NCT06636318

Immune Status After Being on Call for 24 Hrs

Impact of a 24-hour Shift Call on the Immune Status of Surgery Residents

• Status: Recruiting
• Phase: —
• Study type: Observational
• Enrollment: 60 (estimated)
• Sponsor: University of Chicago · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Accepted

Summary

Sleep deprivation is a prevalent problem in modern societies. Sleep deprivation can cause hormonal changes, such as an increase in cortisol, as well as inflammation. Animal studies have shown an increase in inflammatory cytokine production following sleep deprivation. Additionally, humans experiencing sleep deprivation may experience a decrease in natural killer cells and lymphocytes. Physicians, particularly those in surgical specialties, are often subjected to sleep deprivation as part of their medical residency training. This study hypothesizes that after 24-hour shifts, there is an increase in inflammatory response and impairment of the immune response against unspecific activation. This proposal aims to provide insight into the impact of sleep deprivation on the immune system of surgery residents by characterizing the phenotype and function of immune cells, as well as their correlation with biometric data.

Conditions

• Sleep Deprivation

Interventions

Type	Name	Description
DIAGNOSTIC_TEST	Blood Sample Collection	To characterize the phenotype and function of immune cells in surgery residents before and after a 24-hour shift, and before and after a month of being "on call". Along with to investigate the relationship between sleep deprivation, physical activity, and different immune responses.
DEVICE	Actigraph (GT9X-BT) Monitor	Participants will be asked to wear their monitor every day for a week. The monitor will collect their step count, sleep and heart rate automatically. Participants will return their monitor at visit 5 (day 30) of the study.

Timeline

• Start date: 2024-10-17
• Primary completion: 2027-12-01
• Completion: 2027-12-01
• First posted: 2024-10-10
• Last updated: 2025-12-09

Locations

1 site across 1 country: United States

Regulatory

• FDA-regulated device study