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[Role of respiratory function tests in differential diagnosis of respiratory and cardiac insufficiency]
Aim:
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).
Materials And 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.
Conclusion:
Functional respiratory tests provide significant differentiation between CRI and CCF.
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