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Effect of Shift Work on Nocturia.

Jin Wook Kim1

  • 1Department of Urology, College of Medicine, Chung-Ang University, Seoul, Republic of Korea.

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This summary is machine-generated.

Shift work disrupts circadian rhythms, leading to increased nocturia (frequent nighttime urination). This is primarily due to reduced nocturnal bladder capacity, not increased urine production.

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Area of Science:

  • Urology
  • Sleep Medicine
  • Chronobiology

Background:

  • Nocturia, or frequent nighttime urination, significantly impacts quality of life.
  • Circadian rhythm disruption is a known factor affecting physiological processes.
  • Shift work, characterized by altered sleep-wake cycles, presents a unique model to study circadian influences on nocturia.

Purpose of the Study:

  • To investigate the relationship between circadian rhythm disruption and nocturia.
  • To identify the specific component of nocturia (urine production vs. bladder capacity) affected by shift work.

Main Methods:

  • A comparative study of 1741 untreated patients (1376 non-shift workers, 365 shift workers) between 2011-2013.
  • Nocturia indices were assessed using frequency volume charts (FVCs).
  • General linear models compared 8-hour interval urine production and voiding frequency between non-shift, night-shift, and day-shift workers.

Main Results:

  • Night-shift workers exhibited significantly higher nocturia frequency compared to non-shift workers (P <.01).
  • Nocturnal polyuria index did not significantly differ between groups (P =.24).
  • Nocturnal bladder capacity index was significantly increased in night-shift workers (P <.01), indicating reduced capacity.

Conclusions:

  • Alternating work shifts are associated with increased nocturia, particularly during night shifts.
  • The primary driver of shift work-related nocturia appears to be a decrease in nocturnal bladder capacity.
  • These findings highlight the impact of circadian rhythm disruption on bladder function and nocturia.