Heart failure, also known as congestive heart failure (CHF), is a chronic condition in which the heart is unable to pump blood efficiently enough to meet the body's needs. 

Heart failure can result from various conditions that weaken the heart, such as coronary artery disease, high blood pressure (hypertension), diabetes, heart valve diseases, and previous heart attacks.

Common symptoms include shortness of breath, fatigue, swelling in the legs, ankles, or abdomen (edema), persistent coughing, and rapid or irregular heartbeat.

It can be diagnosed using various tests, including echocardiograms, electrocardiograms (ECGs), blood tests, chest X-rays, and stress tests.

Common medications include ACE inhibitors, beta-blockers, diuretics, and aldosterone antagonists to manage symptoms and improve heart function.

Diet, exercise, limiting salt intake, quitting smoking, and managing stress are essential for managing heart failure.

Managing risk factors such as high blood pressure, diabetes, and coronary artery disease, maintaining a healthy lifestyle, and following medical advice are critical in preventing heart failure.

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