What Causes Heart Failure?

Heart failure is caused by many conditions that damage the heart muscle, including:

Coronary artery disease. Coronary artery disease (CAD), a disease of the arteries that supply blood and oxygen to the heart, causes decreased blood flow to the heart muscle. If the arteries become blocked or severely narrowed, the heart becomes starved for oxygen and nutrients.

Narrowing of Artery
Narrowing of Artery
Normal Artery
Normal Artery

Heart Attack

heart attack occurs when a coronary artery becomes suddenly blocked, stopping the flow of blood to the heart muscle. A heart attack damages the heart muscle, resulting in a scarred area that does not function properly.

Narrowing of Artery
Cardiomyopathy

Cardiomyopathy

Damage to the heart muscle from causes other than artery or blood flow problems, such as from infections or alcohol or drug abuse.

Conditions that overwork the heart. Conditions including high blood pressurevalve diseasethyroid disease, kidney diseasediabetes, or heart defects present at birth can all cause heart failure. In addition, heart failure can occur when several diseases or conditions are present at once.

Cardiomyopathy
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