cardiovascular

Sinus bradycardia

Sinus bradycardia is a sinus rhythm with a reduced rate of electrical discharge from the sinoatrial node, resulting in a bradycardia, a heart rate that is lower than the normal range.

Underlined words are explained — tap any of them.

Symptoms — what it feels like

·lightheadedness
·dizziness
·hypotension
·vertigo
·syncope

How it's found

More in Heart

Coronary artery disease Heart failure Arrhythmia (atrial fibrillation)Cardiomyopathy Heart valve disease Rheumatic heart disease Congenital heart defect Heart attack Cardiac arrest Myocarditis Aortic stenosis Long QT syndrome

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Plain-language summary adapted from Wikipedia. Not medical advice.