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Related Experiment Video

Updated: May 28, 2026

Collecting Sleep, Circadian, Fatigue, and Performance Data in Complex Operational Environments

Collecting Sleep, Circadian, Fatigue, and Performance Data in Complex Operational Environments

Published on: August 8, 2019

Resident fatigue in 2010: where is the beef?

Maria Veronica Hegar¹, Michael S Truitt, Alicia J Mangram

¹General Surgery Residency Program, Methodist Dallas Medical Center, Dallas, TX 75203, USA. doctorhegar@gmail.com

American Journal of Surgery

|October 11, 2011

Summary

Resident performance on simulator tasks did not decrease over a 24-hour call period. These findings do not support the Accreditation Council for Graduate Medical Education

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Last Updated: May 28, 2026

Collecting Sleep, Circadian, Fatigue, and Performance Data in Complex Operational Environments

Collecting Sleep, Circadian, Fatigue, and Performance Data in Complex Operational Environments

Published on: August 8, 2019

Area of Science:

Medical Education
Resident Duty Hours
Task Performance Simulation

Background:

Accreditation Council for Graduate Medical Education (ACGME) duty hour limits for postgraduate year-1 residents effective July 1, 2011, mandate a maximum of 16 hours of call.
Prior research indicated potential decrements in post-call task performance.
This study aimed to assess if these performance decrements persisted in 2010 and identify specific time points of occurrence.

Purpose of the Study:

To evaluate resident task performance during a 24-hour call period.
To determine if decrements in performance exist and at what time intervals they occur.
To inform future resident duty hour regulations.

Main Methods:

Fourteen residents participated in the study.
Residents completed 4 simulator tasks across 5 separate call periods.
Task performance was assessed at 4 time intervals (T0, T12, T18, T24) over 24 hours, followed by a post-call survey.

Main Results:

A trend towards decreased task completion time was observed over the 24-hour call.
Task accuracy and efficiency were generally preserved.
Some residents demonstrated improved performance, with minimal correlation between perceived fatigue and actual performance.

Conclusions:

No decrease in junior or senior resident task performance was found over a 24-hour call.
The study's findings do not support the 2011 ACGME maximum duty hour length of 16 hours.
Resident performance may not be negatively impacted by longer call durations within a 24-hour period.