Document Detail


Lung function over six years among professional divers.
MedLine Citation:
PMID:  12205238     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
AIMS: To analyse longitudinal changes in pulmonary function in professional divers and their relation with cumulative diving exposure. METHODS: The study included 87 men at the start of their education as professional divers. At follow up one, three, and six years later, 83, 81, and 77 divers were reexamined. The median number of compressed air dives in the 77 divers over the follow up period was 196 (range 37-2000). A group of non-smoking policemen (n = 64) were subjected to follow up examinations in parallel with the divers. Assessment of lung function included dynamic lung volumes, maximal expiratory flow rates, and transfer factor for carbon monoxide (Tl(CO)). The individual rates of change of the lung function variables were calculated by fitting linear regression lines to the data, expressed as percent change per year. RESULTS: The annual reductions in forced vital capacity (FVC) and forced expired volume in one second (FEV(1)) were 0.91 (SD 1.22) and 0.84 (SD 1.28) per cent per year in divers, which were significantly higher than the reductions in the policemen of 0.24 (SD 1.04) and 0.16 (SD 1.07) per cent per year (p < 0.001). The annual reduction in the maximal expiratory flow rates at 25% and 75% of FVC expired (FEF(25%) and FEF(75%)) were related to the log(10) transformed cumulative number of dives in a multiple regression analysis (p < 0.05). The annual reductions in Tl(CO) were 1.33 (SD 1.85) and 0.43 (SD 1.53) per cent per year in divers and policemen (p < 0.05). CONCLUSIONS: FVC, FEV(1), maximal expiratory flow rates, and Tl(CO) were significantly reduced in divers over the follow up period when compared with policemen. The contrasts within and between groups suggest that diving has contributed to the reduction in lung function.
Authors:
Marit Skogstad; E Thorsen; T Haldorsen; H Kjuus
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Occupational and environmental medicine     Volume:  59     ISSN:  1351-0711     ISO Abbreviation:  Occup Environ Med     Publication Date:  2002 Sep 
Date Detail:
Created Date:  2002-09-02     Completed Date:  2002-10-25     Revised Date:  2009-11-18    
Medline Journal Info:
Nlm Unique ID:  9422759     Medline TA:  Occup Environ Med     Country:  England    
Other Details:
Languages:  eng     Pagination:  629-33     Citation Subset:  IM    
Affiliation:
National Institute of Occupational Health, PO Box 8149 Dep., N-0033 Oslo, Norway. marit.skogstad@stami.no
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MeSH Terms
Descriptor/Qualifier:
Accidents, Occupational / statistics & numerical data
Adult
Diving / physiology*
Follow-Up Studies
Forced Expiratory Volume
Humans
Lung / physiology*
Male
Occupational Diseases / etiology
Occupational Exposure
Regression Analysis
Respiratory Function Tests / methods
Vital Capacity
Comments/Corrections

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


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