In this study, the authors designed checklists to guide care during operating-room crises and evaluated them in a simulated operating room. The availability of checklists improved adherence to best ...practices by operating-room teams during simulations of surgical crises.
Operating-room crises (e.g., massive hemorrhage and cardiac arrest) are high-risk, stressful events that require rapid and coordinated care in a time-critical setting. The reported incidence may be rare for an individual practitioner,
1
but the aggregate incidence for a hospital with 10,000 operations a year is estimated to be approximately 145 such events annually.
2
These are situations in which the way the team cares for a patient will make the difference between life and death. Failure to effectively manage life-threatening complications in surgical patients has been recognized as the largest source of variation in surgical mortality among hospitals.
3
–
7
Small-scale studies . . .
Up in the Air Loewenthal, Julia V; Vaidya, Anand; Duran, Brittany ...
The New England journal of medicine,
01/2022, Letnik:
386, Številka:
4
Journal Article, Reference
Recenzirano
This interactive case features a 58-year-old man who reports having crushing, substernal chest pain that starts immediately after a plane’s takeoff. Test your diagnostic and therapeutic skills at ...NEJM.org.
To examine whether a robotic surgical platform can complement the fine motor skills of the nondominant hand, compensating for the innate difference in dexterity between surgeon's hands, thereby ...conferring virtual ambidexterity.
Crossover intervention study (Canadian Task Force classification II-1).
Centers for medical simulation in 2 tertiary care hospitals of Harvard Medical School.
Three groups of subjects were included: (1) surgical novices (medical graduates with no robotic/laparoscopic experience); (2) surgeons in training (postgraduate year 3-4 residents and fellows with intermediate robotic and laparoscopic experience); and (3) advanced surgeons (attending surgeons with extensive robotic and laparoscopic experience).
Each study group completed 3 dry laboratory exercises based on exercises included in the Fundamentals of Laparoscopic Surgery (FLS) curriculum. Each exercise was completed 4 times: using the dominant and nondominant hands, on a standard laparoscopic FLS box trainer, and in a robotic dry laboratory setup. Participants were randomized to the handedness and setting order in which they tackled the tasks.
Performance was primarily measured as time to completion, with adjustments based on errors. Means of performance for the dominant versus nondominant hand for each task were calculated and compared using repeated-measures analysis of variance. A total of 36 subjects were enrolled (12 per group). In the laparoscopic setting, the mean overall time to completion of all 3 tasks with the dominant hand differed significantly from that with the nondominant hand (439.4 seconds vs 568.4 seconds; p = .0008). The between-hand performance difference was nullified with the robotic system (374.4 seconds vs 399.7 seconds; p = .48). The evaluation of performance for each individual task also revealed a statistically significant disparate performance between hands for all 3 tasks when the laparoscopic approach was used (p = .003, .02, and .01, respectively); however, no between-hand difference was observed when the tasks were performed robotically. On analysis across the 3 surgeon experience groups, the performance advantage of robotic technology remained significant for the surgical novice and intermediate-level experience groups.
Robot-assisted laparoscopy may eliminate the operative handedness observed in conventional laparoscopy, allowing for virtual ambidexterity. This ergonomic advantage is particularly evident in surgical trainees. Virtual ambidexterity may represent an additional aspect of surgical robotics that facilitates mastery of minimally invasive skills.
INTRODUCTIONLiterature has shown cognitive overload which can negatively impact learning and clinical performance in surgery. We investigated learners' cognitive load during simulation-based trauma ...team training using an objective digital biomarker. METHODSA cross-sectional study was carried out in a simulation center where a 3-h simulation-based interprofessional trauma team training program was conducted. A session included three scenarios each followed by a debriefing session. One scenario involved multiple patients. Learners wore a heart rate sensor that detects interbeat intervals in real-time. Low-frequency/high-frequency (LF/HF) ratio was used as a validated proxy for cognitive load. Learners' LF/HF ratio was tracked through different phases of simulation. RESULTSTen subjects participated in 12 simulations. LF/HF ratios during scenario versus debriefing were compared for each simulation. These were 3.75 versus 2.40, P < 0.001 for scenario 1; 4.18 versus 2.77, P < 0.001 for scenario 2; and 4.79 versus 2.68, P < 0.001 for scenario 3. Compared to single-patient scenarios, multiple-patient scenarios posed a higher cognitive load, with LF/HF ratios of 3.88 and 4.79, P < 0.001, respectively. CONCLUSIONSLF/HF ratio, a proxy for cognitive load, was increased during all three scenarios compared to debriefings and reached the highest levels in a multiple-patient scenario. Using heart rate variability as an objective marker of cognitive load is feasible and this metric is able to detect cognitive load fluctuations during different simulation phases and varying scenario difficulties.
Nontechnical skills (NTS) in medicine are the "cognitive, social, and personal resource skills that complement technical skills contributing to safe and efficient care." We aimed to (1) evaluate the ...validity and reliability of a 12-element United Kingdom emergency medicine (EM) NTS assessment tool in the context of United States (US) EM practice and (2) identify behaviors unique to US clinical practice.
This was a mixed methods study conducted in 2 phases, following Kane's validity framework. The intended use of the NTS tool is to provide formative assessment of US EM physicians (EPs) from a video of simulated clinical encounters. In phase I, a focus group assessed the appropriateness of each aspect of the tool in the context of US EM practice by reviewing and identifying the NTS of an EP in a simulated clinical scenario. In phase II, EPs (N = 208) attending a national EM conference evaluated an EP's behaviors in 1 of 2 video simulations. Reliability in the form of internal consistency was calculated using Cronbach α. All participants suggested exemplar behaviors for the 12 elements in the context of their own clinical practice and generated new assessment elements.
Internal consistency was acceptable (α > 0.7) for all categories, except teamwork and cooperation. Participants proposed 4 novel behavioral elements and suggested US exemplar behaviors for all 12 original elements.
This tool can be used to assess US EP's NTS for the purpose of formative assessment. Refinement of exemplar behaviors and inclusion of novel US-specific elements may optimize usability.
Objective
Our primary aim was to investigate crew performance during medical emergencies with and without ground-support from a flight surgeon located at mission control.
Background
There are gaps in ...knowledge regarding the potential for unanticipated in-flight medical events to affect crew health and capacity, and potentially compromise mission success. Additionally, ground support may be impaired or periodically absent during long duration missions.
Method
We reviewed video recordings of 16 three-person flight crews each managing four unique medical events in a fully immersive spacecraft simulator. Crews were randomized to two conditions: with and without telemedical flight surgeon (FS) support. We assessed differences in technical performance, behavioral skills, and cognitive load between groups.
Results
Crews with FS support performed better clinically, were rated higher on technical skills, and completed more clinical tasks from the medical checklists than crews without FS support. Crews with FS support also had better behavioral/non-technical skills (information exchange) and reported significantly lower cognitive demand during the medical event scenarios on the NASA-TLX scale, particularly in mental demand and temporal demand. There was no significant difference between groups in time to treat or in objective measures of cognitive demand derived from heart rate variability and electroencephalography.
Conclusion
Medical checklists are necessary but not sufficient to support high levels of autonomous crew performance in the absence of real-time flight surgeon support
Application
Potential applications of this research include developing ground-based and in-flight training countermeasures; informing policy regarding autonomous spaceflight, and design of autonomous clinical decision support systems.
Abstract Study Objective High-quality chest compressions (CCs) are an important component of successful resuscitation. Suboptimal in-hospital CC are commonly reported. Skill degradation and fatigue ...have been implicated. We assessed the effect of a handheld feedback device on the measured and perceived quality of CC and rescuer physiologic response. Methods This is a nonblinded randomized controlled study of nurses at an academic medical center. Participants performed CC on a mannequin either with or without a feedback device. Compression rate (CR) and compression depth (CD), heart rate, and oxygen saturation were documented. Perceived quality of CC, fatigue, and ease of use of the device were obtained. Results Twelve nurses were in the feedback group (FG) and 13 were controls. Mean CD was significantly higher in the FG (1.99 ± 0.37 in vs 1.52 ± 0.36 in; P = .005) and mean CR significantly lower in the FG (127 ± 13.8 per min vs 101 ± 9.7 per min; P ≤ .0001). Using a CD of more than 1.5 in and a CR of 90 to 100 as a composite measure of high-quality CC, the FG performed significantly better (81.4% ± 22.0% vs 10.4% ± 21.9%; P < .0001). Perceived CD, CR, and fatigue did not differ between groups; however, participants overestimated depth and underestimated rate. The FG rated the design as user-friendly (85% + 26%) helpful in maintaining correct CR (83% + 26%). Conclusion A handheld accelerometer-based audiovisual cardiopulmonary resuscitation (CPR) feedback device significantly improved the quality of CCs provided by experienced hospital nurses in a simulated setting, with no perceived or measured difference in fatigue between the 2 groups. The CPR feedback provides an effective means to monitor and improve CPR performance.
Long-duration exploration missions (LDEMs), such as voyages to Mars, will present unique medical challenges for astronaut crews, including communication delays and the inability to return to Earth ...early. Medical events threaten crewmember lives and increase the risk of mission failure. Managing a range of potential medical events will require excellent technical and nontechnical skills (NTSs). We sought to identify medical events with potential for rescue, range them according to the potential impact on crew health and mission success during LDEMs, and develop a list of NTSs to train for management of in-flight medical events.
Twenty-eight subject matter experts with specializations in surgery, medicine, trauma, spaceflight operations, NTS training, simulation, human factors, and organizational psychology completed online surveys followed by a 2-d in-person workshop. They identified and rated medical events for survivability, mission impact, and impact of crewmember NTSs on outcomes in space.
Sudden cardiac arrest, smoke inhalation, toxic exposure, seizure, and penetrating eye injury emerged as events with the highest potential mission impact, greatest potential for survival, and that required excellent NTS for successful management. Key NTS identified to target in training included information exchange, supporting behavior, communication delivery, and team leadership/followership.
With a planned Mars mission on the horizon, training countermeasures need to be developed in the next 3-5 y. These results may inform policy, selection, medical system design, and training scenarios for astronauts to manage in-flight medical events on LDEMs. Findings may extend to surgical and medical care in any rural and remote location.
To evaluate risk of leakage and tissue dissemination associated with various contained tissue extraction (CTE) techniques.
In vitro study (Canadian Task Force classification: II-1).
Academic hospital ...simulation laboratory.
Beef tongue specimens weighing 400 to 500 g were stained using 5 mL indigo carmine dye and morcellated under laparoscopic guidance within a plastic box trainer. CTE was performed via 3 different techniques: a stitch-sealed rip-stop nylon bag and multi-port approach; a one-piece clear plastic 50 × 50-cm isolation bag and multi-port approach; or a 1-piece clear plastic 50 × 50-cm isolation bag and single-site approach. Four trials of each CTE method were performed and compared with an open morcellation control. All bags were insufflated to within 10 to 25 mmHg pressure with a standard CO2 insufflator. Visual evidence of spilled tissue or dye was recorded, and fluid washings of the box trainer were sent for cytologic analysis.
Blue dye spill was noted in only 1 of 12 CTE trials. Spillage was visualized from a seam in 1 of the 4 stitch-sealed rip-stop nylon bags before morcellation of the specimen. The only trial in which gross tissue chips were visualized in the box trainer after morcellation was the open morcellation control. However, cytologic examination revealed muscle cells in the open morcellation washings and in the washings from the trial with dye spill. Muscle cells were not observed at cytologly in any of the other samples.
CTE did not result in any leakage or tissue dissemination with use of the single-site or multi-port approach when using a 1-piece clear plastic 50 × 50-cm isolation bag. Further studies are needed to corroborate these findings in an in vivo context and to evaluate use of alternate bag options for specimen containment.
Medical simulation allows trainees to experience realistic patient situations without exposing patients to the risks inherent in trainee learning and is adaptable to situations involving widely ...varying clinical content. Although medical simulation is becoming more widely used in medical education, it is typically used as a complement to existing educational strategies. Our approach, which involved a complete curriculum redesign to create a fully integrated medical simulation model with an “all at once” implementation, represents a significant departure from conventional graduate medical education models. We applied adult learning principles, medical simulation learning theory, and standardized national curriculum requirements to create an innovative set of simulation-based modules for integration into our emergency medicine residency curriculum. Here we describe the development of our simulation modules using various simulation technologies, their implementation, and our experiences during the first year of integration.
PDF
