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Night shift work in resident physicians: does it affect mood states and cognitive levels?

Chiara Costa1, Stefania Mondello2, Elvira Micali3

  • 1Clinical and Experimental Medicine Department, University of Messina, Messina 98125, Italy.

Journal of Affective Disorders
|June 20, 2020
PubMed
Summary

Night shift work among Italian resident physicians did not lead to sleep disorders or cognitive impairment. However, some medical and services residents reported borderline anger and fatigue, with increased vigor across all specialties.

Keywords:
Cognitive impairmentMood statesNightshift workOccupational healthResidentSleep disorders

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Area of Science:

  • Occupational Health
  • Medical Education
  • Sleep Medicine

Background:

  • Night shift work is linked to adverse health outcomes, including increased risk of chronic diseases and impaired cognitive function.
  • Previous research has not specifically examined the impact of night shifts on Italian resident physicians across different specialties.
  • Sleep deprivation in healthcare professionals can negatively affect clinical performance, patient care, and personal safety.

Purpose of the Study:

  • To investigate the prevalence of sleep disorders, cognitive impairment, and mood states in Italian resident physicians.
  • To compare the effects of night shift work across various medical specialties.

Main Methods:

  • 80 resident physicians from medical, surgical, services, and anesthesia departments in Southern Italy participated.
  • A survey using validated questionnaires (Epworth Sleepiness Scale, Pittsburgh Sleep Quality Index, Mini Mental State Examination, Profile of Mood States) was administered.
  • Data were collected from July 2017 to June 2018, with statistical analysis comparing scores across specialties.

Main Results:

  • No significant sleep deprivation, sleep disorders, or cognitive impairment were found in resident physicians, regardless of shift type.
  • Residents in medical and services areas reported borderline levels of Anger-Hostility and increased Fatigue-Inertia.
  • Increased Vigour-Activity scores were observed in residents across all specialties.

Conclusions:

  • While night shifts did not cause sleep disorders or cognitive deficits in this cohort, mood alterations were noted.
  • Emotional responses may stem from the disparity between professional demands and trainee experience.
  • Recommendations include enhanced tutor support for mood monitoring and improved organizational strategies to mitigate trainee emotional overload.