Restrictive cardiomyopathy, the rarest form of cardiomyopathy, is a condition in which the walls of the lower chambers of the heart (the ventricles) are abnormally rigid and lack the flexibility to expand as the ventricles fill with blood.
The pumping or systolic function of the ventricle may be normal but the diastolic function (the ability of the heart to fill with blood) is abnormal. Therefore, it is harder for the ventricles to fill with blood, and with time, the heart loses the ability to pump blood properly, leading to heart failure.
Eating heart-healthy foods may be easier than you think. You don't need to measure or weigh everything or consult calorie books and food labels before every meal. You can fit a healthy diet into a busy lifestyle.
It can be as simple as 1-2-3. Just focus on these three areas, says Katie Ferraro, MPH, RD, CDE, a dietitian and assistant clinical professor at the school of nursing at the University of California at San Francisco:
Eat more fiber.
Switch to healthier fats.
Eat less sodium...
The size of the heart may remain normal with restrictive cardiomyopathy. In some cases, restrictive cardiomyopathy may be confused with constrictive pericarditis, a condition in which the layers of the pericardium (the sac that surrounds the heart) become thickened, calcified, and stiff.
A myocardial biopsy, or biopsy of the heart muscle, occasionally is done to determine the cause of cardiomyopathy. During a myocardial biopsy, a small tissue sample is taken from the heart and examined under a microscope to examine the cause of the symptoms.