Management of DDDR Pacemakers in Surgery

Preoperative Evaluation

The American Heart Association recommends identifying the type of device, manufacturer, and model through review of medical records, manufacturer's identification card, chest radiograph, and ECG for patients with DDDR pacemakers undergoing surgery 1, 2, 3
Determining pacemaker dependency by reviewing medical history for bradyarrhythmias that caused syncope or other symptoms requiring pacemaker implantation is crucial 4, 3
Evaluating device function within 3-6 months before significant surgical procedures, determining programmed configurations and battery status, is essential 4, 3

The American College of Cardiology states that the risk of electromagnetic interference (EMI) depends on critical factors, including surgery location, with surgeries above the umbilicus having a higher risk of EMI 1, 2, 3
The type of electrocautery used also affects EMI risk, with bipolar electrocautery presenting less risk than monopolar, and ultrasonic scalpels being unlikely to cause EMI 1, 2, 3
The distance between the electrocautery unit and the pacemaker generator/cables also influences EMI risk, with greater distance reducing risk 1, 2, 3

Continuous monitoring of ECG and pulse (plethysmography or arterial line) is obligatory during surgery, as electrocautery interferes with ECG recording 4, 3
Using bipolar electrocautery when possible minimizes the risk of EMI 1, 2, 3
Applying short, intermittent, and irregular bursts of electrocautery at the lowest feasible energy level reduces EMI risk 1, 2, 3

The American Society of Anesthesiologists recommends restoring device function before hospital discharge, including formal interrogation of the device using a programmer to verify appropriate configurations have been restored 5, 3
Reprogramming to original configurations, including DDD or DDDR mode with appropriate detection and pacing parameters, is necessary 5, 3
Continuous monitoring of heart rate and rhythm during the immediate postoperative period is crucial 5, 3
Evaluating pacemaker function, particularly if the device was reprogrammed before surgery, is essential 4, 3