The heart never rests, and neither does the specialty that cares for it. Cardiology is the branch of medicine concerned with the diagnosis and treatment of disorders of the heart and blood vessels.

Cardiologists manage coronary artery disease, heart failure, arrhythmias, valvular disease, and congenital abnormalities. They use electrocardiography, echocardiography, stress testing, catheterization, and advanced imaging. Interventional cardiologists perform angioplasty and stent placement; electrophysiologists focus on rhythm disorders.

Prevention through risk-factor control forms a large part of modern practice. Collaboration with cardiac surgeons, primary-care physicians, and rehabilitation teams ensures continuity from acute event through long-term management. Advances in devices and drugs have markedly improved survival and quality of life.

• Medical specialty focused on the heart and vessels
• Covers coronary disease, failure, rhythm, and valves
• Uses imaging, catheterization, and device therapy
• Emphasizes both acute care and prevention