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Night-shift work is associated with increased pain perception.

Dagfinn Matre1, Stein Knardahl, Kristian Bernhard Nilsen

  • 1Department of Work Psychology and Physiology, National Institute of Occupational Health, PO Box 8149 Dep, N-0033 Oslo, Norway. dagfinn.matre@stami.no.

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Summary
This summary is machine-generated.

Night-shift work significantly increases pain perception, particularly for electrically induced and heat pain, while also reducing pain inhibition. This highlights a crucial physiological impact of shift work on pain sensitivity.

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Area of Science:

  • Occupational Health
  • Pain Research
  • Sleep Science

Background:

  • Shift work is prevalent in healthcare, affecting numerous nurses.
  • Understanding the physiological impact of shift work on pain perception is crucial for worker well-being.

Purpose of the Study:

  • To investigate the effect of night-shift work on experimentally induced pain perception.
  • To assess changes in pain sensitivity, pain inhibition, sleepiness, and vigilance in nurses.

Main Methods:

  • Paired cross-over design comparing habitual sleep with two consecutive night shifts.
  • Experimental pain assessment including electrical, heat, cold, and pressure pain.
  • Measurement of pain inhibition, sleepiness (Karolinska Sleepiness Scale), and vigilance.

Main Results:

  • Night-shift work (NSW) significantly increased sensitivity to electrical pain (22.3%) and heat pain (26.5%).
  • Pain inhibition was 66.9% stronger after NSW.
  • Sleepiness increased significantly, and vigilance decreased after NSW.

Conclusions:

  • Night-shift work demonstrably alters pain sensitivity and inhibition in nurses.
  • These measurable changes suggest NSW is a significant factor in physiological responses.
  • Further research is needed to understand the differential effects on various pain modalities.