Related Experiment Videos
[Ventricular performance during exercise in patients with chronic obstructive pulmonary disease (COPD)]
I Sasaki1, T Akashiba, T Horie
1First Department of Internal Medicine, Nihon University School of Medicine, Tokyo, Japan.
Nihon Kyobu Shikkan Gakkai Zasshi
|January 1, 1992
Summary
Chronic obstructive pulmonary disease (COPD) patients exhibit systolic dysfunction in both ventricles, impacting cardiac performance during exercise. Mechanical factors like pulmonary hyperinflation may contribute to this cardiac dysfunction in COPD.
Area of Science:
- Cardiology
- Pulmonology
- Nuclear Medicine
Context:
- Chronic obstructive pulmonary disease (COPD) affects cardiac function, particularly during exertion.
- Assessing ventricular performance in COPD patients is crucial for understanding disease progression and treatment.
Purpose:
- To evaluate left and right ventricular performance during exercise in COPD patients using radionuclide equilibrium angiography.
- To investigate the relationship between cardiac dysfunction, pulmonary hemodynamics, and gas exchange in COPD.
Summary:
- Radionuclide angiography revealed systolic dysfunction in both left and right ventricles of COPD patients during exercise.
- Pulmonary vascular resistance and pulmonary artery pressure correlated with right ventricular end-systolic volume.
- Left ventricular dysfunction was linked to hypercapnia, and exercise impaired stroke volume augmentation in many patients.
Impact:
- Findings suggest mechanical factors, such as pulmonary hyperinflation, contribute to cardiac dysfunction in COPD.
- This study highlights the complex interplay between respiratory mechanics and cardiac performance in COPD patients.
- Provides insights for potential therapeutic strategies targeting cardiac complications in COPD.