Age and its impact on crisis management performance and learning after simulation-based education by acute care physicians: a multicentre prospective cohort study.

BACKGROUND: Physiological changes associated with ageing could negatively impact the crisis resource management skills of acute care physicians. This study was designed to determine whether physician age impacts crisis resource management skills, and crisis resource management skills learning and retention using full-body manikin simulation training in acute care physicians. METHODS: Acute care physicians at two Canadian universities participated in three 8-min simulated crisis (pulseless electrical activity) scenarios. An initial crisis scenario (pre-test) was followed by debriefing with a trained facilitator and a second crisis scenario (immediate post-test). Participants returned for a third crisis scenario 3-6 months later (retention post-test). RESULTS: For the 48 participants included in the final analysis, age negatively correlated with baseline Global Rating Scale (GRS; r=-0.30, P<0.05) and technical checklist scores (r=-0.44, P<0.01). However, only years in practice and prior simulation experience, but not age, were significant in a subsequent stepwise regression analysis. Learning from simulation-based education was shown with a mean difference in scores from pre-test to immediate post-test of 2.28 for GRS score (P<0.001) and 1.69 for technical checklist correct score (P<0.001); learning was retained for 3-6 months. Only prior simulation experience was significantly correlated with a decreased change in learning (r=-0.30, P<0.05). CONCLUSIONS: A reduced amount of prior simulation training and increased years in practice, but not age on its own, were significant predictors of low baseline crisis resource management performance. Simulation-based education leads to crisis resource management learning that is well retained for 3-6 months, regardless of age or years in practice.

E-learning optimization: the relative and combined effects of mental practice and modeling on enhanced podcast-based learning-a randomized controlled trial.

Enhanced podcasts increase learning, but evidence is lacking on how they should be designed to optimize their effectiveness. This study assessed the impact two learning instructional design methods (mental practice and modeling), either on their own or in combination, for teaching complex cognitive medical content when incorporated into enhanced podcasts. Sixty-three medical students were randomised to one of four versions of an airway management enhanced podcast: (1) control: narrated presentation; (2) modeling: narration with video demonstration of skills; (3) mental practice: narrated presentation with guided mental practice; (4) combined: modeling and mental practice. One week later, students managed a manikin-based simulated airway crisis. Knowledge acquisition was assessed by baseline and retention multiple-choice quizzes. Two blinded raters assessed all videos obtained from simulated crises to measure the students' skills using a key-elements scale, critical error checklist, and the Ottawa global rating scale (GRS). Baseline knowledge was not different between all four groups (p = 0.65). One week later, knowledge retention was significantly higher for (1) both the mental practice and modeling group than the control group (p = 0.01; p = 0.01, respectively) and (2) the combined mental practice and modeling group compared to all other groups (all ps = 0.01). Regarding skills acquisition, the control group significantly under-performed in comparison to all other groups on the key-events scale (all ps ≤ 0.05), the critical error checklist (all ps ≤ 0.05), and the Ottawa GRS (all ps ≤ 0.05). The combination of mental practice and modeling led to greater improvement on the key events checklist (p = 0.01) compared to either strategy alone. However, the combination of the two strategies did not result in any further learning gains on the two other measures of clinical performance (all ps > 0.05). The effectiveness of enhanced podcasts for knowledge retention and clinical skill acquisition is increased with either mental practice or modeling. The combination of mental practice and modeling had synergistic effects on knowledge retention, but conveyed less clear advantages in its application through clinical skills.

Creating learning momentum through overt teaching interactions during real acute care episodes.

Clinical supervisors fulfill a dual responsibility towards patient care and learning during clinical activities. Assuming such roles in today's clinical environments may be challenging. Acute care environments present unique learning opportunities for medical trainees, as well as specific challenges. The goal of this paper was to better understand the specific contexts in which overt teaching interactions occurred in acute care environments. We conducted a naturalistic observational study based on constructivist grounded theory methodology. Using participant observation, we collected data on the teaching interactions occurring between clinical supervisors and medical trainees during 74 acute care episodes in the critical care unit of two academic centers, in Toronto, Canada. Three themes contributed to a better understanding of the conditions in which overt teaching interactions among trainees and clinical supervisors occurred during acute care episodes: seizing emergent learning opportunities, coming up against challenging conditions, and creating learning momentum. Our findings illustrate how overt learning opportunities emerged from certain clinical situations and how clinical supervisors and trainees could purposefully modify unfavorable learning conditions. None of the acute care episodes encountered in the critical care environment represented ideal conditions for learning. Yet, clinical supervisors and trainees succeeded in engaging in overt teaching interactions during many episodes. The educational value of these overt teaching interactions should be further explored, as well as the impact of interventions aimed at increasing their use in acute care environments.

Predictable chaos: a review of the effects of emotions on attention, memory and decision making.

Healthcare practice and education are highly emotional endeavors. While this is recognized by educators and researchers seeking to develop interventions aimed at improving wellness in health professionals and at providing them with skills to deal with emotional interpersonal situations, the field of health professions education has largely ignored the role that emotions play on cognitive processes. The purpose of this review is to provide an introduction to the broader field of emotions, with the goal of better understanding the integral relationship between emotions and cognitive processes. Individuals, at any given time, are in an emotional state. This emotional state influences how they perceive the world around them, what they recall from it, as well as the decisions they make. Rather than treating emotions as undesirable forces that wreak havoc on the rational being, the field of health professions education could be enriched by a greater understanding of how these emotions can shape cognitive processes in increasingly predictable ways.

Clinical supervision and learning opportunities during simulated acute care scenarios.

CONTEXT: Closer clinical supervision has been increasingly promoted to improve patient care. However, the continuous bedside presence of supervisors may threaten the model of progressive independence traditionally associated with effective clinical training. Studies have shown favourable effects of closer supervision on trainees' learning, but have not paid specific attention to the learning processes involved. METHODS: We conducted a simulation-based study to explore the learning opportunities created during simulated resuscitation scenarios under different levels of supervision. Fifty-three residents completed a supervised scenario. Residents were randomised to one of three levels of supervision: telephone (distant); in-person after telephone consultation (immediately available), and in-person from the beginning of the simulation (direct). These interactions were converted into 234 pages of transcripts for analysis. We performed an inductive thematic analysis followed by a deductive analysis using situated learning theory as a theoretical framework. RESULTS: Learning opportunities created during simulated scenarios were identified as belonging to either of two categories, incidental and engineered opportunities. The themes resulting from this framework contributed to our understanding of trainees' contributions to patient care, supervisors' influences on patient care, and trainee-supervisor interactions. All forms of supervision offered trainees incidental opportunities for practice, although the nature of these contributions could be affected by the bedside presence of supervisors. Supervisors' involvement in patient care by telephone and in person was associated with a shift of responsibility for patient care, but represented, respectively, engineered and incidental opportunities for observation. In-person supervisor-trainee interactions added value to observation and created additional opportunities for incidental feedback and engineered practice. CONCLUSIONS: The shift of responsibility for patient care occurred during both direct and distant supervision, and did not necessarily translate into a lack of opportunities for trainee participation and practice.

Simulation-based assessment of paramedics and performance in real clinical contexts.

OBJECTIVE: The objective of this study was to seek validity evidence for simulation-based assessments (SBA) of paramedics by asking to what extent the measurements obtained in SBA of clinical competence are associated with measurements obtained in actual paramedic contexts, with real patients. METHODS: This prospective observational study involved analyzing the assessment of paramedic trainees at the entry-to-practice level in both simulation- and workplace-based settings. The SBA followed an OSCE structure involving full clinical cases from initial patient contact to transport or transfer of care. The workplace-based assessment (WBA) involved rating samples of clinical performance during real clinical encounters while assigned to an emergency medical service. For each candidate, both assessments were completed during a 3-week period at the end of their training. Raters in the SBA and WBA settings used the same paramedic-specific seven-dimension global rating scale. Reliability was calculated and decision studies were completed using generalizability theory. Associations between settings (overall and by dimension) were calculated using Pearson's correlation. RESULTS: A total of 49 paramedic trainees were assessed using both a SBA and WBA. The mean score in the SBA and WBA settings were 4.88 (SD = 0.68) and 5.39 (SD = 0.48), respectively, out of a possible 7. Reliability for the SBA and WBA settings reached 0.55 and 0.49, respectively. A decision study revealed 10 and 13 cases would be needed to reach a reliability of 0.7 for the SBA and WBA settings. Pearson correlation reached 0.37 (p = 0.01) between settings, which rose to 0.73 when controlling for imperfect reliability; five of seven dimensions (situation awareness, history gathering, patient assessment, decision making, and communication) reaching significance. Two dimensions (resource utilization and procedural skills) did not reach significance. CONCLUSION: For five of the seven dimensions believed to represent the construct of paramedic clinical performance, scores obtained in the SBA were associated with scores obtained in real clinical contexts with real patients. As SBAs are often used to infer clinical competence and predict future clinical performance, this study contributes validity evidence to support these claims as long as the importance of sampling performance broadly and extensively is appreciated and implemented.

Interventions to reduce the consequences of stress in physicians: a review and meta-analysis.

A significant proportion of physicians and medical trainees experience stress-related anxiety and burnout resulting in increased absenteeism and disability, decreased patient satisfaction, and increased rates of medical errors. A review and meta-analysis was conducted to examine the effectiveness of interventions aimed at addressing stress, anxiety, and burnout in physicians and medical trainees. Twelve studies involving 1034 participants were included in three meta-analyses. Cognitive, behavioral, and mindfulness interventions were associated with decreased symptoms of anxiety in physicians (standard differences in means [SDM], -1.07; 95% confidence interval [CI], -1.39 to -0.74) and medical students (SDM, -0.55; 95% CI, -0.74 to -0.36). Interventions incorporating psychoeducation, interpersonal communication, and mindfulness meditation were associated with decreased burnout in physicians (SDM, -0.38; 95% CI, -0.49 to -0.26). Results from this review and meta-analysis provide support that cognitive, behavioral, and mindfulness-based approaches are effective in reducing stress in medical students and practicing physicians. There is emerging evidence that these models may also contribute to lower levels of burnout in physicians.

Impact of acute stress on resident performance during simulated resuscitation episodes: a prospective randomized cross-over study.

BACKGROUND: Medical trainees have identified stress as an important contributor to their medical errors in acute care environments. PURPOSES: The objective of this study was to determine if the addition of acute stressors to simulated resuscitation scenarios would impact on residents' simulated clinical performance. METHODS: Fifty-four residents completed a control and a high-stress simulated scenario on separate visits. Stress measures were collected before and after scenarios. Two assessors independently evaluated residents' videotaped performance. RESULTS: Both control and high-stress scenarios triggered significant stress responses among participants; however, stress responses were not significantly different between control and high-stress conditions. No difference in performance was found between control and high-stress conditions (F value = 2.84, p = .098). CONCLUSIONS: Residents exposed to simulated resuscitation scenarios experienced significant stress responses irrespective of the presence of acute stressors during these scenarios. This anticipatory stressful response could impact on resident learning and performance and should be further explored.

Effects of clinical supervision on resident learning and patient care during simulated ICU scenarios.

OBJECTIVES: Closer supervision of residents' clinical activities has been promoted to improve patient safety, but may additionally affect resident participation in patient care and learning. The objective of this study was to determine the effects of closer supervision on patient care, resident participation, and the development of resident ability to care independently for critically ill patients during simulated scenarios. DESIGN: This quantitative study represents a component of a larger mixed-methods study. Residents were randomized to one of three levels of supervision, defined by the physical proximity of the supervisor (distant, immediately available, and direct). Each resident completed a simulation scenario under the supervision of a critical care fellow, immediately followed by a modified scenario of similar content without supervision. SETTING: The simulation center of a tertiary, university-affiliated academic center in a large urban city. SUBJECTS: Fifty-three residents completing a critical care rotation and 24 critical care fellows were recruited between April 2009 and June 2010. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: During the supervised scenarios, lower team performance checklist scores were obtained for distant supervision compared with immediately available and direct supervision (mean [SD], direct: 72% [12%] vs immediately available: 77% [10%] vs distant: 61% [11%]; p = 0.0013). The percentage of checklist items completed by the residents themselves was significantly lower during direct supervision (median [interquartile range], direct: 40% [21%] vs immediately available: 58% [16%] vs distant: 55% [11%]; p = 0.005). During unsupervised scenarios, no significant differences were found on the outcome measures. CONCLUSIONS: Care delivered in the presence of senior supervising physicians was more comprehensive than care delivered without access to a bedside supervisor, but was associated with lower resident participation. However, subsequent resident performance during unsupervised scenarios was not adversely affected. Direct supervision of residents leads to improved care process and does not diminish the subsequent ability of residents to function independently.

Review article: simulation in anesthesia: state of the science and looking forward.

PURPOSE: Within the field of anesthesia, simulation has been used as a tool for training and assessment for over 30 years. The purpose of this review is to evaluate the state of the science in terms of its effectiveness as an approach to both training and assessment in anesthesia. Articles in the area of simulation and anesthesia published up to and including 2011 were reviewed for inclusion in this narrative review. PRINCIPAL FINDINGS: Simulation-based training is generally well received by participants, it can lead to improved performance in subsequent simulation events, and some transfer of learning to the clinical setting is evident. There is also some early evidence that well-designed performance assessments could have the required reliability and validity to support high-stakes examinations. However, further work is needed in order to set standards and establish the predictive validity to support such assessments. CONCLUSION: For simulation to realize its potential impact, further research is needed to understand how to optimize this modality of learning more effectively, how to transfer knowledge of research findings to practice, and also how to broaden the simulation modalities used in anesthesia. In future, the optimal use of simulation will depend on a clear understanding of what can and cannot be accomplished with simulation and its various modalities.

The impact of stress on paramedic performance during simulated critical events.

OBJECTIVES: Substantial research demonstrates that the stressors accompanying the profession of paramedicine can lead to mental health concerns. In contrast, little is known about the effects of stress on paramedics' ability to care for patients during stressful events. In this study, we examined paramedics' acute stress responses and performance during simulated high-stress scenarios. METHODS: Twenty-two advanced care paramedics participated in simulated low-stress and high-stress clinical scenarios. The paramedics provided salivary cortisol samples and completed an anxiety questionnaire at baseline and following each scenario. Clinical performance was videotaped and scored on a checklist of specific actions and a global rating of performance. The paramedics also completed patient care documentation following each scenario. RESULTS: The paramedics demonstrated greater increases in anxiety (P < .05) and salivary cortisol levels (P < .05) in response to the high-stress scenario compared to the low-stress scenario. Global rating scores were significantly lower in the high-stress scenario than in the low-stress scenario (P < .05). Checklist scores were not significantly different between the two scenarios (P = .12). There were more errors of commission (reporting information not present in the scenario) in the patient care documentation following the high-stress scenario than following the low-stress scenario (P < .05). In contrast, there were no differences in omission errors (failing to recall information present in the scenario) between the two scenarios (P = .34). CONCLUSION: Clinical performance and documentation appear vulnerable to the impact of acute stress. This highlights the importance of developing systems and training interventions aimed at supporting and preparing emergency workers who face acute stressors as part of their every day work responsibilities.

Emotions in simulation-based education: friends or foes of learning?

In simulation-based education, there is growing interest in the effects of emotions on learning from simulation sessions. The perception that emotions have an important impact on performance and learning is supported by the literature. Emotions are pervasive: at any given moment, individuals are in one emotional state or another. Emotions are also powerful: they guide ongoing cognitive processes in order to direct attention, memory and judgment towards addressing the stimulus that triggers the emotion. This occurs in a predictable way. The purpose of this paper is to present a narrative overview of the research on emotions, cognitive processes and learning, in order to inform the simulation community of the potential role of emotions during simulation-based education.

Wrestling With the Invincibility Myth: Exploring Physicians' Resistance to Wellness and Resilience-Building Interventions.

PURPOSE: Physicians are expected to provide compassionate, error-free care while navigating systemic challenges and organizational demands. Many are burning out. While organizations are scrambling to address the burnout crisis, physicians often resist interventions aimed at enhancing their wellness and building their resilience. The purpose of this research was to empirically study this phenomenon. METHOD: Constructivist grounded theory was used to inform the iterative data collection and analysis process. In spring 2018, 22 faculty physicians working in Canada participated in semistructured interviews to discuss their experiences of wellness and burnout, their perceptions of wellness initiatives, and how their experiences and perceptions influence their uptake of the rapidly proliferating strategies aimed at nurturing their resilience. Themes were identified using constant comparative analysis. RESULTS: Participants suggested that the values of compassion espoused by health care organizations do not extend to physicians, and they described feeling dehumanized by professional values steeped in an invincibility myth in which physicians are expected to be "superhuman" and "sacrifice everything" for medicine. Participants described that professional values and organizational norms impeded work-life balance, hindered personal and professional fulfillment, and discouraged disclosure of struggles. In turn, participants seemed to resist wellness and resilience-building interventions focused on fixing individuals rather than broader systemic, organizational, and professional issues. Participants perceived that efforts aimed at building individual resilience are futile without changes in professional values and sustained organizational support. CONCLUSIONS: Findings suggest that professional and organizational norms and expectations trigger feelings of dehumanization for some physicians. These feelings likely exacerbate burnout and may partly explain physicians' resistance to resilience-building strategies. Mitigating burnout and developing and sustaining a resilient physician workforce will require both individual resistance to problematic professional values and an institutional commitment to creating a culture of compassion for patients and physicians alike.

Simulation-based training improves physicians' performance in patient care in high-stakes clinical setting of cardiac surgery.

BACKGROUND: Simulation-based training is useful in improving physicians' skills. However, no randomized controlled trials have been able to demonstrate the effects of simulation teaching in real-life patient care. This study aimed to determine whether simulation-based training or an interactive seminar resulted in better patient care during weaning from cardiopulmonary bypass (CPB)-a high stakes clinical setting. METHODS: This study was conducted as a prospective, single-blinded, randomized controlled trial. After institutional research board approval, 20 anesthesiology trainees, postgraduate year 4 or higher, inexperienced in CPB weaning, and 60 patients scheduled for elective coronary artery bypass grafting were recruited. Each trainee received a teaching syllabus for CPB weaning 1 week before attempting to wean a patient from CPB (pretest). One week later, each trainee received a 2-h training session with either high-fidelity simulation-based training or a 2-h interactive seminar. Each trainee then weaned patients from CPB within 2 weeks (posttest) and 5 weeks (retention test) from the intervention. Clinical performance was measured using the validated Anesthesiologists' Nontechnical Skills Global Rating Scale and a checklist of expected clinical actions. RESULTS: Pretest Global Rating Scale and checklist performances were similar. The simulation group scored significantly higher than the seminar group at both posttest (Global Rating Scale [mean +/- standard error]: 14.3 +/- 0.41 vs. 11.8 +/- 0.41, P < 0.001; checklist: 89.9 +/- 3.0% vs. 75.4 +/- 3.0%, P = 0.003) and retention test (Global Rating Scale: 14.1 +/- 0.41 vs. 11.7 +/- 0.41, P < 0.001; checklist: 93.2 +/- 2.4% vs. 77.0 +/- 2.4%, P < 0.001). CONCLUSION: Skills required to wean a patient from CPB can be acquired through simulation-based training. Compared with traditional interactive seminars, simulation-based training leads to improved performance in patient care by senior trainees in anesthesiology.

Threat and challenge: cognitive appraisal and stress responses in simulated trauma resuscitations.

OBJECTIVES Training and practice in medicine are inherently stressful. Research into the effects of acute stressors has revealed significant variability in individual responses to stressors, with performance impairments occurring in those who demonstrate elevated subjective and physiological responses. Cognitive appraisals (subjective assessment of situational demands and available resources) of a stressor have been proposed as a predictor variable in stress responses. However, the relationship between cognitive appraisal and stress responses has not been tested empirically in complex realistic situations. The purpose of this study was to determine the extent to which cognitive appraisal affects a medical trainee's subjective and physiological stress responses to high-acuity simulated clinical situations. METHODS Thirteen emergency medicine and general surgery residents participated in high (HS) and low (LS) stress trauma resuscitation simulations. Subjective (cognitive appraisal and State-Trait Anxiety Inventory [STAI]) and physiological (salivary cortisol) measures were collected at baseline and in response to participation in each scenario. RESULTS Post-scenario STAI scores, cognitive appraisal and cortisol levels were higher in the HS scenario compared with the LS scenario. For the participants who appraised the scenarios as 'threats' (in which the demands outweighed the resources), the ratio of perceived demands to resources was positively correlated with cortisol levels (r = 0.59, p < 0.05) and STAI responses (r = 0.64, p < 0.05). By contrast, for the participants who appraised the scenarios as 'challenges' (in which resources were sufficient to meet the demands), the perceived ratio of demands to resources was not correlated with either the STAI scores or cortisol levels. CONCLUSIONS Subjective appraisals of a situation appear to play an important role in stress responses, which have previously been shown to impair performance. As such, training for high-acuity events should include interventions targeting stress management skills.

Stressful intensive care unit medical crises: How individual responses impact on team performance.

BACKGROUND: Intensive care units (ICUs) are recognized as stressful environments. However, the conditions in which stressors may affect health professionals' performance and well-being and the conditions that potentially lead to impaired performance and staff psychological distress are not well understood. OBJECTIVES: The purpose of this study was to determine healthcare professionals' perceptions regarding the factors that lead to stress responses and performance impairments during ICU medical crises. DESIGN: A qualitative study in a university-affiliated ICU in Canada. METHODOLOGY: We conducted 32 individual semistructured interviews of ICU nurses, staff physicians, residents, and respiratory therapists in a university-affiliated hospital. The transcripts of the audiotaped interviews were analyzed using an inductive thematic methodology. RESULTS: Increased workload, high stakes, and heavy weight of responsibility were recognized as common stressors during ICU crises. However, a high level of individual and team resources available to face such demands was also reported. When the patient's condition was changing or deteriorating unpredictably or when the expected resources were unavailable, crises were assessed by some team members as threatening, leading to individual distress. Once manifested, this emotional distress was strongly contagious to other team members. The ensuing collective anxiety was perceived as disruptive for teamwork and deleterious for individual and collective performance. CONCLUSIONS: Individual distress reactions to ICU crises occurred in the presence of unexpectedly high demands unmatched by appropriate resources and were contagious among other team members. Given the high uncertainty surrounding many ICU medical crises, strategies aimed at preventing distress contagion among ICU health professionals may improve team performance and individual well-being.

Personalized oral debriefing versus standardized multimedia instruction after patient crisis simulation.

BACKGROUND: Simulation experience alone without debriefing is insufficient for learning. Standardized multimedia instruction has been shown to be useful in teaching surgical skills but has not been evaluated for use as an adjunct in crisis management training. Our primary purpose in this study was to determine whether standardized computer-based multimedia instruction is effective for learning, and whether the learning is retained 5 wk later. Our secondary purpose was to compare multimedia instruction to personalized video-assisted oral debriefing with an expert. METHODS: Thirty anesthesia residents were recruited to manage three different simulated resuscitation scenarios using a high-fidelity patient simulator. After the first scenario, subjects were randomized to either a computer-based multimedia tutorial or a personal debriefing of their performance with an expert and videotape review. After their respective teaching, subjects managed a similar posttest resuscitation scenario and a third retention test scenario 5 wk later. Performances were independently rated by two blinded expert assessors using a previously validated assessment system. RESULTS: Posttest (12.22 +/- 2.19, P = 0.009) and retention (12.80 +/- 1.77, P < 0.001) performances of nontechnical skills were significantly improved in the standardized multimedia instruction group compared with pretest (10.27 +/- 2.10). There were no significant differences in improvement between the two methods of instruction. CONCLUSION: Computer-based multimedia instruction is an effective method of teaching nontechnical skills in simulated crisis scenarios and may be as effective as personalized oral debriefing. Multimedia may be a valuable adjunct to centers when debriefing expertise is not available.

Interprofessional intensive care unit team interactions and medical crises: a qualitative study.

Research has suggested that interprofessional collaboration could improve patient outcomes in the intensive care unit (ICU). Maintaining optimal interprofessional interactions in a setting where unpredictable medical crises occur periodically is however challenging. Our study aimed to investigate the perceptions of ICU health care professionals regarding how acute medical crises affect their team interactions. We conducted 25 semi-structured interviews of ICU nurses, staff physicians, and respiratory therapists. All interviews were audio-taped and transcribed, and the analysis was undertaken using an inductive thematic approach. Our data indicated that the nature of interprofessional interactions changed as teams passed through three key temporal periods around medical crises. During the "pre-crisis period", interactions were based on the mutual respect of each other's expertise. During the "crisis period", hierarchical interactions were expected and a certain lack of civility was tolerated. During the "post-crisis period", divergent perceptions emerged amongst health professionals. Post-crisis team dispersion left the nurses with questions and emotions not expressed by other team members. Nurses believed that systematic interprofessional feedback sessions held immediately after a crisis could address some of their needs. Further research is needed to establish the possible benefits of strategies addressing ICU health care professionals' specific needs for interprofessional feedback after a medical crisis.

Does the age of acute care physicians impact their (1) crisis management performance and (2) learning after simulation-based education? A protocol for a multicentre prospective cohort study in Toronto and Ottawa, Canada.

INTRODUCTION: The proportion of older acute care physicians (ACPs) has been steadily increasing. Ageing is associated with physiological changes and prospective research investigating how such age-related physiological changes affect clinical performance, including crisis resource management (CRM) skills, is lacking. There is a gap in the literature on whether physician's age influences baseline CRM performance and also learning from simulation. We aim to investigate whether ageing is associated with baseline CRM skills of ACPs (emergency, critical care and anaesthesia) using simulated crisis scenarios and to assess whether ageing influences learning from simulation-based education. METHODS AND ANALYSIS: This is a prospective cohort multicentre study recruiting ACPs from the Universities of Toronto and Ottawa, Canada. Each participant will manage an advanced cardiovascular life support crisis-simulated scenario (pretest) and then be debriefed on their CRM skills. They will then manage another simulated crisis scenario (immediate post-test). Three months after, participants will return to manage a third simulated crisis scenario (retention post-test). The relationship between biological age and chronological age will be assessed by measuring the participants CRM skills and their ability to learn from high-fidelity simulation. ETHICS AND DISSEMINATION: This protocol was approved by Sunnybrook Health Sciences Centre Research Ethics Board (REB Number 140-2015) and the Ottawa Health Science Network Research Ethics Board (#20150173-01H). The results will be disseminated in a peer-reviewed journal and at scientific meetings. TRIAL REGISTRATION NUMBER: NCT02683447; Pre-results.

Linear versus web-style layout of computer tutorials for medical student learning of radiograph interpretation.

RATIONALE AND OBJECTIVE: We sought to determine which is more effective in increasing skill in radiograph interpretation: a linear (PowerPoint-style) computer tutorial that locks the student into a fixed path through the material or a branched (Web-style) version that allows random access. MATERIALS AND METHODS: We prepared a computer tutorial for learning how to interpret cervical spine radiographs. The tutorial has 66 screens including radiographs or graphics on almost every page and five unknown radiographs for the student to interpret. One version (linear) presents the material in a linear sequence with the unknown radiographs heading up "chapters" detailing an important aspect of the task. In the second (branched) version, the same 66 screens were accessed through hyperlinks in a frame beside the unknown radiographs. One hundred thirty-nine medical students at two sites participated in a randomized single-blinded controlled experiment. They interpreted cervical spine images as a pretest and then completed one of the two tutorial versions. Afterward, they did the same examination as a post-test. RESULTS: The tutorial was successful, in both layouts, in improving the subjects' ability to interpret cervical spine radiograph images (effect size 2.1; 95% confidence interval 1.7-2.5). However, the layout did not make a difference to their gain in ability. Students in the linear group completed the tutorial in 17% less time (P < .001) but were slightly less likely to rate the tutorial as "valuable." CONCLUSION: For these novice learners, computer tutorial layout does not affect knowledge gain. Students may be more satisfied with the linear layout, but in time-pressured situations, the Web-style layout may be preferable because it is more efficient.