[Role of respiratory function tests in differential diagnosis of respiratory and cardiac insufficiency].
OBJECTIVE
To examine feasibility of using a complex of functional tests for detection of chronic respiratory insufficiency (CRI) and its differential diagnosis with chronic cardiac failure (CCF).


METHODS
The study covered 23 patients with chronic obstructive pulmonary diseases (COPD) and 17 patients suffering from ischemic heart disease (IHD) with stable effort angina class II-III.


RESULTS
Different response to the tests of pulmonary gas exchange and hemodynamics was noted in COPD and IHD. In hypoxia, oxygen consumption rate ranged from 140 to 108% while in IHD this rate reached 106% only in one case. COPD patients had increased minute respiratory volume in hyperoxia contrary to patients with IHD. In hypoxia, the picture was quite opposite, the differences being less obvious.


CONCLUSIONS
Functional respiratory tests provide significant differentiation between CRI and CCF.
Grishin
O V
OV
Shraĭner
M K
MK
Beĭlina
N V
NV
Shurgaia
A M
AM
D000328:Adult; D003937:Diagnosis, Differential; D006333:Heart Failure / Q000175:diagnosis* / Q000209:etiology / Q000503:physiopathology; D006439:Hemodynamics; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000150:complications; D008297:Male; D008875:Middle Aged; D017202:Myocardial Ischemia / Q000150:complications; D012129:Respiratory Function Tests; D012131:Respiratory Insufficiency / Q000175:diagnosis* / Q000209:etiology / Q000503:physiopathology