Heart failure occurs when the heart cannot pump enough blood to meet the body’s needs. This page explains typical symptoms, risk factors, common diagnostic approaches and when to contact health services for assessment or urgent care.
Heart failure describes impaired cardiac pump function that reduces effective blood flow to organs. It may predominantly affect the left ventricle, the right ventricle, or both. Clinically, heart failure can present as acute (sudden onset) or chronic (develops and progresses over time). Specialists in cardiology evaluate the clinical picture and determine the classification and next steps.
Typical features include shortness of breath (on exertion or when lying flat), persistent fatigue, swelling in the legs and ankles, unexplained weight gain and waking at night to urinate. Symptoms vary between individuals and can limit daily activities, work and sleep. New or rapidly worsening symptoms should prompt medical evaluation.
Conditions that increase the risk of heart failure include coronary artery disease, high blood pressure, diabetes, valvular heart disease and long-standing arrhythmias. Lifestyle factors such as smoking, poor diet and physical inactivity also raise risk. Preventive steps focus on managing chronic conditions, adopting heart-healthy habits, and attending regular follow-up with your healthcare provider.
Diagnosis starts with a clinical history and physical exam. Common tests include ECG, echocardiography, chest X-ray and blood tests (including markers used in heart failure evaluation). Primary care physicians often coordinate care and refer patients to cardiology or dedicated heart failure clinics for ongoing management. Seek urgent care if symptoms are severe or sudden, for example marked breathlessness, chest pain or fainting.
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