AARC Clinical Practice Guideline: Spontaneous Breathing Trials for Liberation From Adult Mechanical Ventilation.

Despite prior publications of clinical practice guidelines related to ventilator liberation, some questions remain unanswered. Many of these questions relate to the details of bedside implementation. We, therefore, formed a guidelines committee of individuals with experience and knowledge of ventilator liberation as well as a medical librarian. Using Grading of Recommendations Assessment, Development, and Evaluation (GRADE) methodology, we make the following recommendations: (1) We suggest that calculation of a rapid shallow breathing index is not needed to determine readiness for a spontaneous breathing trial (SBT) (conditional recommendation; moderate certainty); (2) We suggest that SBTs can be conducted with or without pressure support ventilation (conditional recommendation, moderate certainty); (3) We suggest a standardized approach to assessment and, if appropriate, completion of an SBT before noon each day (conditional recommendation, very low certainty); and (4) We suggest that FIO2 should not be increased during an SBT (conditional recommendation, very low certainty). These recommendations are intended to assist bedside clinicians to liberate adult critically ill patients more rapidly from mechanical ventilation.

Spatiotemporally Precise Optical Manipulation of Intracellular Molecular Activities.

Controlling chemical processes in live cells is a challenging task. The spatial heterogeneity of biochemical reactions in cells is often overlooked by conventional means of incubating cells with desired chemicals. A comprehensive understanding of spatially diverse biochemical processes requires precise control over molecular activities at the subcellular level. Herein, a closed-loop optoelectronic control system is developed that allows the manipulation of biomolecular activities in live cells at high spatiotemporal precision. Chemical-selective fluorescence signals are utilized to command lasers that trigger specific chemical processes or control the activation of photoswitchable inhibitors at desired targets. This technology is fully compatible with laser scanning confocal fluorescence microscopes. The authors demonstrate selective interactions of a 405 nm laser with targeted organelles and simultaneous monitoring of cell responses by fluorescent protein signals. Notably, blue laser interaction with the endoplasmic reticulum leads to a more pronounced reduction in cytosolic green fluorescent protein signals in comparison to that with nuclei and lipid droplets. Moreover, when combined with a photoswitchable inhibitor, microtubule polymerization is selectively inhibited within the subcellular compartments. This technology enables subcellular spatiotemporal optical manipulation over chemical processes and drug activities, exclusively at desired targets, while minimizing undesired effects on non-targeted locations.

2022 Year in Review: Ventilator Liberation.

Mechanical ventilation is ubiquitous in critical care, and duration of ventilator liberation is variable and multifactorial. While ICU survival has increased over the last two decades, positive-pressure ventilation can cause harm to patients. Weaning and discontinuation of ventilatory support is the first step in ventilator liberation. Clinicians have a wealth of evidence-based literature at their disposal; however, more high-quality research is needed to describe outcomes. Additionally, this knowledge must be distilled into evidence-based practice and applied at the bedside. A proliferation of research on the subject of ventilator liberation has been published in the last 12 months. Whereas some authors have reconsidered the value of applying the rapid shallow breathing index in weaning protocols, others have begun to investigate new indices to predict liberation outcomes. New tools such as diaphragmatic ultrasonography have begun to appear in the literature as a tool for outcome prediction. A number of systematic reviews with both meta-analysis and network meta-analysis that synthesize the literature on ventilator liberation have also been published in the last year. This review describes changes in performance, monitoring of spontaneous breathing trials, and evaluations of successful ventilator liberation.

Characteristics, Identification, Training, and Perception of Leaders in Respiratory Care.

BACKGROUND: Leadership is critical to high-functioning teams; however, data are lacking for what defines successful respiratory therapist (RT) leadership. Leaders need a wide range of skills to be successful, although the exact characteristics, behaviors, and accomplishments of successful RT leaders are unknown. We performed a survey of respiratory care leaders to evaluate different aspects of RT leadership. METHODS: We developed a survey of RT leaders to examine respiratory care leadership in a variety of professional settings. Different aspects of leadership and the relationships between perceptions of leadership and well-being were assessed. Data analysis was descriptive. RESULTS: We received 124 responses, with a response rate of 37%. Respondents had a median 22 y of RT experience, and 69% were in leadership positions. The most-important skills identified for potential leaders were critical thinking (90%) and people skills (88%). Self-initiated projects (82%), intradepartmental education (71%), and precepting (63%) were noted accomplishments. Reasons for exclusion from leadership included poor work ethic (94%), dishonesty (92%), difficulty getting along with others (89%), unreliable (90%), and not being a team player (86%). Most respondents (77%) agreed American Association for Respiratory Care membership be a requirement for leadership; however, 31% required membership. Integrity (71%) was noted consistently as a characteristic of successful leaders. There was no consensus for behaviors of successful versus unsuccessful leaders or what defines successful leadership. Ninety-five percent of leaders had received some leadership training. Respondents reported that well-being is affected by leadership, departmental culture, peers, and leaders with burnout; 34% of respondents felt people with burnout received good support at their institution, whereas 61% felt maintaining well-being is left to individuals. CONCLUSIONS: Critical thinking and people skills were the most-important skills for potential leaders. Limited consensus existed on characteristics, behaviors, and defined success of leaders. Most respondents agreed leadership influences well-being.

Chemical-imaging-guided optical manipulation of biomolecules.

Chemical imaging via advanced optical microscopy technologies has revealed remarkable details of biomolecules in living specimens. However, the ways to control chemical processes in biological samples remain preliminary. The lack of appropriate methods to spatially regulate chemical reactions in live cells in real-time prevents investigation of site-specific molecular behaviors and biological functions. Chemical- and site-specific control of biomolecules requires the detection of chemicals with high specificity and spatially precise modulation of chemical reactions. Laser-scanning optical microscopes offer great platforms for high-speed chemical detection. A closed-loop feedback control system, when paired with a laser scanning microscope, allows real-time precision opto-control (RPOC) of chemical processes for dynamic molecular targets in live cells. In this perspective, we briefly review recent advancements in chemical imaging based on laser scanning microscopy, summarize methods developed for precise optical manipulation, and highlight a recently developed RPOC technology. Furthermore, we discuss future directions of precision opto-control of biomolecules.

Enhancing Respiratory Therapists' Well-Being: Battling Burnout in Respiratory Care.

Burnout is a major problem in health care and is associated with adverse sequelae for patients, health care workers, and organizations. Burnout among respiratory therapists (RTs) is as high as 79% and is associated with poor or ineffective leadership, inadequate staffing, high work load, non-leadership position, and work environment. An understanding of burnout is necessary for both staff and leadership to ensure RT well-being. This narrative review will discuss the psychology of burnout, prevalence, drivers, mitigation strategies, and future directions for research.

Burnout Among Respiratory Therapists Amid the COVID-19 Pandemic.

BACKGROUND: Burnout is a major challenge in health care and is associated with poor overall well-being, increased medical errors, worse patient outcomes, and low job satisfaction. There is scant literature focused on the respiratory therapist's (RT) experience of burnout, and a thorough exploration of RTs' perception of factors associated with burnout has not been reported. The aim of this qualitative study was to understand the factors associated with burnout as experienced by RTs amid the COVID-19 pandemic. METHODS: We performed a post hoc, qualitative analysis of free-text responses from a survey of burnout prevalence in RTs. RESULTS: There were 1,114 total and 220 free-text responses. Five overarching themes emerged from the analysis: staffing, workload, physical/emotional consequences, lack of effective leadership, and lack of respect. Respondents discussed feelings of anxiety, depression, and compassion fatigue as well as concerns that lack of adequate staffing, high workload assignments, and inadequate support from leadership contributed to feelings of burnout. Specific instances of higher patient acuity, surge in critically ill patients, rapidly evolving changes in treatment recommendations, and minimal training and preparation for an extended scope of practice were reported as stressors that led to burnout. Some respondents stated that they felt a lack of respect for both the RT profession and the contribution of RTs to patient care. CONCLUSIONS: Themes associated with burnout in RTs included staffing, workload, physical and emotional exhaustion, lack of effective leadership, and lack of respect. These results provide potential targets for interventions to combat burnout among RTs.

Well-Being Among Respiratory Therapists in an Academic Medical Center During the COVID-19 Pandemic.

BACKGROUND: Recent studies have revealed high rates of burnout among respiratory therapists (RTs), which has implications for patient care and outcomes as well as for the health care workforce. We sought to better understand RT well-being during the COVID-19 pandemic. The purpose of this study was to determine rates and identify determinants of well-being, including burnout and professional fulfillment, among RTs in ICUs. METHODS: We conducted a mixed-methods study comprised of a survey administered quarterly from July 2020-May 2021 to critical-care health care professionals and semi-structured interviews from April-May 2021 with 10 ICU RTs within a single health center. We performed multivariable analyses to compare RT well-being to other professional groups and to evaluate changes in well-being over time. We analyzed qualitative interview data using thematic analysis, followed by mapping themes to the Maslow needs hierarchy. RESULTS: One hundred eight RTs responded to at least one quarterly survey. Eighty-two (75%) experienced burnout; 39 (36%) experienced professional fulfillment, and 62 (58%) reported symptoms of depression. Compared to clinicians of other professions in multivariable analyses, RTs were significantly more likely to experience burnout (odds ratio 2.32 [95% CI 1.41-3.81]) and depression (odds ratio 2.73 [95% CI 1.65-4.51]) and less likely to experience fulfillment (odds ratio 0.51 [95% CI 0.31-0.85]). We found that staffing challenges, safety concerns, workplace conflict, and lack of work-life balance led to burnout. Patient care, use of specialized skills, appreciation and a sense of community at work, and purpose fostered professional fulfillment. Themes identified were mapped to Maslow's hierarchy of needs; met needs led to professional fulfillment, and unmet needs led to burnout. CONCLUSIONS: ICU RTs experienced burnout during the pandemic at rates higher than other professions. To address RT needs, institutions should design and implement strategies to reduce burnout across all levels.

Factors Associated With a Positive View of Respiratory Care Leadership.

BACKGROUND: Burnout within health care is prevalent, and its effects are detrimental to patient outcomes, organizations, and individuals. Effects stemming from burnout include anxiety, depression, excessive alcohol and drug use, cardiovascular problems, time off work, and worse patient outcomes. Published data have suggested up to 50% of health care workers experience burnout and 79% of respiratory therapists (RTs) experience burnout. Leadership has been cited as a key driver of burnout among RTs. We aimed to identify factors associated with a positive or negative leadership perception. METHODS: A post hoc analysis of an institutional review board-approved survey to evaluate RT burnout, administered via REDCap by convenience sample to 26 health care centers (3,124 potential respondents) from January 17-March 15, 2021, was performed to identify factors associated with a positive view of leadership. Survey questions included validated tools to measure leadership, burnout, staffing, COVID-19 exposure, and demographics. Data analysis was descriptive, and logistic regression was performed to evaluate factors associated with leadership perception. RESULTS: Of 1,080 respondents, 710 (66%) had a positive view of leadership. Univariate analysis revealed those with a positive view of leadership were more likely to be working with adequate staffing, were rarely unable to complete all work, were less likely to be burned out, disagreed that people in this work environment were burned out, were less likely to miss work for any reason, more likely to be in a leadership position, worked fewer hours in intensive care, worked in a center affiliated with a medical school, worked day shift, were less likely to care for adult patients, and were more likely to be male. Logistic regression revealed providing care to patients with COVID-19 (odds ratio [OR] 5.8-10.5, P < .001-.006) was the only factor associated with a positive view of leadership, whereas working without adequate staffing (OR 0.27-0.28, P = .002-.006), staff RTs (OR 0.33, P < .001), work environment (OR 0.42, P = .003), missing work for any reason (OR 0.69, P = .003), and burnout score (OR 0.98, P < .001) were associated with a negative view of leadership. CONCLUSIONS: Most RTs had a positive view of their leadership. A negative leadership score was associated with higher burnout and missing work. This relationship requires further investigation to evaluate if changes in leadership practices can improve employee well-being and reduce burnout.

Improving Students' Knowledge and Skills Through a Tele-ICU Clinical Rotation.

BACKGROUND: In the course of their education, respiratory therapy students participate in clinical rotations, which are essential to their education. Recently, the number of clinical sites has decreased as some have been eliminated. During the COVID-19 pandemic, schools were challenged to find hospitals to accommodate students due to the risk of infection. Tele-ICU has emerged as a means for staff therapists to assess and monitor patients via remote monitoring systems. We hypothesized that a clinical rotation at a tele-ICU would strengthen students' knowledge of mechanical ventilation, telemedicine, and COVID-19. METHODS: In this study, students completed clinical rotations in a tele-ICU. Students spent two 4-h clinical rotations rounding on 320 ICU beds at 5 hospitals. Under the supervision of experienced therapists, students performed remote patient-ventilator assessments, including review and interpretation of ventilator waveforms, patient-ventilator interaction, arterial blood gases, and chest x-rays. Students completed pre- and post-rotation surveys assessing their confidence managing mechanical ventilation, experience with telemedicine, ARDS, and patients with COVID-19. RESULTS: Mean self-confidence in mechanical ventilation (P = .001), assessing waveforms (P = .001), and knowledge of ARDS increased after the clinical rotation (P = .001). Similarly, reported knowledge related to spontaneous breathing trial protocols (P = .009), lung-protective ventilation (P = .002), patient care planning (P = .001), and use of Excel spreadsheets (P = .002) increased from the beginning to the end of the clinical rotation. Student confidence in interprofessional communication increased from 85 [69-98] to 95 [78-100]; P = .03). Overall, the largest change was students' ability to assess patients with COVID-19 (pre-rotation 50.0 [11.5-65.7], post-rotation 80.0 [58.5-100]; P = .001). Qualitative results revealed overwhelmingly positive results for both students and preceptors. CONCLUSIONS: Students' confidence in assessing patients via remote monitoring increased in a tele-ICU clinical rotation. Self-assessed knowledge related to COVID-19 also increased to statistical significance.

Defining Physiological Decompensation: An Expert Consensus and Retrospective Outcome Validation.

OBJECTIVES: Physiological decompensation of hospitalized patients is common and is associated with substantial morbidity and mortality. Research surrounding patient decompensation has been hampered by the absence of a robust definition of decompensation and lack of standardized clinical criteria with which to identify patients who have decompensated. We aimed to: 1) develop a consensus definition of physiological decompensation and 2) to develop clinical criteria to identify patients who have decompensated. DESIGN: We utilized a three-phase, modified electronic Delphi (eDelphi) process, followed by a discussion round to generate consensus on the definition of physiological decompensation and on criteria to identify decompensation. We then validated the criteria using a retrospective cohort study of adult patients admitted to the Hospital of the University of Pennsylvania. SETTING: Quaternary academic medical center. PATIENTS: Adult patients admitted to the Hospital of the University of Pennsylvania who had triggered a rapid response team (RRT) response between January 1, 2019, and December 31, 2020. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: Sixty-nine experts participated in the eDelphi. Participation was high across the three survey rounds (first round: 93%, second round: 94%, and third round: 98%). The expert panel arrived at a consensus definition of physiological decompensation, "An acute worsening of a patient's clinical status that poses a substantial increase to an individual's short-term risk of death or serious harm." Consensus was also reached on criteria for physiological decompensation. Invasive mechanical ventilation, severe hypoxemia, and use of vasopressor or inotrope medication were bundled as criteria for our novel decompensation metric: the adult inpatient decompensation event (AIDE). Patients who met greater than one AIDE criteria within 24 hours of an RRT call had increased adjusted odds of 7-day mortality (adjusted odds ratio [aOR], 4.1 [95% CI, 2.5-6.7]) and intensive care unit transfer (aOR, 20.6 [95% CI, 14.2-30.0]). CONCLUSIONS: Through the eDelphi process, we have reached a consensus definition of physiological decompensation and proposed clinical criteria with which to identify patients who have decompensated using data easily available from the electronic medical record, the AIDE criteria.

The Rapid Implementation of Ad Hoc Tele-Critical Care Respiratory Therapy (eRT) Service in the Wake of the COVID-19 Surge.

A 24/7 telemedicine respiratory therapist (eRT) service was set up as part of the established University of Pennsylvania teleICU (PENN E-LERT®) service during the COVID-19 pandemic, serving five hospitals and 320 critical care beds to deliver effective remote care in lieu of a unit-based RT. The eRT interventions were components of an evidence-based care bundle and included ventilator liberation protocols, low tidal volume protocols, tube patency, and an extubation checklist. In addition, the proactive rounding of patients, including ventilator checks, was included. A standardized data collection sheet was used to facilitate the review of medical records, direct audio-visual inspection, or direct interactions with staff. In May 2020, a total of 1548 interventions took place, 93.86% of which were coded as "routine" based on established workflows, 4.71% as "urgent", 0.26% "emergent", and 1.17% were missing descriptors. Based on the number of coded interventions, we tracked the number of COVID-19 patients in the system. The average intervention took 6.1 ± 3.79 min. In 16% of all the interactions, no communication with the bedside team took place. The eRT connected with the in-house respiratory therapist (RT) in 66.6% of all the interventions, followed by house staff (9.8%), advanced practice providers (APP; 2.8%), and RN (2.6%). Most of the interaction took place over the telephone (88%), secure text message (16%), or audio-video telemedicine ICU platform (1.7%). A total of 5115 minutes were spent on tasks that a bedside clinician would have otherwise executed, reducing their exposure to COVID-19. The eRT service was instrumental in several emergent and urgent critical interventions. This study shows that an eRT service can support the bedside RT providers, effectively monitor best practice bundles, and carry out patient-ventilator assessments. It was effective in certain emergent situations and reduced the exposure of RTs to COVID-19. We plan to continue the service as part of an integrated RT service and hope to provide a framework for developing similar services in other facilities.

AARC Clinical Practice Guideline: Management of Adult Patients With Oxygen in the Acute Care Setting.

Providing supplemental oxygen to hospitalized adults is a frequent practice and can be administered via a variety of devices. Oxygen therapy has evolved over the years, and clinicians should follow evidence-based practices to provide maximum benefit and avoid harm. This systematic review and subsequent clinical practice guidelines were developed to answer questions about oxygenation targets, monitoring, early initiation of high-flow oxygen (HFO), benefits of HFO compared to conventional oxygen therapy, and humidification of supplemental oxygen. Using a modification of the RAND/UCLA Appropriateness Method, 7 recommendations were developed to guide the delivery of supplemental oxygen to hospitalized adults: (1) aim for [Formula: see text] range of 94-98% for most hospitalized patients (88-92% for those with COPD), (2) the same [Formula: see text] range of 94-98% for critically ill patients, (3) promote early initiation of HFO, (4) consider HFO to avoid escalation to noninvasive ventilation, (5) consider HFO immediately postextubation to avoid re-intubation, (6) either HFO or conventional oxygen therapy may be used with patients who are immunocompromised, and (7) consider humidification for supplemental oxygen when flows > 4 L/min are used.

Are investigators' access to trial data and rights to publish restricted and are potential trial participants informed about this? A comparison of trial protocols and informed consent materials.

OBJECTIVES: To determine to which degree industry partners in randomised clinical trials own the data and can constrain publication rights of academic investigators. METHODS: Cohort study of trial protocols, publication agreements and other documents obtained through Freedom of Information requests, for a sample of 42 trials with industry involvement approved by ethics committees in Denmark. The main outcome measures used were: proportion of trials where data was owned by the industry partner, where the investigators right to publish were constrained and if this was mentioned in informed consent documents, and where the industry partner could review data while the trial was ongoing and stop the trial early. RESULTS: The industry partner owned all data in 20 trials (48%) and in 16 trials (38%) it was unclear. Publication constraints were described for 30 trials (71%) and this was not communicated to trial participants in informed consent documents in any of the trials. In eight trials (19%) the industry partner could review data during the trial, for 20 trials (48%) it was unclear. The industry partner could stop the trial early without any specific reason in 23 trials (55%). CONCLUSIONS: Publication constraints are common, and data is often owned by industry partners. This is rarely communicated to trial participants. Such constraints might contribute to problems with selective outcome reporting. Patients should be fully informed about these aspects of trial conduct.

Prevalence of Burnout Among Respiratory Therapists Amidst the COVID-19 Pandemic.

Background: Burnout is a major challenge in health care, but its prevalence has not been evaluated in practicing respiratory therapist (RTs). The purpose of this study was to identify RT burnout prevalence and factors associated with RT burnout.Methods: An online survey was administered to 26 centers in the United States and between January and March 2021. Validated, quantitative, cross-sectional surveys were used to measure burnout and leadership domains. The survey was sent to department directors and distributed by the department directors to staff. Data analysis was descriptive and logistic regression analysis was performed to evaluate risk factors, expressed as odds ratios (OR), for burnout.Results: The survey was distributed to 3,010 RTs, and the response rate was 37%. Seventy-nine percent of respondents reported burnout, 10% with severe, 32% with moderate, and 37% with mild burnout. Univariate analysis revealed those with burnout worked more hours per week, worked more hours per week in the ICU, primarily cared for adult patients, primarily delivered care via RT protocols, reported inadequate RT staffing, reported being unable to complete assigned work, were more frequently exposed to COVID-19, had a lower leadership score, and fewer had a positive view of leadership. Logistic regression revealed burnout climate (OR 9.38, p<0.001), inadequate RT staffing (OR 2.08 to 3.19, p=0.004 to 0.05), being unable to complete all work (OR 2.14 to 5.57, p=0.003 to 0.20), and missing work for any reason were associated with increased risk of burnout (OR 1.96, p=0.007). Not providing patient care (OR 0.18, p=0.02) and a positive leadership score (0.55, p=0.02) were associated with decreased risk of burnout.Conclusion: Burnout was common among RTs in the midst of the COVID-19 pandemic. Good leadership was protective against burnout while inadequate staffing, inability to complete work, and burnout climate were associated with burnout.

Resilience and Burnout Resources in Respiratory Care Departments.

BACKGROUND: Burnout is a major problem in health care, with rates of approximately 33% and 50% in nurses and physicians, respectively, prior to the COVID-19 pandemic. Respiratory therapist (RT) burnout rates and drivers have not been specifically examined. The purpose of this project was to determine resilience and burnout resources available within respiratory care departments and to provide an estimate of pre- and post-COVID-19 RT burnout rates. METHODS: A survey was developed to evaluate resilience and burnout resources in respiratory care departments. The survey was posted online to the AARConnect management, education, adult acute care, neonatal/pediatrics, COVID-19, and help line communities. Data analysis was descriptive. Key drivers of burnout among RTs were identified from qualitative answers. RESULTS: There were 221 responses, and 72% reported experiencing burnout. Ten percent of the departments that responded measured burnout; 36% utilized resilience tools, and 83% offered free employee assistance for those struggling with burnout. In January 2020, 30% of departments reported an estimated burnout rate > 40%, which increased to 44% of departments (P = .007) in the COVID-19 pandemic period. The most common drivers reported were poor leadership (32%), high work load (31%), and staffing (29%); 93% of respondents agreed that burnout is a major problem in health care, 33% agreed that burnout is primarily driven by external factors, 92% agreed that RTs have a similar risk of burnout as other health care professionals, 73% agreed that they were comfortable discussing challenging situations with colleagues, 32% agreed that their leadership provided adequate support for those suffering from burnout, and 79% agreed that they would be open to utilizing resilience tools from the AARC or other professional organizations. CONCLUSIONS: Most respondents experienced burnout and few respiratory care departments measured burnout. Resilience resources were not commonly used but employee assistance and wellness programs were common. Key drivers of burnout identified were poor leadership, staffing, and high workloads.

Evaluation of Respiratory Therapist Extender Comfort With Mechanical Ventilation During COVID-19 Pandemic.

BACKGROUND: Staffing strategies used to meet the needs of respiratory care departments during the COVID-19 pandemic included the deployment of respiratory therapist extenders. The purpose of this study was to evaluate respiratory therapist extenders' comfort level with critical care ventilators while caring for patients with COVID-19. To our knowledge, this is the first study to evaluate the deployment of certified registered nurse anesthetists (CRNAs) in a critical care setting. METHODS: A qualitative survey method was used to assess CRNA experience with critical care ventilators. Prior to deployment in the ICU, CRNAs were trained by clinical lead respiratory therapists. Education included respiratory clinical practices and ventilator management. Sixty-minute sessions were held with demonstration stations set up in ICUs for hands-on experience. RESULTS: Fifty-six CRNAs responded to our survey (63%). A mean ± SD of 9.48 ± 12.27 h was spent training prior to deployment in the ICU. CRNAs were at the bedside a mean ± SD of 73.0 ± 40.6 h during the pandemic. While CRNA comfort level with critical care ventilators increased significantly (P < .001) from the beginning to the end of their work experience, no statistically significant differences were found between CRNA comfort based on years of experience. Differences in comfort level were not found after training (chi-squared test 23.82, P = .09) or after ICU experience was completed (chi-squared test = 15.99, P = .45). Similarly, mean comfort level did not increase based on the number of hours spent working in the ICU (chi-squared test = 13.67, P = .55). CONCLUSIONS: Comfort level with mechanical ventilation increased for CRNAs working alongside respiratory therapists during the COVID-19 pandemic.

Association between conflicts of interest and favourable recommendations in clinical guidelines, advisory committee reports, opinion pieces, and narrative reviews: systematic review.

OBJECTIVE: To investigate the association between conflicts of interest and favourable recommendations in clinical guidelines, advisory committee reports, opinion pieces, and narrative reviews. DESIGN: Systematic review. ELIGIBILITY CRITERIA: Studies that compared the association between conflicts of interest and favourable recommendations of drugs or devices (eg, recommending a drug) in clinical guidelines, advisory committee reports, opinion pieces (eg, editorials), or narrative reviews. DATA SOURCES: PubMed, Embase, Cochrane Methodology Register (from inception to February 2020), reference lists, Web of Science, and grey literature. DATA EXTRACTION AND ANALYSIS: Two authors independently extracted data and assessed the methodological quality of the studies. Pooled relative risks and 95% confidence intervals were estimated using random effects models (relative risk >1 indicates that documents with conflicts of interest more often had favourable recommendations than documents with no conflicts of interest). Financial and non-financial conflicts of interest were analysed separately, and the four types of documents were analysed separately (preplanned) and combined (post hoc). RESULTS: 21 studies that analysed 106 clinical guidelines, 1809 advisory committee reports, 340 opinion pieces, and 497 narrative reviews were included. Unpublished data were received for 11 studies (eight full datasets and three summary datasets). 15 studies showed risk of confounding because the compared documents could differ in factors other than conflicts of interest (eg, different drugs used for different populations). The relative risk for associations between financial conflicts of interest and favourable recommendations for clinical guidelines was 1.26 (95% confidence interval 0.93 to 1.69; four studies of 86 clinical guidelines), for advisory committee reports was 1.20 (0.99 to 1.45; four studies of 629 advisory committee reports), for opinion pieces was 2.62 (0.91 to 7.55; four studies of 284 opinion pieces), and for narrative reviews was 1.20 (0.97 to 1.49; four studies of 457 narrative reviews). An analysis of all four types of documents combined supported these findings (1.26, 1.09 to 1.44). In one study that investigated specialty interests, the association between including radiologists as authors of guidelines and recommending routine breast cancer was: relative risk 2.10, 95% confidence interval 0.92 to 4.77; 12 clinical guidelines). CONCLUSIONS: We interpret our findings to indicate that financial conflicts of interest are associated with favourable recommendations of drugs and devices in clinical guidelines, advisory committee reports, opinion pieces, and narrative reviews. Limitations of this review were risk of confounding in the included studies and the statistical imprecision of individual analyses of each document type. It is not certain whether non-financial conflicts of interest influence recommendations. SYSTEMATIC REVIEW REGISTRATION: Cochrane Methodology Review Protocol MR000040.