Sleep Deprivation Clinical Trial
Official title:
Call-associated Acute Fatigue in Surgical Residency- Subjective Perception or Objective Fact?
The study aimed to evaluate the effects of 24-Hour-Call-associated acute partial sleep deprivation on surgical residents` technical and cognitive performance in a virtual reality (VR) setting. Physiological parameters were used to quantify fatigue in respect to hours of sleep and subjective degrees of sleepiness. Technical performance and cognitive skills were assessed through low- and high fidelity tasks usig the VR- simulator LapSim. Objective alertness was measured by the standardized d2-Paper-Pencil-Test. Cited assessments were performed on three consecutive mornings- pre- and post-call as after 24 hours resting.
Summary Background Data:
The effect of acute partial sleep deprivation on surgical proficiency is still
controversially discussed. The present study is the first to measure objective physiological
parameters of fatigue in respect to subjective perceptions of sleepiness in VR- research of
surgical performance.
Methods:
38 surgeons were explored on three consecutive mornings: prior to a 24-Hour- Call, post-call
and after 24 hours resting. Hours of sleep were recorded. Subjective alertness was assessed
using the standardized Stanford-Sleepiness-Scale (SSS). Saliva cortisol concentrations and
pupillary activity were measured by ELISA and pupillography. The VR-simulator LapSim® was
used to assess technical skills through defined low- fidelity VR-tasks "cutting", "clip
applying" and cognitive skills through defined high-fidelity VR-tasks "intracorporal
suturing", "VR-cholecystectomy". Objective alertness was measured by the standardized
d2-Paper-Pencil-Test.
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