Related Experiment Videos
[Valvular insufficiency in dilated cardiomyopathy diagnosed by color Doppler echocardiography]
Insights
Dilated cardiomyopathy frequently causes multivalvular regurgitation. Echocardiography revealed all patients had mitral regurgitation, and 77% had regurgitation across multiple heart valves.
Area of Science:
- Cardiology
- Cardiovascular Imaging
- Valvular Heart Disease
Background:
- Dilated cardiomyopathy is characterized by ventricular dilation and impaired contractility.
- Valvular regurgitation is a potential complication, but its prevalence in this condition requires further elucidation.
Purpose of the Study:
- To determine the incidence of valvular regurgitation in patients with dilated cardiomyopathy.
- To assess the prevalence of multivalvular regurgitation using advanced echocardiographic techniques.
Main Methods:
- Prospective study of 26 patients with dilated cardiomyopathy (New York Heart Association functional class III or IV).
- Utilized two-dimensional echocardiography and color Doppler flow imaging for valvular assessment.
- Coronary angiography and endomyocardial biopsy excluded other cardiac pathologies.
Main Results:
- All 26 patients (100%) exhibited mitral regurgitation.
- Significant rates of other valvular regurgitations were observed: aortic (34.6%), tricuspid (46.2%), and pulmonary (42.3%).
- Multivalvular regurgitation was prevalent, affecting 77% of patients, with 15.4% experiencing involvement of all four valves.
Conclusions:
- Dilated cardiomyopathy is associated with a high prevalence of valvular regurgitation, particularly mitral regurgitation.
- Two-dimensional echocardiography with color Doppler imaging is effective in identifying multivalvular regurgitation in these patients.
Abstract:
In order to assess the incidence of valvular regurgitation in dilated cardiomyopathy, 26 patients, aged 32 to 61 years, were prospectively studied by two-dimensional echocardiography and color doppler flow imaging. Patients were in New York Heart Association functional class III or IV. All patients underwent coronary angiography which excluded coronary artery disease. Contrast ventriculography showed a dilated and hypocontractile left ventricle and right ventricular endomyocardial biopsy excluded specific heart muscle disease. Regurgitant flows were observed as a mosaic pattern and were semiquantitatively classified as mild, moderate or severe according to the width and depth of the regurgitant jets. Twenty-six (100%) patients had mitral regurgitation, 9 (34,6%) had aortic regurgitation, 12 (46.2%) had tricuspid regurgitation and 11 (42.3%) had pulmonary regurgitation. Multivalvular regurgitation was observed in 77% of patients occurring across two, three, or all four valves in 30.8%; 30.8% and 15.4% of patients, respectively. Two dimensional echocardiography color flow imaging shows a high prevalence of multivalvular regurgitation in patients with dilated cardiomyopathy.