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Sick Sinus Syndrome

Definition

Sick sinus syndrome is a collection of heart rhythm disorders that include:

  • Sinus bradycardia -- slow heart rates from the natural pacemaker of the heart
  • Tachycardias -- fast heart rates
  • Bradycardia-tachycardia -- alternating slow and fast heart rhythms

Symptoms

Usually, no symptoms occur. Symptoms that do occur are nonspecific and may mimic other disorders.

Symptoms may include:

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