Sinus bradycardia indicates a heart rate slower than 60 beats per minute. Slow heart rhythm may be physiologically normal for some patients, while frequency <60/min may be inadequate for others.


  • Physiological sinus bradycardia (athletes and hard-working manual workers)
  • Increased vagus tonus
  • Reversible causes of bradycardia (hypovolemia, hypoxia, H ione acidosis, hypo/hyperkaliemia, hypoglycaemia, hypothermia, cardiac tamponade, trauma and the like)


  • Usually asymptomatic
  • Weakness, unconsciousness, presyncope and syncope (short term loss of consciousness).


  • ECG; heart rate below 60 beats per minute


  • Asymptomatic sinus bradycardia does not require treatment
  • Symptomatic bradycardia medication therapy (atropin drug of first choice)
  • Setting up a temporary pacemaker in patients who do not respond to medication therapy and those with serious signs of reduced organ perfusion.

About Heart Center BH

Copyright by BHSrce 2017. All rights reserved.