| The predicted normal value of volume of isoflow on smokers and nonsmokers. |
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Jung Gook Park, Tae Hoon Jung |
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Department of Internal Medicine, College of Medicine, Kyungpook National University, Taegu, Korea |
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| Abstract |
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In order to establish predicted norrnal values of volume of isoflow(VisoV) , Viso V were measured in a total 234 healthy adults, consisting of 78 male nonsmokers, 108 male smokers and 48 female nonsmokers. The volumes of isoflow were deterrnined through analysis of maximal expiratory flow volume curves recorded with a mixture of 80% helium and 20% oxygen(He-O2 gas) following one(1VC) and three vital capacity(3VC) maneuver and with room air. Based upon the correlation of the observed values of the parameters to age and physical characteristics, the following regression forrnulars for the prediction of the parameters, using age in year(A) as a variable, were obtained.
1VC method (VisoV1)
Male smoker : 0.614A+2.347
Male nonsmoker : 0.370A-2.792
Female nonsmoker : 0.588A - 2.459.
3VC method (VisoV3 )
Male smoker : 0.467 A + 1.696
Male nonsmoker : 0.288A -1.538
Female nonsmoker : 0.367A-0.114 |
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