Pediatricsbasic
On echocardiography, dilated cardiomyopathy (DCM) is characterized by ventricular chamber enlargement accompanied by a reduced left ventricular _____ fraction.
Answer
ejection
Explanation
The echocardiographic pattern described is dilation of the **left atrium and left ventricle** with **poor contractility**; the right ventricle may also be affected. Echocardiography therefore evaluates both chamber size and pumping performance. **Key takeaway:** Dilation plus impaired contraction is a central DCM imaging pattern.\n\n**Glossary:** **Echocardiography**: Ultrasound imaging of the heart. **Contractility**: The force-generating ability of cardiac muscle.
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