Switch for third-degree atrioventricular block

N° 4
Manufacturer Microport CRM Device PM Field SafeR mode
  • 62-year-old woman
  • Reply DR pacemaker (Microport CRM-Sorin) for sinus dysfunction and paroxysmal AV block
  • SafeR algorithm
  • Episodes of switch to DDD for third degree AV block (AVB3)
Graph and trace
  • Atrial pacing with spontaneous ventricular activation
  • 2 consecutive dropped atrial pacing events
  • Switch to DDD (vertical line)
  • Atrial and ventricular pacing
  • This tracing shows an example of switch for third degree AV block (AVB3)
  • The device switches to DDD if it senses two consecutive blocked sensed or paced atrial events
  • This parameter is non programmable