title: [Statistical study of the correlations between spirometric data and arterial blood gas tensions. II. During a 40-watt exercise (author's transl)].
abstract: PaO2 and PaCO2, after 5 min of a 40-Watt exercise, and spirometric data have been statistically evaluated in 152 patients with chronic obstructive bronchitis. In these patients, the hypoventilation syndrome increases during exercise. The correlation between age and PaO2 is identical during rest and exercise, but the correlation between PaO2 or PaCO2 and FEV1 (% predicted) is closer during exercise than during rest. The value 50 of the FEV1 (% predicted) divides the patients into two groups: the patients who stay normocapnic and those who become hypercapnic or increase their hypercapnemia. These data show the interest of the FEV1 (% predicted) values and allow to explain the evolution of the arterial blood gas tensions during exercise.
mesh_terms: D000328:Adult; D001784:Blood Gas Analysis; D001991:Bronchitis / Q000097:blood / Q000503:physiopathology*; D002245:Carbon Dioxide / Q000097:blood*; D005541:Forced Expiratory Volume; D006801:Humans; D008875:Middle Aged; D010100:Oxygen / Q000097:blood*; D005082:Physical Exertion; D013147:Spirometry
chemical_list: D002245:Carbon Dioxide; D010100:Oxygen
vernacular_title: Etude statistique des corrélations entre les critères spirographiques et les pressions partielles d'oxygène et d'anhydride carbonique dans le sang artériel. II. A l'exercise musculaire de 40 w.