A 12 lead ECG recorded post DDD pacemaker implant
Jason Collinson – Chief Cardiac Physiologist
Essex Cardiothoracic Centre, Basildon and Thurrock University Hospital
A 60 year old patient with a history of sick sinus syndrome implanted with a DDD pacemaker had a routine 12 lead ECG post implant. The 12 lead ECG is displayed in figure 1. The device settings are as follows.
LR/UR 60/130 bpm
Paced/Sensed AV delay 200/180 ms
A output 3.5 V at 0.35 ms
A sensitivity 1.0 mV
V output 3.5 V at 0.35 ms
V sensitivity 2.5 mV
A 12 lead ECG recorded 60 minutes post dual chamber pacemaker implant
What does the ECG display?
Atrial capture, intermittent atrial undersensing, DDD mode operation.
Atrial capture, atrial undersensing, AAI mode operation.
Atrial capture, intermittent atrial undersensing, AAI mode operation.
Loss of atrial capture, atrial undersensing, DDD mode operation.