Junctional Bradycardia

Last Updated on August 19, 2026

Pathophysiology

• Cardiac rhythms arise from atrioventricular junction , with heart rate of <60 bpm

Presentation

• Usually asymptomatic

ECG

• P wave in lead II: inverted / absent
• Regular rhythm
• Narrow QRS complex
• Ventricular rate 45 – 60 bpm

References

1. Junctional bradycardia is a potential risk factor of stroke
2. Junctional rhythms ECG review