[Cardiac index and pressure in the pulmonary artery during physical loading of patients suspected of latent heart failure].
Pulmonary arterial diastolic blood pressure (PADBP) and cardiac index (CI) were measured by thermodilution at rest and during exercise (sitting bicycle ergometry) in 24 patients. CI grew at least 2.5-fold, and PADBP was never beyond 16 mm Hg at the peak of exercise in individuals showing no signs of coronary and myocardial disorders. Similar findings were demonstrated in 6 of 9 patients with idiopathic heart rhythms disorders. In 3 patients, exercise provoked a PADBP rise above 30 mm Hg, possibly an evidence of early myocardial contractility disturbance. Six coronary patients showed these patterns of response: no abnormal changes, or a PADBP rise in the presence of normal CI, or a PADBP rise combined with declining CI. These findings are attributed to developing heart failure, an impairment of myocardial relaxation or the absence of myocardial dysfunction.
D000293:Adolescent; D000328:Adult; D001145:Arrhythmias, Cardiac / Q000150:complications; D001794:Blood Pressure; D002302:Cardiac Output; D006332:Cardiomegaly / Q000150:complications; D002312:Cardiomyopathy, Hypertrophic / Q000150:complications; D003327:Coronary Disease / Q000150:complications; D003971:Diastole; D005080:Exercise Test; D006333:Heart Failure / Q000150:complications / Q000175:diagnosis*; D006339:Heart Rate; D006801:Humans; D008297:Male; D008875:Middle Aged; D011651:Pulmonary Artery
Serdechnyĭ indeks i davlenie v legochnoĭ arterii vo vremia fizicheskoĭ nagruzki pri podozrenii na skrytuiu serdechnuku nedostatochnost'.