[abstract] DECOMPRESSION ILLNESS IN JAPANESE AMA DIVERS: A QUESTIONNAIRE SURVEY

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[abstract] DECOMPRESSION ILLNESS IN JAPANESE AMA DIVERS: A QUESTIONNAIRE SURVEY

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Title: [abstract] DECOMPRESSION ILLNESS IN JAPANESE AMA DIVERS: A QUESTIONNAIRE SURVEY
Author: Tamaki, H; Kohshi, K; Andoh, H; Ishitake, T; Wong, R
Abstract: BACKGROUND: To estimate the relationship between diving accidents and risk factors among professional breath-hold divers (Ama), we conducted a survey on these divers in the northern district of Yamaguchi, Japan. MATERIALS AND METHODS: We distributed questionnaire to 381 Ama divers who are members of the diving union. We sought information on diving history (depth of dives, duration of dives, surfacing interval and diving disorders) and presence of any medical problems such as hypertension, cardiac arrhythmia, diabetic mellitus and cerebrovascular diseases. RESULTS: We received answers from 185 Ama divers; 28 (28/185=15%) were partially assisted and 157(157/185=85%) unassisted divers. Twelve of them had stroke-like neurological events during or following repetitive breath-hold dives; eleven were partially assisted and one was an unassisted diver. Only one of 12 divers with neurological diving accidents had joint pain in an upper limb. Diving accidents were significantly affected with diving depth (>10 m), diving time (>60 sec) and surface interval (<60 sec), however, they were not related to medical history. Moreover, hearing disturbance appeared more common in deeper diving depths (>10 m). CONCLUSIONS: Diving accidents are common in partially assisted Japanese Ama divers. Repetitive breath-hold dives with long diving durations and short surface intervals appear to induce decompression illness. The main symptoms are neurological.
Description: Abstract of the Undersea and Hyperbaric Medical Society, Inc. Annual Scientific Meeting, Las Vegas, Nevada, USA. (http://www.uhms.org)
URI: http://archive.rubicon-foundation.org/9097
Date: 2009

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  • UHMS Meeting Abstracts
    This is a collection of the published abstracts from the Undersea and Hyperbaric Medical Society (UHMS) annual meetings.

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