Sinus Bradycardia Clinical Presentation

Updated: Dec 27, 2017
  • Author: Mark W Livingston, MD; Chief Editor: Erik D Schraga, MD  more...
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Sinus bradycardia is most often asymptomatic. However, symptoms may include the following when severe:

  • Dizziness

  • Lightheadedness

  • Chest pain

  • Shortness of breath

  • Exercise intolerance

Pertinent elements of the history include the following:

  • Previous cardiac history (eg, myocardial infarction, congestive heart failure, valvular failure)

  • Medications

  • Toxic exposures

  • Prior illnesses


Physical Examination

Cardiac auscultation and palpation of peripheral pulses reveal a slow, regular heart rate.

The physical examination is generally nonspecific, although it may reveal the following signs:

  • Decreased level of consciousness

  • Cyanosis

  • Peripheral edema

  • Pulmonary vascular congestion

  • Dyspnea

  • Poor perfusion

  • Syncope