Sinus Bradycardia Clinical Presentation

Updated: Dec 27, 2017
  • Author: Mark W Livingston, MD; Chief Editor: Erik D Schraga, MD  more...
  • Print


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