<s>[INST] What Causes Congestive Heart Failure? [/INST] Common causes of congestive heart failure come from other medical conditions that weaken the heart muscle or the arteries in and around the heart. The most common include:

Heart valve disease
Hypertension (high blood pressure)
Infection (endocarditis)
Previous heart attacks
Coronary heart disease (thickening and narrowing of the coronary arteries)
Congenital heart disease or defects
Diabetes
Heart rhythm disorders (cardiac arrhythmias)
Cancer therapy-associated heart failure
Genetic diseases
Pregnancy-associated heart failure and peripartum cardiomyopathy
Another contributing cause of heart failure is cardiomyopathy, which describes any disorder that affects the heart muscle. Three forms of cardiomyopathy are:

Hypertrophic cardiomyopathy is an uncommon, often familial, condition that involves abnormal thickening of the left ventricle and stiffening of the heart, due to a genetic mutation in key proteins involved in heart muscle contraction
Dilated cardiomyopathy, the most common type of cardiomyopathy, refers to a markedly enlarged heart with an impaired ability to pump blood. This also can be caused by genetic mutations or other secondary factors, such as viruses or toxins
Restrictive cardiomyopathy occurs when the heart muscle becomes stiff due to progressive fibrosis or accumulation of abnormal substances and is unable to properly fill with blood Source: BRIGHAM AND WOMENS. Link: https://www.brighamandwomens.org/heart-and-vascular-center/diseases-and-conditions/congestive-heart-failure-cardiomyopathy. Field: Cardiovascular. Disease: Heart Failure </s>