesthésie générale peut entraîner une variabilité de la pratique et une morbidité, en particulier en ce qui concerne l'utilisation d'opioïdes. L'objectif de cette étude était de décrire la pratique pour les accouchements par césarienne réalisés sous anesthésie générale ainsi que d'identifier les facteurs prédictifs d'une utilisation d'opioïdes lors de l'induction de l'anesthésie et la nécessité d'une réanimation néonatale. MéTHODE: Nous avons mené une étude de cohorte historique monocentrique. Nous avons inclus toutes les parturientes adultes qui ont accouché par césarienne sous anesthésie générale entre le 1er janvier 2012 et le 31 décembre 2016. Nous avons exclu les patientes ayant reçu une anesthésie générale après l'accouchement ou ayant subi une mort fœtale intra-utérine connue. Nous avons recueilli des données sur l'utilisation de médicaments anesthésiques, les comorbidités maternelles, la réanimation néonatale et les complications anesthésiques. Nous avons utilisé des modèles de régression logistique pour identifier les prédicteurs d'une utilisation d'opioïdes lors de l'induction de l'anesthésie et les prédicteurs de réanimation néonatale. RéSULTATS: Deux cent trois patientes ont été incluses. Le propofol était le principal agent d'induction (n = 195), 201 patientes ont reçu des bloqueurs neuromusculaires et 67 ont reçu des opioïdes. Aucun facteur maternel, y compris les troubles hypertensifs de la grossesse (rapport de cotes [RC], 1,94; intervalle de confiance [IC] à 95 %, 0,96 à 3,95; P = 0,06), n'était un prédicteur d'utilisation d'opioïdes au moment de l'induction de l'anesthésie. Aucune différence statistique n'a été détectée entre les groupes d'administration d'opioïdes, à l'exception de l'indication de césarienne, la prééclampsie étant le principal contributeur. Un âge gestationnel bas (RC, 0,75; IC 95 %, 0,65 à 0,87; P = 0,002) était le seul prédicteur de réanimation néonatale. CONCLUSION: Les troubles hypertensifs de la grossesse n'étaient pas des prédicteurs de l'utilisation d'opioïdes et l'utilisation d'opioïdes n'était pas un prédicteur de réanimation néonatale. Cela suggère que les opioïdes pourraient être utilisés pour des indications maternelles.

The evolution of mean arterial pressure in critically ill patients on vasopressors before and during a trial comparing a specific mean arterial pressure target to usual care.

BACKGROUND: In randomized clinical controlled trials, the choice of usual care as the comparator may be associated with better clinician uptake of the study protocol and lead to more generalizable results. However, if care processes evolve to resemble the intervention during the course of a trial, differences between the intervention group and usual care control group may narrow. We evaluated the effect on mean arterial pressure of an unblinded trial comparing a lower mean arterial pressure target to reduce vasopressor exposure, vs. a clinician-selected mean arterial pressure target, in critically ill patients at least 65 years old. METHODS: For this multicenter observational study using data collected both prospectively and retrospectively, patients were recruited from five of the seven trial sites. We compared the mean arterial pressure of patients receiving vasopressors, who met or would have met trial eligibility criteria, from two periods: [1] at least 1 month before the trial started, and [2] during the trial period and randomized to usual care, or not enrolled in the trial. RESULTS: We included 200 patients treated before and 229 after trial initiation. There were no differences in age (mean 74.5 vs. 75.2 years; p = 0.28), baseline Acute Physiology and Chronic Health Evaluation II score (median 26 vs. 26; p = 0.47) or history of chronic hypertension (n = 126 [63.0%] vs. n = 153 [66.8%]; p = 0.41). Mean of the mean arterial pressure was similar between the two periods (72.5 vs. 72.4 mmHg; p = 0.76). CONCLUSIONS: The initiation of a trial of a prescribed lower mean arterial pressure target, compared to a usual clinician-selected target, was not associated with a change in mean arterial pressure, reflecting stability in the net effect of usual clinician practices over time. Comparing prior and concurrent control groups may alleviate concerns regarding drift in usual practices over the course of a trial or permit quantification of any change.

Clinical evaluation and ancillary testing for the diagnosis of death by neurologic criteria: a cross-sectional survey of Canadian intensivists.

PURPOSE: Trust in the deceased organ donation process relies on the expectation that the diagnosis of death by neurologic criteria (DNC) is accurate and reliable. The objective of this study was to assess the perceptions and approaches to DNC diagnosis among Canadian intensivists. METHODS: We conducted a self-administered, online, cross-sectional survey of Canadian intensivists. Our sampling frame included all intensivists practicing in Canadian institutions. Results are reported using descriptive statistics. RESULTS: Among 550 identified intensivists, 249 (45%) completed the survey. Respondents indicated they would be comfortable diagnosing DNC based on clinical criteria alone in cases where there is movement in response to stimulation (119/248; 48%); inability to evaluate upper/lower extremity responses (84/249; 34%); spontaneous peripheral movement (76/249; 31%); inability to evaluate both oculocephalic and oculo-caloric reflexes (40/249; 16%); presence of high cervical spinal cord injury (40/249; 16%); and within 24 hr of hypoxemic-ischemic brain injury (38/247; 15%). Most respondents agreed that an ancillary test should always be conducted when a complete clinical evaluation is impossible (225/241; 93%); when there is possibility of a residual sedative effect (216/242; 89%); when the mechanism for brain injury is unclear (172/241; 71%); and if isolated brainstem injury is suspected (142/242; 59%). Sixty-six percent (158/241) believed that ancillary tests are sensitive and 55% (132/241) that they are specific for DNC. Respondents considered the following ancillary tests useful for DNC: four-vessel conventional angiography (211/241; 88%), nuclear imaging (179/240; 75%), computed tomography (CT) angiography (156/240; 65%), and CT perfusion (134/240; 56%). CONCLUSION: There is variability in perceptions and approaches to DNC diagnosis among Canadian intensivists, and some practices are inconsistent with national recommendations.

RéSUMé: OBJECTIF: La confiance dans le processus de don d'organes de donneurs décédés repose sur l'attente que le diagnostic de décès déterminé par des critères neurologiques (DDN) soit précis et fiable. L'objectif de cette étude était d'évaluer les perceptions et les approches du diagnostic de DDN chez les intensivistes canadiens. MéTHODE: Nous avons mené un sondage transversal auto-administré et en ligne auprès des intensivistes canadiens. Notre base d'échantillonnage comprenait tous les intensivistes exerçant dans des établissements canadiens. Les résultats sont présentés à l'aide de statistiques descriptives. RéSULTATS: Parmi les 550 intensivistes identifiés, 249 (45 %) ont répondu au sondage. Les répondants ont indiqué qu'ils seraient à l'aise de diagnostiquer un DDN en fonction de critères cliniques seulement dans les cas où il y a : un mouvement en réponse à une stimulation (119/248; 48 %); une incapacité à évaluer les réponses des membres supérieurs et inférieurs (84/249; 34 %); un mouvement périphérique spontané (76/249; 31 %); une incapacité à évaluer à la fois les réflexes oculo-céphaliques et vestibulo-oculaires (40/249; 16 %); la présence de lésions médullaires cervicales hautes (40/249; 16 %); et dans les 24 heures suivant une lésion cérébrale hypoxémique-ischémique (38/247; 15 %). La plupart des répondants étaient d'accord pour dire qu'un test auxiliaire devrait toujours être réalisé lorsqu'une évaluation clinique complète est impossible (225/241; 93 %); lorsqu'il y a possibilité d'un effet sédatif résiduel (216/242; 89 %); lorsque le mécanisme de la lésion cérébrale n'est pas clair (172/241; 71 %); et si une lésion isolée du tronc cérébral est suspectée (142/242; 59 %). Soixante-six pour cent (158/241) des répondants étaient d'avis que les tests auxiliaires étaient sensibles et 55 % (132/241) qu'ils étaient spécifiques pour le DDN. Les répondants ont jugé utiles les tests auxiliaires suivants pour le DDN : l'angiographie conventionnelle des quatre vaisseaux (211/241; 88 %), l'imagerie nucléaire (179/240; 75 %), l'angiographie par tomodensitométrie (TDM) (156/240; 65 %) et la perfusion en TDM (134/240; 56 %). CONCLUSION: Les perceptions et les approches du diagnostic de DDN varient parmi les intensivistes canadiens, et certaines pratiques ne sont pas conformes aux recommandations nationales.

Postoperative outcomes in surgical COVID-19 patients: a multicenter cohort study.

BACKGROUND: Data on postoperative outcomes of the COVID-19 patient population is limited. We described COVID-19 patients who underwent a surgery and the pandemic impact on surgical activities. METHODS: We conducted a multicenter cohort study between March 13 and June 192,020. We included all COVID-19 patients who underwent surgery in nine centres of the Province of Québec, the Canadian province most afflicted by the pandemic. We also included concomitant suspected COVID-19 (subsequently confirmed not to have COVID-19) patients and patients who had recovered from it. We collected data on baseline characteristics, postoperative complications and postoperative mortality. Our primary outcome was 30-day mortality. We also collected data on overall surgical activities during this first wave and during the same period in 2019. RESULTS: We included 44 COVID-19 patients, 18 suspected patients, and 18 patients who had recovered from COVID-19 at time of surgery. Among the 44 COVID-19 patients, 31 surgeries (71%) were urgent and 16 (36%) were major. In these patients, pulmonary complications were frequent (25%) and 30-day mortality was high (15.9%). This mortality was higher in patients with symptoms (23.1%) compared to those without symptoms (5.6%), although not statistically significant (p = 0.118). Of the total 22,616 cases performed among participating centres during the study period, only 0.19% had COVID-19 at the time of surgery. Fewer procedures were performed during the study period compared to the same period in 2019 (44,486 cases). CONCLUSION: In this Canadian cohort study, postoperative 30-day mortality in COVID-19 patients undergoing surgery was high (15.9%). Although few surgeries were performed on COVID-19 patients, the pandemic impact on surgical activity volume was important. TRIAL REGISTRATION: ClinicalTrials.gov Identifier: NCT04458337 .

Attitude and knowledge of medical students about organ donation - training needs identified from a Canadian survey.

BACKGROUND: Appropriate training of health professionals has been recommended to increase organ donation rates. Some studies have shown insufficient knowledge among medical students. This survey aims to describe their knowledge and attitude toward organ donation (OD). METHOD: We designed, pre-tested and conducted an online survey of all undergraduate medical students from Montreal, Laval and Sherbrooke universities in 2016-2017. Multivariate linear regression identified factors associated with a better knowledge score. RESULTS: Twenty-two percent (750/3344) of students completed the survey. Ninety-one percent of students adequately knew that neurological death is irreversible; 76% acknowledged that someone could be neurologically deceased while his heart is still beating; 69% were not aware of circulatory determination of death. For only one knowledge item, senior students had a better answer than junior students. Total knowledge score was associated with exposure to OD during medical studies and comfort in answering patients' questions about OD (p < 0,001). Regarding attitude, 96% of respondents wished to become organ donors after death and 92% supported OD training during their medical training. CONCLUSION: Despite a favourable attitude, medical students have limited knowledge of OD. Findings suggest the need for a formal curriculum about OD, as students expressed.

Effect of Probiotics on Incident Ventilator-Associated Pneumonia in Critically Ill Patients: A Randomized Clinical Trial.

Importance: Growing interest in microbial dysbiosis during critical illness has raised questions about the therapeutic potential of microbiome modification with probiotics. Prior randomized trials in this population suggest that probiotics reduce infection, particularly ventilator-associated pneumonia (VAP), although probiotic-associated infections have also been reported. Objective: To evaluate the effect of Lactobacillus rhamnosus GG on preventing VAP, additional infections, and other clinically important outcomes in the intensive care unit (ICU). Design, Setting, and Participants: Randomized placebo-controlled trial in 44 ICUs in Canada, the United States, and Saudi Arabia enrolling adults predicted to require mechanical ventilation for at least 72 hours. A total of 2653 patients were enrolled from October 2013 to March 2019 (final follow-up, October 2020). Interventions: Enteral L rhamnosus GG (1 × 1010 colony-forming units) (n = 1321) or placebo (n = 1332) twice daily in the ICU. Main Outcomes and Measures: The primary outcome was VAP determined by duplicate blinded central adjudication. Secondary outcomes were other ICU-acquired infections including Clostridioides difficile infection, diarrhea, antimicrobial use, ICU and hospital length of stay, and mortality. Results: Among 2653 randomized patients (mean age, 59.8 years [SD], 16.5 years), 2650 (99.9%) completed the trial (mean age, 59.8 years [SD], 16.5 years; 1063 women [40.1%.] with a mean Acute Physiology and Chronic Health Evaluation II score of 22.0 (SD, 7.8) and received the study product for a median of 9 days (IQR, 5-15 days). VAP developed among 289 of 1318 patients (21.9%) receiving probiotics vs 284 of 1332 controls (21.3%; hazard ratio [HR], 1.03 (95% CI, 0.87-1.22; P = .73, absolute difference, 0.6%, 95% CI, -2.5% to 3.7%). None of the 20 prespecified secondary outcomes, including other ICU-acquired infections, diarrhea, antimicrobial use, mortality, or length of stay showed a significant difference. Fifteen patients (1.1%) receiving probiotics vs 1 (0.1%) in the control group experienced the adverse event of L rhamnosus in a sterile site or the sole or predominant organism in a nonsterile site (odds ratio, 14.02; 95% CI, 1.79-109.58; P < .001). Conclusions and Relevance: Among critically ill patients requiring mechanical ventilation, administration of the probiotic L rhamnosus GG compared with placebo, resulted in no significant difference in the development of ventilator-associated pneumonia. These findings do not support the use of L rhamnosus GG in critically ill patients. Trial Registration: ClinicalTrials.gov Identifier: NCT02462590.

Worldwide management of donors after neurological death: a systematic review and narrative synthesis of guidelines.

OBJECTIVE: The objectives of this study were to systematically identify and describe guidelines for the care of neurologically deceased donors and to evaluate their methodological quality, with the aim of informing and supporting the new Canadian guidelines for the management of organ donors. METHODOLOGY: Following a systematic search, we included any document endorsed by an organ donation organization, a professional society, or a government, that aims to direct the medical management of adult, neurologically deceased, multi-organ donors. We extracted recommendations pertaining to six domains: the autonomic storm, hemodynamic instability, hormone supplementation, ventilation, blood product transfusions, and general intensive care unit (ICU) care. Methodological quality of the guidelines was assessed by the validated AGREE-II tool. MAIN FINDINGS: This review includes 27 clinical practice guidelines representing 26 countries published between 1993 and 2019. Using the AGREE-II validated tool for the evaluation of guidelines' quality, documents generally scored well on their scope and clarity of presentation. Nevertheless, quality was limited in terms of the scientific rigor of guideline development. Recommendations varied substantially across the domains of managing the autonomic storm, subsequent management of hemodynamic instability, hormone therapy, mechanical ventilation, blood product transfusion, and general ICU care. We found consistent recommendations for low tidal volume ventilation subsequent to the publication of a landmark clinical trial. CONCLUSION: Highly inconsistent recommendations for deceased donor care summarized in this review likely reflect the relatively slow emergence of high-quality clinical research in this field, as well as a late uptake of recent validated guideline methodology. Even in this context of few randomized-controlled trials, our group supported the need for new Canadian guidelines for the management of organ donors that follow rigorous recognized methodology and grading of the evidence. TRIAL REGISTRATION: PROSPERO (CRD42018084012); registered 25 February 2016.

RéSUMé: OBJECTIF: Les objectifs de cette étude étaient d'identifier et de décrire de façon systématique les lignes directrices concernant les soins à prodiguer aux donneurs suivant un décès neurologique et d'évaluer leur qualité méthodologique, avec pour but d'informer et d'appuyer les nouvelles lignes directrices canadiennes de prise en charge des donneurs d'organes. MéTHODOLOGIE: À la suite d'une recherche systématique, nous avons inclus tout document endossé par un organisme de dons d'organes, une société professionnelle ou un gouvernement et ayant pour but d'orienter la prise en charge médicale des donneurs adultes d'organes multiples à la suite d'un décès neurologique. Nous avons extrait les recommandations touchant six domaines : la tempête catécholaminergique, l'instabilité hémodynamique, la supplémentation hormonale, la ventilation, les transfusions de produits sanguins et les soins généraux à l'unité de soins intensifs (USI). La qualité méthodologique des lignes directrices a été évaluée avec l'outil validé AGREE-II. CONSTATIONS PRINCIPALES: Cette revue porte sur 27 guides d'exercice cliniques représentant 26 pays et publiés entre 1993 et 2019. En se fondant sur l'outil validé AGREE-II pour l'évaluation de la qualité des lignes directrices, les documents ont en règle générale obtenu un bon score en ce qui touchait à leurs objectifs et à la clarté de leur présentation. Toutefois, la qualité était limitée en matière de rigueur scientifique employée pour la mise au point des lignes directrices. Les recommandations variaient considérablement concernant les questions pertinentes à la prise en charge de la tempête catécholaminergique, à la prise en charge subséquente de l'instabilité hémodynamique, à l'hormonothérapie, à la ventilation mécanique, à la transfusion de produits sanguins, et aux soins généraux à l'USI. À la suite de la publication d'une étude clinique importante, les recommandations concernant la ventilation à volume courant bas étaient constantes. CONCLUSION: Le manque de cohérence des lignes directrices touchant les soins aux donneurs décédés résumées dans cette revue est probablement le reflet de l'émergence relativement lente de recherches cliniques de qualité élevée dans ce domaine, ainsi que de l'adoption tardive des méthodologies récentes et validées pour l'élaboration de lignes directrices. Même dans le contexte actuel de rareté d'études randomisées contrôlées, notre groupe appuie la nécessité de nouvelles lignes directrices canadiennes concernant la prise en charge des donneurs d'organes qui respectent une méthodologie reconnue et rigoureuse ainsi qu'une classification des données probantes. ENREGISTREMENT DE L'éTUDE: PROSPERO (CRD42018084012); enregistrée le 25 février 2016.

Survey of Canadian critical care physicians' knowledge and attitudes towards legislative aspects of the deceased organ donation system.

PURPOSE: We surveyed Canadian critical care physicians who may care for patients who are potential organ donors to understand their attitudes and knowledge of legislation governing the deceased organ donation system. METHODS: We used a web-based, self-administered survey that included questions related to opt-out consent and mandatory referral legislation. Potential participants were identified through membership lists of professional societies and manual searches. We designed our survey using standardized methods and administered it in February and March 2018. RESULTS: Fifty percent (263/529) of potential participants completed the questionnaire. A majority (61%; 144/235) supported a change towards an opt-out consent model, and 77% (181/235) stated they believe it would increase donation rates. Asked if opt-out consent would change their practices, 71% (166/235) stated an opt-out model would not change how or if they approach families to discuss donation. Fifty-six percent (139/249) supported mandatory referral laws, while only 42% (93/219) of those working in provinces with mandatory referral correctly stated that such laws exist in their province. Respondents gave variable responses on who should be accountable when patients are not referred, and 16% (40/249) believed no one should be held accountable. CONCLUSIONS: While a majority of critical care physicians supported opt-out consent and mandatory referral, many were neutral or against it. Many were unaware of existing laws and had variable opinions on how to ensure accountability. Efforts to increase understanding of how legislative models influence practice are required for any law to achieve its desired effect.

RéSUMé: OBJECTIF: Nous avons étudié les intensivistes canadiens qui prennent soin de patients potentiellement donneurs d'organes afin de comprendre leurs attitudes et connaissances quant aux lois régissant le système de don d'organes de donneurs décédés. MéTHODE: Nous avons utilisé un sondage électronique auto-administré incluant des questions liées au consentement implicite avec option de retrait et à la législation de référence obligatoire. Les participants potentiels ont été identifiés grâce aux listes des sociétés professionnelles et par des recherches manuelles. Nous avons conçu notre sondage à l'aide de méthodes standardisées et l'avons administré en février et mars 2018. RéSULTATS: Cinquante pour cent (263/529) des participants potentiels ont complété le questionnaire. La majorité (61 %; 144/235) était en faveur d'un changement vers un modèle de consentement avec option de retrait, et 77 % (181/235) ont déclaré penser que cela augmenterait les taux de don. Lorsqu'il leur a été demandé si l'option de consentement avec option de retrait modifierait leur pratique, 71 % (166/235) ont affirmé qu'un modèle avec possibilité de retrait ne modifierait pas leur façon ou leur intention d'approcher les familles pour parler de don d'organes. Cinquante-six pour cent (139/249) étaient en faveur de lois concernant la référence obligatoire, alors que seulement 42 % (93/219) des intensivistes travaillant dans des provinces où la référence était obligatoire ont correctement déclaré que de telles lois existaient dans leur province. Les répondants ont donné des réponses variables quant à l'imputabilité lors de la non-référence des patient, et 16 % (40/249) étaient d'avis que personne ne devrait être tenu responsable. CONCLUSION: Alors que la majorité des intensivistes était en faveur du consentement avec option de retrait et de la référence obligatoire, bon nombre n'avaient pas d'avis sur la question ou étaient contre. De nombreux intensivistes ne connaissaient pas bien les lois existantes et avaient des opinions variables sur la façon de garantir l'imputabilité. Des efforts sont nécessaires pour augmenter la compréhension de la manière dont les modèles législatifs influencent la pratique afin qu'une loi, quelle qu'elle soit, ait l'effet désiré.

Survey of Canadian intensivists on physician non-referral and family override of deceased organ donation.

PURPOSE: Intensive care physicians play an important role in the identification and referral of potential organ donors in Canada. Nevertheless, little is known about intensivists' attitudes or behaviours in situations where families override previously expressed consent to donate; nor why physicians elect not to refer patients who are potential donors to provincial organ donation organizations (physician non-referral). METHODS: We integrated questions regarding family override and physician non-referral into an online, self-administered survey of Canadian intensivists. We report results descriptively. RESULTS: Fifty percent of targeted respondents (n = 550) participated. Fifty-five percent reported having witnessed family override situations and 44% reported having personally not referred patients who were potential donors. Fifty-six percent of respondents stated they would not pursue donation in the face of family override; 2% stated they would continue with the donation process. Fear of loss of trust in the donation system (81%) and obligation to respect the grief and desires of surrogate decision makers (71%) were frequently reported reasons to respect family override requests. Respondents who chose not to refer patients often did so based on organ dysfunction they assumed would preclude donation (59%), or a perception that the family was too distressed to consider donation (42%). No respondents reported that personally held beliefs against organ donation influenced their decision. CONCLUSION: Physicians caring for patients who are potential organ donors commonly encounter both family override and physician non-referral situations. Knowledge translation of optimal practices in identification and referral could help ensure that physician practices align with legal requirements and practice recommendations.