Table 1. Patients at Minneapolis Heart Institute With Pacemaker Failures.
| Patient No. | Cardiac Disease | Rhythm/Conduction | PG Implant Time, y | Failure Sign | Clinical Consequence | Results of Manufacturer’s Analysis |
|---|---|---|---|---|---|---|
| 1 | RHD; MVR; LVD | AF/CHB; AVN ablation | 6.7 | Rapid battery depletion; intermittent no output; asystole during telemetry | Recurrent syncope | High internal battery impedance |
| 2 | ICM; CABG | AF/CHB | 7.8 | No output | Syncope; dyspnea | Lifted bond wires on electronic circuit |
| 3 | Hypertension | AF/CHB; AVN ablation | 6.6 | Rapid battery depletion; no output | Syncope; dyspnea | High internal battery impedance |
| 4 | Pulmonary hypertension | AF/CHB; AVN ablation | 8.7 | Intermittent no output | Syncope; dyspnea | High internal battery impedance |
| 5 | MVR; HFpEF | AF/CHB | 6.1 | Intermittent no output | Syncope | High internal battery impedance |
Abbreviations: AF, atrial fibrillation; AVN, atrioventricular node; CABG, coronary artery bypass surgery; CHB, complete heart block; HFpEF, heart failure with preserved ejection fraction; ICM, ischemic cardiomyopathy; LVD, left ventricular dysfunction; MVR, mitral valve replacement; PG, pulse generator; RHD, rheumatic heart disease.