cardiovascular

Sick sinus syndrome

Sinus node (SND), also known as sick sinus (SSS), is a group of abnormal heart rhythms (arrhythmias) usually caused by a malfunction of the sinus node, the heart's primary pacemaker. -bradycardia syndrome is a of sick sinus syndrome in which the arrhythmia alternates between fast and slow heart rates.

Underlined words are explained — tap any of them.

How it's found

Treatment

·Pacemaker implantation

Complications

·-bradycardia

More in Heart

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