Anesthesia Resident Training Experience Minimally Impacts Emergence Time, Making Correlation of Resident Competency With This Operational Metric Difficult.

Anesthesia residents are deemed competent based on subjective and objective metrics. Knowledge acquisition and procedural skill is often difficult to accurately measure. Inspecting tangible metrics of perioperative efficiency may provide a source for reliable evaluation. Retrospective case-log database review yielded 3072 surgical cases involving residents over 5 years. Primary variable investigated was the time from surgery completion to exit from operating room. Other variables recorded included day of week, attending anesthesiologist name, attending surgeon name, patient age, sex, American Society of Anesthesiologists physical status (ASA PS) classification, and inpatient versus day surgery status. After controlling for procedure duration time, inpatient status, ASA PS, surgeon, and attending anesthesiologist, resident training time had high statistical significance. In the fully adjusted model, 1 year of resident training was associated with a reduction in emergence time by 28 seconds. A 1-hour increase in procedure time was associated with an increase in emergence time of 34 seconds. Although a statistically significant correlation between anesthesia resident training time and emergence time was demonstrated, the clinical significance is likely low given the relatively small amount of actual time saved. We caution the value of using perioperative metrics (e.g., emergence time) for evaluating anesthesia resident competency, until such metrics have undergone significant validation.

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