Cardiac output during exercise in patients with COPD
Date
1986
Authors
Stewart R.I.
Lewis C.M.
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Abstract
Cardiac output response was examined to determine its relationship to exercise and arterial hypoxia, pulmonary hemodynamics, and the clinical/lung mechanics profile of patients with chronic obstructive pulmonary disease (COPD). Twenty patients with COPD were examined on the treadmill at rest and during steady state exercise at the highest workload comfortably tolerable to the subjects (60-70% V̇O2 max). In eight patients, the exercise cardiac output was <80% of predicted, while in the remainder (n = 12), the cardiac output response was normal (>80% of predicted). It was concluded that hyperinflation and severe expiratory airflow limitation may be important determinants of the low exercise cardiac output response in some patients with COPD.
Description
Keywords
blood and hemopoietic system, breathing mechanics, cardiovascular system, chronic obstructive lung disease, diagnosis, exercise, heart, heart output, human, human experiment, lung hemodynamics, priority journal, respiratory system, Aged, Bronchitis, Cardiac Output, Exertion, Human, Lung Diseases, Obstructive, Middle Age, Pulmonary Emphysema
Citation
Chest
89
2
89
2