Document Detail

Indoor passive smoking: its effect on cardiac performance.
MedLine Citation:
PMID:  1743785     Owner:  NLM     Status:  MEDLINE    
We studied 19 nonsmoker male volunteers, 9 healthy (mean age 30.5 +/- 8.5), and 10 with previous myocardial infarction (mean age 53.8 +/- 5.3), who underwent exercise stress testing twice: in a smoke-free environment and in a smoking environment (carbon monoxide concentration 30-35 ppm). We measured peak exercise power, time to recovery of pre-exercise heart rate, expired concentration of carbon monoxide and plasma carbon monoxide. Obtained data were compared by using t-test. P less than 0.05 was statistically significant. Mean data observed in healthy people were as follows. Peak exercise power 220 +/- 30 watts in a smoking environment versus 220 +/- 30 in a smoke-free environment (P greater than 0.05). Time to recovery of pre-exercise heart rate 19 +/- 4 minutes in a smoking environment versus 8.5 +/- 4 in a smoke-free environment (P less than 0.01). Expired concentration of carbon monoxide before exercise 2.3 +/- 2.01 ppm versus 8.5 +/- 1.6 (P less than 0.01) after exercise in a smoking environment, and 2.3 +/- 2 ppm before exercise versus 2.1 +/- 1.9 after exercise in a smoke-free environment (P less than 0.05). Plasma carbon monoxide before exercise 1.4 +/- 0.2% versus 1.7 +/- 0.4 after exercise in a smoking environment (P greater than 0.05), and 1.2 +/- 0.4% before exercise versus 1.2 +/- 0.4 in a smoke-free environment (P greater than 0.05).(ABSTRACT TRUNCATED AT 250 WORDS)
A Leone; L Mori; F Bertanelli; P Fabiano; M Filippelli
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Publication Detail:
Type:  Clinical Trial; Journal Article    
Journal Detail:
Title:  International journal of cardiology     Volume:  33     ISSN:  0167-5273     ISO Abbreviation:  Int. J. Cardiol.     Publication Date:  1991 Nov 
Date Detail:
Created Date:  1992-01-13     Completed Date:  1992-01-13     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  8200291     Medline TA:  Int J Cardiol     Country:  NETHERLANDS    
Other Details:
Languages:  eng     Pagination:  247-51     Citation Subset:  IM    
Division of Medicine, City Hospital Pontremoli, Lunigiana, Italy.
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MeSH Terms
Breath Tests
Carbon Monoxide / analysis,  blood
Exercise Test
Myocardial Infarction / blood,  physiopathology*
Tobacco Smoke Pollution / adverse effects*
Reg. No./Substance:
0/Tobacco Smoke Pollution; 630-08-0/Carbon Monoxide

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

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