[The prognostic value of haemodynamic tests in chronic bronchitis (author's transl)].
The prognostic value of several functional respiratory and haemodynamic variables was studied in a group of 212 patients with chronic bronchitis, who were examined in steady state, without cardiac or respiratory failure, at rest and when possible during moderate exercise (195 patients). Follow-up interval ranged from 5 to 12 years. Results were processed using two methods: estimation of actuarial survival rate and discriminant analysis. Survival rate curves for the patients showed a reduction relative to the general population of the same ages: 74% within five years compared to 91% in the general population, 56% within nine years compared to 82%. Survival rate was significantly lower in patients with PPA above 30 mmHg, or driving pressure (PPA--PW) above 15 mmHg, or pulmonary vascular resistance higher than 210 dyn . s . cm-5, or when PPA increased more than 10 mmHg during exercise. Discriminant analysis underlined the predictive value of three haemodynamic variables: PPA change from rest to exercise, pressure developed by the right heart (PPA--PRVED) and stroke volume: together, they predict the death of 3 over 4 patients with the criteria chosen.
D000328:Adult; D000368:Aged; D001794:Blood Pressure; D001991:Bronchitis / Q000453:epidemiology / Q000401:mortality / Q000503:physiopathology*; D006328:Cardiac Catheterization; D002908:Chronic Disease; D005260:Female; D005500:Follow-Up Studies; D006439:Hemodynamics; D006801:Humans; D008297:Male; D008875:Middle Aged; D005082:Physical Exertion; D011312:Pressure; D011379:Prognosis; D013318:Stroke Volume
Valeur pronostique du bilan hémodynamique des bronchiteux chroniques.