High blood pressure, including pre-hypertension, is a major global health economic issue, accounting for about half of the total cases of stroke and ischaemic heart disease. It is responsible for ...

SUDDEN death in persons with artificial pacemakers is a continuing and disturbing problem. Causes include pacemaker-catheter displacement, electric-component failure, broken wires and rising pacing ...

Diastole and systole refer to when the heart muscles relax and contract. The balance between diastolic and systolic pressure determines a person’s blood pressure. A blood pressure reading displays ...

The first heart sound (S1) results from the closing of the mitral and tricuspid valves. The sound produced by the closure of the mitral valve is termed M1, and the sound produced by closure of the ...

Your heart is responsible for pumping blood and oxygen throughout your body. The heart performs this function by expanding and contracting. This movement is what produces your heartbeat. Your ...

Ventricular tachycardia (v-tach or VT) is a very fast heart rhythm that begins in the ventricles. The condition most commonly affects people who have heart disorders, such as coronary artery disease ...