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Cardiomegaly can be classified by the main enlarged location of the heart, and/or by the structure of the enlargement. Specific subtypes include athletic heart syndrome, which is a non-pathological condition commonly seen in sports medicine in which the heart is enlarged, and the resting heart rate is lower than normal.
The heart becomes enlarged, or hypertrophic, due to intense cardiovascular workouts, creating an increase in stroke volume, an enlarged left ventricle (and right ventricle), and a decrease in resting heart rate along with irregular rhythms. The wall of the left ventricle increases in size by about 15–20% of its normal capacity.
It is also important to control heart disease risk factors including diabetes, high cholesterol, and high blood pressure. Exercise, pregnancy, and prior health conditions like ASD II can also promote cardiac remodeling, so routine primary care visits are important to distinguish between physiological and pathological atrial enlargement.
Cardiomyopathy is a group of primary diseases of the heart muscle. [1] Early on there may be few or no symptoms. [1] As the disease worsens, shortness of breath, feeling tired, and swelling of the legs may occur, due to the onset of heart failure. [1] An irregular heart beat and fainting may occur. [1]
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Restrictive cardiomyopathy is where the heart muscle is restricted, meaning it becomes stiffer and less compliant. The muscles and size of the ventricles, though, stay about the same size or maybe the only get slightly enlarged. Normally, when blood fills the ventricles, they’re compliant so they stretch out and allow more blood to fill in.
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Coronary artery disease (CAD), also called coronary heart disease (CHD), or ischemic heart disease (IHD), [13] is a type of heart disease involving the reduction of blood flow to the cardiac muscle due to a build-up of atheromatous plaque in the arteries of the heart. [5] [6] [14] It is the most common of the cardiovascular diseases. [15]