PVARP post ventricular atrial refractory period avoids pacer induced arrythmia

  • pacer induced arrythmia happens when A sensing lead senses residual QRS or retrograde P wave
  • this leads to another triggering of V lead
  • PVARP or post ventricular atrial refractory period can avoid that by setting a refractory period of atrial sensing after ventricular pacing
  • this leads to max heart rate 120 (PR trigger + refractory period)