title: [Normal value and age and sex correlations of mean expiratory output (25-75%). Diagnostic value in early obstructive bronchopneumopathies].
abstract: The maximum output of half-expiration (MMFR) or DME 25-75% is studied in 136 subjects, evalued as non obstructive, after the determination of the MEVS/VC X 100. The values noted are reported to the body surface (S) in order to eliminate the biometric differences. A highly close correlation, of the exponential type, is thus put in evidence for each sex between the DME/S and the age of the subjects. The study of the DME in subjects with obstructive Tiffeneau makes possible: a) to determine an inferior limit of the normal condition; b) to bring confirmation of the fiability of the test. The study of the determination of the DME/S is then performed in subjects with normal MEVS/VC X 100 and clinically suspect of bronchial obstruction (tobacco addicts, patients at stage I of chronic bronchitis, asthmatic patients outside the attacks). The DME determination lets appear the presence of a bronchial obstruction in almost one half of the subjects submitted to study.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D005260:Female; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000175:diagnosis*; D008176:Lung Volume Measurements; D008297:Male; D008875:Middle Aged; D012737:Sex Factors
vernacular_title: Le débit moyen expiratoire 25% - 75%. Valeur normale et corrélation avec l'age et le sexe. Intérêt dans le dépistage précoce des broncho-pneumopathies chroniques obstructives