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Diving pattern and work schedule of construction well divers in Taiwan
Summary
Taiwanese construction divers face high risks of dysbaric osteonecrosis due to prolonged bottom times exceeding decompression limits. This study highlights the need for improved safety protocols to prevent decompression sickness and related bone conditions.
Area of Science:
- Occupational Health
- Diving Medicine
- Hyperbaric Physiology
Background:
- Dysbaric osteonecrosis is a significant concern among construction divers.
- Previous research indicates a high prevalence in Taiwan.
Purpose of the Study:
- To investigate the diving practices and physiological responses of construction well divers in Taiwan.
- To identify risk factors associated with dysbaric osteonecrosis and decompression sickness in this population.
Main Methods:
- Study involved five construction well divers, recording diving methods, depths, bottom times, and work patterns.
- Physiological data including heart rate and water temperature were monitored.
- Venous gas bubbles were assessed using ultrasound during selected dives.
Main Results:
- Divers worked in 24-27°C water using a hot-water system for hypothermia protection.
- Average work duration was 6.6 hours daily, with 60% of dives exceeding US Navy no-decompression limits.
- Venous gas bubbles were detected in two divers; one experienced symptoms of decompression sickness.
Conclusions:
- Prolonged bottom times and the absence of decompression schedules are likely contributors to decompression sickness risk.
- These factors may also increase the risk of developing dysbaric osteonecrosis in construction divers.