Incident description: per physician: patient device near elective replacement indicator (eri).Received unusual fault code and went into safety mode.Patient was experiencing 12 second pauses, and only being paced intermittently.Device replaced with a new device.From the ep procedural note: indication: the patient elderly presented with preexisting pacemaker placed ~6 years ago, with device approaching elective replacement indicator, but tripped to a 'fault' mode premature with failure to stimulate and resultant pauses of 12 seconds.The patient underwent biventricular pacemaker generator change.There were no complications.Equipment specifics: right atrial lead: manufacturer: guidant, model #: 4470-52, location: right atrium , fixation: active, sensing: 1.8 mv, threshold: fibrillation, impedance: 380 ohms.Right ventricular lead: manufacturer: guidant, model #: 4088-59, location: right ventricle, fixation: active, sensing: 4.1 mv, threshold: 1.1 v @ 0.4 msec, impedance: 580 ohms.Left ventricular lead: manufacturer: guidant, model #: easytrak 2-80, location: left ventricle , fixation: passive, sensing: 15.0 mv, threshold: 2.2 v @ 1.5 msec, impedance: 613 ohms.Explanted generator: manufacturer: boston scientific, model #: v173, final settings mode: vvir, lower rate: 70, upper rate: 120, right atrial output right ventricular output 2.5 v @ 0.4 ms, left ventricular output 3.2 v @ 0.4 ms.Impression: atrioventricular block, history of cardiomyopathy.Permanent atrial fibrillation.Device replaced because of 'fault' mode, prior to elective replacement indicator biventricular pacemaker generator change.
|