ASSURITY MRI (ABBOTT MEDICAL (CRM-SYLMAR)) — Malfunction
An Abbott Medical Assurity MRI pacemaker reportedly exhibited competitive atrial pacing, failure to capture, and inappropriate mode switching. Programming changes were recommended, and no surgical intervention was reported at the time of the event.
Manufacturers of implantable cardiac rhythm management devices, regulatory compliance officers, and clinical safety monitors.
This report indicates potential firmware or algorithmic performance issues related to sensing and pacing logic in MRI-compatible pacemakers. Failure to capture and competitive pacing represent significant clinical risks that may necessitate rigorous post-market trend analysis to determine if the issue is isolated to specific programming configurations or represents a broader technical defect.
Regulatory and clinical teams should monitor for similar pacing anomalies in post-market surveillance data and ensure that programming guidelines effectively mitigate the risk of competitive pacing and mode switch errors. Verification of capture thresholds during routine follow-ups remains a critical clinical checkpoint.
Event type: Malfunction. Device: ASSURITY MRI by ABBOTT MEDICAL (CRM-SYLMAR). IT WAS REPORTED THAT THE PACEMAKER EXHIBITED COMPETITIVE ATRIAL PACING (CAP), FAILURE TO CAPTURE AND INAPPROPRIATE MODE SWITCH. PROGRAMMING CHANGES WERE SUGGESTED. NO INTERVENTION WAS REPORTED. THE PATIENT CONDITION WAS UNKNOWN.
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