Document Detail


A survey of neurological decompression illness in commercial breath-hold divers (Ama) of Japan.
MedLine Citation:
PMID:  20737928     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
A survey was conducted in the northern district of Yamaguchi, Japan to determine the relationship between neurological diving accidents and risk factors among commercial breath-hold divers (Ama). A questionnaire was distributed to 381 Ama divers who are members of the Ama diving union. We sought information on their dive practices (depth of single dive, single dive time, surface interval, length of dive shifts, lunch break) and the presence or absence of medical problems, such as hypertension, cardiac arrhythmia, diabetic mellitus and other issues. Of the 381 Ama divers, 173 responded (45%): 29 were Funado (assisted-descent using weights) and 144 Cachido (unassisted) divers. Twelve had experienced strokelike symptoms during or after repetitive breath-hold diving; 11 were assisted and one unassisted (Funado vs. Cachido). Only two of 12 divers with neurological diving accidents had musculoskeletal symptoms. Neurological events were significantly correlated with dive depth, dive time, and surface interval; however, they were not related to medical history. Neurological diving accidents are more likely to happen among assisted Ama divers than unassisted ones. Repetitive breath-hold diving with a deep dive depth, long dive time, and short surface interval predisposes divers to decompression illness, which characteristically manifests as cerebral stroke.
Authors:
Hideki Tamaki; Kiyotaka Kohshi; Tatsuya Ishitake; Robert M Wong
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Undersea & hyperbaric medicine : journal of the Undersea and Hyperbaric Medical Society, Inc     Volume:  37     ISSN:  1066-2936     ISO Abbreviation:  Undersea Hyperb Med     Publication Date:    2010 Jul-Aug
Date Detail:
Created Date:  2010-08-26     Completed Date:  2010-09-02     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9312954     Medline TA:  Undersea Hyperb Med     Country:  United States    
Other Details:
Languages:  eng     Pagination:  209-17     Citation Subset:  IM; S    
Affiliation:
Department of Environmental Medicine, Kurume University School ofMedicine, Kurume, Japan.
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MeSH Terms
Descriptor/Qualifier:
Aged
Arthralgia / etiology
Diving / adverse effects*
Dizziness / etiology
Female
Humans
Hypesthesia / etiology
Japan / epidemiology
Male
Middle Aged
Nausea / etiology
Nervous System Diseases / epidemiology,  etiology*
Occupational Diseases / epidemiology,  etiology*
Paresis / etiology
Prevalence
Questionnaires
Risk Factors
Speech Disorders / etiology
Vision Disorders / etiology

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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