[Estimation of static lung volumes by nitrogen washout method. Single breath of oxygen].
Total lung capacity (TLC) and residual volume (RV) estimations were obtained from single-breath nitrogen washouts in 96 male and 77 female healthy never-smokers with normal spirometry from a non-polluted rural area in north-east France. TLC depended on height (both sexes) and diminished slightly with age in males, with the body-mass index (kg/m2) in females. RV increased with age in both sexes and with weight in males. The RV/TLC ratio was related only to age. When compared with values obtained using multiple-breath helium dilution, our results yielded lower predicted values. The test depends heavily on the subject's co-operation, and errors are frequent if a standard procedure is not observed. This method cannot thus be recommended for routine use in patients with respiratory diseases.
INSERM, Unité 115, Faculté de Médecine, Vandoeuvre.
D
D
Teculescu
M C
MC
Damel
L
L
Benamghar
E
E
Costantino
Q T
QT
Pham
M
M
Marchand
D000328:Adult; D000368:Aged; D001827:Body Height; D001944:Breath Tests; D005260:Female; D005602:France; D006801:Humans; D007201:Indicator Dilution Techniques; D008176:Lung Volume Measurements / Q000379:methods*; D008297:Male; D008875:Middle Aged; D009584:Nitrogen; D012115:Residual Volume; D012424:Rural Population; D014109:Total Lung Capacity
D009584:Nitrogen
Estimation des volumes pulmonaires (statiques) par la méthode du rinçage d'azote. Inspiration unique d'oxygène.