title: [Pulmonary hypertension in chronic nonspecific lung diseases].
abstract: Pulmonary and intracardiac hemodynamic findings are reported. They were obtained by means of catheterization of right cardiac departments and the pulmonary artery with thermodilution in 57 patients with chronic nonspecific pulmonary diseases (CNPD), under conditions of resting, rationed bicycle-ergometric exercise, hypo- and hyperoxia, and nitroglycerin administration. Changes in pulmonary and intracardiac hemodynamics which reflect the ongoing exhaustion of compensatory mechanisms in the external respiration apparatus, the pulmonary vascular system and the heart, are shown to precede the formation of right ventricular hypertrophy in obstructive CNPD A classification of secondary pulmonary hypertension, based on clinical and instrumental signs, is offered.
mesh_terms: D000328:Adult; D000368:Aged; D001991:Bronchitis / Q000503:physiopathology*; D002908:Chronic Disease; D006439:Hemodynamics; D006801:Humans; D006976:Hypertension, Pulmonary / Q000145:classification / Q000209:etiology*; D008875:Middle Aged; D011014:Pneumonia / Q000503:physiopathology*; D011660:Pulmonary Heart Disease / Q000209:etiology / Q000503:physiopathology
vernacular_title: Legochnaia gipertenziia pri khronicheskikh nespetsificheskikh zabolevaniiakh legkikh.