Dilated cardiomyopathy is best described as which of the following?

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Multiple Choice

Dilated cardiomyopathy is best described as which of the following?

Explanation:
Dilated cardiomyopathy describes a heart with enlarged chambers, especially the ventricles, and a weakened muscular contraction, so the heart can't pump as effectively. That combination—enlarged, underperforming pump—is precisely what "weakened and enlarged, making it a less efficient pump" conveys. Other options miss the key point: thickened, stiff walls describe hypertrophic cardiomyopathy; normal pumping with dilation contradicts the hallmark systolic dysfunction; isolated atrial dilation isn’t the pattern seen in dilated cardiomyopathy.

Dilated cardiomyopathy describes a heart with enlarged chambers, especially the ventricles, and a weakened muscular contraction, so the heart can't pump as effectively. That combination—enlarged, underperforming pump—is precisely what "weakened and enlarged, making it a less efficient pump" conveys.

Other options miss the key point: thickened, stiff walls describe hypertrophic cardiomyopathy; normal pumping with dilation contradicts the hallmark systolic dysfunction; isolated atrial dilation isn’t the pattern seen in dilated cardiomyopathy.

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