Call- Associated Acute Fatigue in Surgical Residency (CAFIS)
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.
|Study Design:||Observational Model: Case-Only
Time Perspective: Cross-Sectional
|Official Title:||Call-associated Acute Fatigue in Surgical Residency- Subjective Perception or Objective Fact?|
- Technical and cognitive performance [ Time Frame: 3 days ] [ Designated as safety issue: No ]Technical and cognitive performance was assessed in a VR-setting of defined parameters of performance and the d2-Paper-Pencil-Test on three consecutive mornings- pre- and post call and after 24 hours resting.
- Sleepiness and Fatigue [ Time Frame: 4 months ] [ Designated as safety issue: No ]Sleepiness was assessed by Stanford Sleepiness Sclae (SSS) and fatigue was measured through pupillography and saliva cortisol concentration on three consecutive mornings- pre- and post call and after 24 hours resting.
|Study Start Date:||October 2007|
|Study Completion Date:||February 2008|
|Primary Completion Date:||February 2008 (Final data collection date for primary outcome measure)|
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.
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.
|Department of Visceral-, Thoracic- and Vascular Surgery, Univeristy Hospital Giessen and Marburg- Location Marburg|
|Marburg, Hessen, Germany, 35041|
|Principal Investigator:||Katja KM Maschuw, MD||Philipps- University, Marburg, Germany|