Sinus Bradycardia

ECG Features

Figure 1: ECG Strip[1]

Sinus bradycardia is a sinus rhythm with a resting heart rate below the normal rate.[2]

Table 1: ECG Characteristics[3]

Clinical Significance[4]

  • Sinus bradycardia is normally found in otherwise healthy young adults or sleeping patients.
  • Some causes of sinus bradycardia may be related to increased vagal tone.

ECM Features

Figure 2: ECM Analysis, Record 232[5][6]

Additional Information


  1. Sinus Bradycardia [Online image]. (2013). Retrieved July 19, 2016, from
  2. Sinus Bradycardia. (n.d.). Retrieved July 27, 2016, from
  3. Sinus Bradycardia. (n.d.). Retrieved July 27, 2016, from
    1. Livingston, M. W. (n.d.). Sinus Bradycardia. Retrieved August 08, 2016, from
  4. MIT-BIH Arrhythmia Database. (1980). Retrieved June, 2016, from
  5. Goldberger AL, Amaral LAN, Glass L, Hausdorff JM, Ivanov PCh, Mark RG, Mietus JE, Moody GB, Peng C-K, Stanley HE. PhysioBank, PhysioToolkit, and PhysioNet: Components of a New Research Resource for Complex Physiologic Signals. Circulation101(23):e215-e220 [Circulation Electronic Pages;]; 2000 (June 13).