Pediatricsbasic
Which chamber is most characteristically dilated in paediatric DCM?
Answer
Left ventricle
Explanation
DCM involves varying degrees of ventricular dilation, **most especially of the left ventricle**. The left atrium may also dilate, but isolated atrial dilation is not the defining ventricular pattern. **Key takeaway:** Think of ventricular enlargement—particularly left ventricular enlargement—with poor contractility in DCM.\n\n**Glossary:** **DCM**: Dilated cardiomyopathy. **Contractility**: The ability of cardiac muscle to contract.
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