Sinus Bradycardia: Follow-up

The following are the most important diseases or complications that may be contributed to by sinus bradycardia:

Cardiovascular System (I00-I99)

  • Sudden cardiac death (PHT).
  • Jumping to a different heart rhythm

Psyche – nervous system (F00-F99; G00-G99)

  • Anxiety

Prognostic factors

In clinically heart-healthy individuals, an asymptomatic resting heart rate below 50/min appears to affect prognosis only if it is dependent on heart rate-lowering medication:

  • Patients without heart rate-lowering medication: linear increase in mortality (death rate) with heart rate:
    • Group with resting heart rate <50/min: Mortality not significantly lower than in reference group (resting heart rate: 60 to 69/min).
    • Group with resting pulse > 80/min showed a 49% increased mortality risk, which was significant
  • Patients on heart rate-lowering medication: J-shaped association between resting heart rate and mortality rate.
    • Group with resting heart rate > 80/min: Mortality 255% higher than reference range.
    • Group with resting pulse < 50/min: Mortality increased by 142%.