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What is sinus bradycardia?

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This is one type of bradycardia, when your resting heart beat is less than 60 beats a minute. Your sinus node, a group of cells that sends out electrical signals that tell you when to pump out more blood, may send those signals too slowly or not at all.

It is somewhat common in children, athletes, and older adults. It may be mild enough that you never notice any symptoms. More serious cases may make you dizzy and give you chest pains and breathing problems.

From: What Are the Types of Bradycardia? WebMD Medical Reference

SOURCES:

Mount Sinai Hospital: “Bradycardia.”

Johns Hopkins Medicine: “Bradycardia.”

University Hospital Southampton, UK, “Bradyarrhythmias (slow heart rhythms).”

Saint Luke’s Health System: “Sinus Bradycardia.”

American Heart Association, “What Is Pericarditis?”

NIH, National Heart, Lung, and Blood Institute, “What Is Sleep Apnea?” “What is Heart Block?” “Types of Heart Block,” “What Causes Heart Block?” “How is Heart Block Treated?”

U.S. National Library of Medicine, “How does the thyroid work?”

Mayo Clinic: “Bradycardia: Treatments and Drugs,” “Sick sinus syndrome: Causes,” “Bradycardia: Causes.”

American Academy of Family Physicians: “Diagnosis and Treatment of Sick Sinus Syndrome.”

Reviewed by James Beckerman on August 02, 2018

SOURCES:

Mount Sinai Hospital: “Bradycardia.”

Johns Hopkins Medicine: “Bradycardia.”

University Hospital Southampton, UK, “Bradyarrhythmias (slow heart rhythms).”

Saint Luke’s Health System: “Sinus Bradycardia.”

American Heart Association, “What Is Pericarditis?”

NIH, National Heart, Lung, and Blood Institute, “What Is Sleep Apnea?” “What is Heart Block?” “Types of Heart Block,” “What Causes Heart Block?” “How is Heart Block Treated?”

U.S. National Library of Medicine, “How does the thyroid work?”

Mayo Clinic: “Bradycardia: Treatments and Drugs,” “Sick sinus syndrome: Causes,” “Bradycardia: Causes.”

American Academy of Family Physicians: “Diagnosis and Treatment of Sick Sinus Syndrome.”

Reviewed by James Beckerman on August 02, 2018

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What conditions can cause sinus bradycardia?

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