VENTILATORY LUNG-FUNCTION FOLLOWING 2 YEARS OF TOBACCO ABSTINENCE

  • 1 January 1977
    • journal article
    • research article
    • Vol. 58  (6) , 311-318
Abstract
Spirometry, maximal expiratory flows and the N closing volume test were studied in 59 subjects following their attempt to give up smoking. Seventeen subjects were tobacco abstinent for at least 5 mo. This group showed significant improvement of vital capacity (VC), forced expiratory volume in 1 s (FEV1) and the slope of phase III. Of these subjects, 9 remained ex-smokers for at least 24 mo. No significant improvement of any of the measured variables could be established in this group. This may be due to the small number in the group and the circumstance that they were older and had worse lung function before smoking cessation compared with those who resumed smoking.