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SHIFT WORK & HEALTH

SHIFT WORK & HEALTH. Dr Omid Aminian. Shift Work. Shift work involves work at times other than normal daylight hours 7:00 AM to 7:00 PM 10%-20% all workers are doing shift work Night and shift work have been associated with: Immediate risk to worker safety

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SHIFT WORK & HEALTH

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  1. SHIFT WORK&HEALTH Dr Omid Aminian

  2. Shift Work • Shift work involves work at times other than normal daylight hours 7:00 AM to 7:00 PM • 10%-20% all workers are doing shift work • Night and shift work have been associated with: Immediate risk to worker safety Long term risk to worker health • Up to 20% of all worker are unable to tolerate working at night

  3. Biologic Rhythms • Ultradian: frequency of less than one cycle every 20h for example REM • Infradian: periods greater than 28h for example menstural cycle • Circadian: oscillate with a frequency close the24h for example body temperature Human biologic rhythms have a 25h cycle

  4. Human variable observed to follow a circadian rhythms • Body temperature • Serum corticosteroids & electrlytes • Cardiovascular functions • Gasteric enzyms secretion • Leukocyte count • Muscle strength • Alertness & mood • Immediate & long term memory

  5. Shift lag - Dyschronism • Strong circadian control: Body temperature Hypothalamic –pituitary-adrenal axis • Weak circadian control: Sleep-wake cycle • Dyschronosis: Disruption of the circadian system

  6. Sleep Deprivation • Sleep deprivation is the most significant complaint in shift work • About 62% of night worker complain sleep deprivation • Shift work affects not only sleep length but also sleep quality • REM decrease in the sleep after night work

  7. Condition That May Be Exacerbate By Shift Work • Sleep disorder • Asthma • Coronary artery disease • Psychiatric disorder • Epilepsy • Gasterointestinal disease • Shift maladaption syndrome • Long-term drug therapy

  8. Shift Work maladaptation syndrome • 10%-20% all shift worker • Chronic sleep disturbance & fatigue • Gasterointestinal symptoms • Alcohol and drug abuse • Depression • Difficult inter personal relationships • Use of sleeping pills • Higher accident

  9. 40,000,000 Americans suffer from sleep disorders that effect the quality and quantity of their sleep. • Only 35% of adults sleep the recommended 8 hours or more per night during the work week. • 56% of adults report symptoms of insomnia a few nights a week.

  10. Common Negative Effects of Shift Work • Lack of Communication between staff on different shifts. • Lack of “Teamwork”. • Lack of concentration while on duty. • Potential Unsafe Conditions. • Stress/fatigue. • SHIFT LAG.

  11. Shift Lag • Mental Symptoms Increased Irritability-Stress-Forgetfulness Psychiatric disorder • Physical Symptoms Sleep disorder-Coronary artery disease- Gasterointestinal disease- Shift maladaption syndrome-Reproductiveeffects

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