Pacemaker system replacement under local anesthesia allowing MRI access 7 years after the initial surgery: Two case reports.

Older pacemaker systems, which are magnetic resonance imaging (MRI) incompatible, require replacement with compatible systems when patients are in need of MRI. Replacement involves extraction of the pacing lead, which is usually done with a laser sheath under general anesthesia. We report two cases of complete pacing system replacements allowing patient access to MRI. Both replacements were made under local anesthesia and without the use of special devices over 6 years after the initial surgery. Both replacements used retractable screw-in leads with a cut-down of cephalic or external jugular veins performed during the initial surgeries. Case 1 involved a 79-year-old man with cerebral ischemia, and case 2 involved a 70-year-old man with spinal canal stenosis. With careful management, it is possible to replace an entire pacing system under local anesthesia without additional devices.