Three patients with cardiac pacemakers underwent four transurethral electrocautery procedures, without pacemaker interference. Electrical interference which could potentially cause cardiac arrhythmias was prevented by utilizing a well-shielded cardiac pacemaker, by proper grounding of all medical electronic equipment in use on or near the patient, and by keeping the electrocautery circuit below the pacemaker by low placement of the electrocautery ground plate. Additional safety precautions included maintenance of a normal blood volume and cardiac monitoring with an external pacemaker-defibrillator cardioscope.
Fein RL. Transurethral Electrocautery Procedures in Patients With Cardiac Pacemakers. JAMA. 1967;202(1):7-9. doi:10.1001/jama.1967.03130140065007