[Acute effects of smoking a single cigarette on airway dynamics].
The maximal expiratory flow-volume curve (MEFV) and airway resistance (Raw) were studied before and after smoking a single cigarette in 51 male and 51 female healthy nonsmokers. The results showed that there was a significant increase in Raw after smoking, but no change in MEFV. The acute airway response after smoking a single cigarette represents vagally mediated protective reflex. Raw is the most sensitive test in detecting acute airway constriction. There is no sexual difference in acute effects of smoking.
China-Japan Friendship Hospital.
J T
JT
Lin
D000328:Adult; D000403:Airway Resistance; D005260:Female; D006801:Humans; D008168:Lung / Q000502:physiology*; D008297:Male; D008449:Maximal Expiratory Flow-Volume Curves; D012737:Sex Factors; D012907:Smoking / Q000009:adverse effects*