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Influence of atmospheric pressure on the incidence of spontaneous pneumothorax.
MedLine Citation:
PMID:  24360251     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
BACKGROUND: This study analyses the relationship between the incidence of idiopathic spontaneous pneumothorax (ISP) and atmospheric pressure (AP).
METHODS: A total of 288 cases of ISP were included, 229 men and 59 women. The AP of the day of diagnosis, of the 3 prior days and the monthly average was registered. The association between the incidence of ISP and AP was analyzed by calculating standardized incidence ratio (SIR) and Poisson regression.
RESULTS: The AP on the day of admission (mean±standard deviation) (1,017.9±7 hectopascals [hPa]) was higher than the monthly average AP (1,016.9±4.1 hPa) (P=.005). There was a monthly distribution pattern of ISP with the highest incidence in the months of January, February and September and the lowest in April. When AP was less than 1,014 hPa, there were fewer cases registered than what would statistically have been expected (58/72 cases). In contrast, when the pressure was higher than 1,019 hPa, the registered cases were more than expected (109/82 cases) (SIR=1.25; 95% CI: 1.04 to 1.51). The risk of ISP increased 1.15 times (95% CI: 1.05 to 1.25, P=.001) for each hPa of AP, regardless of sex, age and monthly average AP. A dose-response relationship was observed, with progressive increases in risk (IRR=1.06 when the AP was 1,014-1016 hPa; 1.17 hPa when the AP was 1,016-1,019 hPa and 1.69 when AP was superior to 1,019 hPa) (P for trend=.089).
CONCLUSION: The AP is a risk factor for the onset of idiopathic spontaneous pneumothorax.
Authors:
Raúl Díaz; Manuel Mariano Díez; María José Medrano; Cristina Vera; Paloma Guillamot; Ana Sánchez; Tomás Ratia; Javier Granell
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-12-18
Journal Detail:
Title:  Cirugia espanola     Volume:  -     ISSN:  1578-147X     ISO Abbreviation:  Cir Esp     Publication Date:  2013 Dec 
Date Detail:
Created Date:  2013-12-23     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  1254104     Medline TA:  Cir Esp     Country:  -    
Other Details:
Languages:  ENG; SPA     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 AEC. Published by Elsevier Espana. All rights reserved.
Vernacular Title:
Influencia de la presión atmosférica sobre la incidencia de neumotórax espontáneo.
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