Which statement best defines cardiomyopathy in the provided material?
Answer
A primary disease of the myocardium
Explanation
Cardiomyopathy is defined here as a **primary disease of the myocardium**, the muscular tissue of the heart. The other options describe valve, coronary, or pericardial disorders rather than the myocardial disease category being defined. **Key takeaway:** Cardiomyopathy centers on disease of the heart muscle.\n\n**Glossary:** **Myocardium**: The muscular layer of the heart.