Final answer:
Restrictive cardiomyopathy is characterized by symptoms similar to heart failure and the possibility of sudden cardiac death without symptoms.
Step-by-step explanation:
Restrictive cardiomyopathy is a type of heart condition characterized by the rigidity and stiffness of the heart muscle, which restricts its ability to fill and pump blood effectively. The descriptions that accurately characterize restrictive cardiomyopathy are:
- Symptoms are similar to left- or right-sided heart failure: Restrictive cardiomyopathy can cause symptoms such as shortness of breath, fatigue, and fluid retention, which are similar to the symptoms of heart failure.
- Some patients die without any symptoms: In some cases, patients with restrictive cardiomyopathy may experience sudden cardiac death without exhibiting any symptoms.