Cardiology is the branch of medicine focused on diagnosing, treating, and preventing conditions of the heart and cardiovascular system.

It manages cardiovascular diseases like coronary artery disease, heart failure, arrhythmias, hypertension, and congenital heart defects.

Physicians rely on specialized diagnostic tests like electrocardiograms (ECG), echocardiograms, cardiac MRIs, and stress testing to evaluate heart performance.