Guidant Corp. initially warned physicians about problems with these devices on July 18, 2005.
Problem
Degradation in a sealing component can result in a higher than normal moisture content within the
pacemaker case. The problem can lead to one or more of the following:
Premature battery depletion resulting in loss of telemetry and/or loss of pacing output without
warning
Inappropriate accelerometer function (if programmed ON), resulting in:
- sustained pacing at the programmed maximum sensor rate (MSR)
- lack of appropriate accelerometer rate response during activity
Appearance of a reset warning message upon interrogation
Inappropriate early display of replacement indicators
Reports of Injuries or Failures
As of July 11, 2005, Guidant Corp. announced they had received 69 reports of devices exhibiting
this failure mode. The company has confirmed the failure in 52 of those devices and is testing the
failure in 13 other devices.
Models
This problem affects all models manufactured between November 25, 1997 and October 26,
2000.
Recommendation
Patients should consult with their physicians to discuss possible removal of the device.
Patients also should continue with ongoing monitoring to detect any problems with the device.