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Sick Sinus Syndrome 4 C5561949

Published: July 22, 2026Updated: August 20, 2026

Sick sinus syndrome affects the heart's electrical system, causing irregular heartbeats. It mainly affects older adults and is managed with pacemakers and medications to regulate heart rhythm.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 20, 2026Editorial policy

Key facts at a glance

ICD-10
I78.0
ICD-11
BA00.0
Body system
cardiovascular
Severity
moderate
Chronic
true

Signs and symptoms

Common signs and symptoms that may indicate this condition.

Warning signs - seek immediate care

!

Syncope

!

Palpitations

!

Cerebral hypoperfusion symptoms

Bradycardia

(cardiovascular)

Chest discomfort or palpitations

(cardiovascular)

Noticeable symptoms that may vary in intensity over time.

Frequency: Common at all stages

Fatigue

(cardiovascular)

Dizziness

(cardiovascular)

Medication Comparisons

Compare medications used to treat Sick Sinus Syndrome 4 C5561949. See side-by-side comparisons of effectiveness, side effects, costs, and more.

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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy