Effects of Sleep Loss on Endothelial Function and Cytokine Levels in Internal Medicine Residents
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|ClinicalTrials.gov Identifier: NCT00272233|
Recruitment Status : Completed
First Posted : January 4, 2006
Last Update Posted : March 20, 2007
|Condition or disease|
Context: Sleep loss is associated with increased blood levels of interleukin-6 (IL-6) and C-reactive protein (CRP). Medical residents are often deprived of normal sleep during extended work shifts, but the effects of work-related sleep loss on biomarkers of vascular inflammation and function are unknown.
Objective: We sought to test the hypothesis that sleep loss during extended work shifts during medical training is associated with increased circulating levels of pro-inflammatory biomarkers and evidence of vascular dysfunction.
Design: Outcome measures were assessed after extended 30-hour work shifts and non-extended 6-hour work shifts in a single-blind, randomized crossover design.
Setting: University hospital medical intensive care unit
Patients or Other Participants: Twenty-two healthy medical residents were studied during a medical intensive care unit rotation.
Main Outcome Measure(s): Sleep related cytokines (interleukin-6 and tumor necrosis factor), serum markers of vascular inflammation (C-reactive protein), and flow-mediated dilation in the brachial artery.
|Study Type :||Observational|
|Enrollment :||22 participants|
|Observational Model:||Defined Population|
|Observational Model:||Natural History|
|Official Title:||Effects of Sleep Loss on Endothelial Function and Cytokine Levels in Internal Medicine Residents|
|Study Start Date :||December 2004|
|Study Completion Date :||June 2005|
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00272233
|United States, Connecticut|
|Yale University School of Medicine|
|New Haven, Connecticut, United States, 06510|
|Principal Investigator:||Stuart D Katz, MD||Yale University|