The upper half of your heart has two atria, and the lower half of your heart has two ventricles. The ventricles pump blood to your organs and tissues, and the atria receive blood as it circulates back from the rest of your body.Congestive heart failure develops when your ventricles can’t pump blood in sufficient volume to the body. The major causes of CHF include coronary heart disease, hypertension, cardiomyopathy and other heart diseases.
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