MAUDE Adverse Event Report: ABBOTT MEDICAL (CRM-SYLMAR) UNIFY ASSURA CRT-D RF HV; No Match

Model Number	CD3357-40C
Medical Device Problem Codes	Over-Sensing (1438); Pacing Problem (1439); Pacing Asynchronously (1441)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	04/30/2026
Type of Reportable Event	Malfunction
Event or Problem Description
It was reported that the patient presented remotely via merlin.Net.Review of the transmission revealed that the implantable cardioverter defibrillator (icd) exhibited episodes of far r over-sensing, competitive atrial pacing (cap) and inappropriate automatic mode switch (ams).Programming changes were suggested.No intervention was performed and the patient will be further monitored.There were no patient consequences.

• Brand Name: UNIFY ASSURA CRT-D RF HV
• Common Device Name: No Match
• Manufacturer (Section D): ABBOTT MEDICAL (CRM-SYLMAR); 15900 valley view court; sylmar CA 91342
• Manufacturer (Section G): ABBOTT MEDICAL (CRM-SYLMAR); 15900 valley view court; sylmar CA 91342
• Manufacturer Contact: navpreet singh ; 15900 valley view court; sylmar, CA 91342
• MDR Report Key: 25244609
• Report Number: 2017865-2026-10716
• Device Sequence Number: 13152434
• Product Code: NIK
• UDI-Device Identifier: 05414734508186
• UDI-Public: (01)05414734508186(10)A000085479(17)210831
• Combination Product (Y/N): N
• Initial Reporter State: WA
• Initial Reporter Country: US
• PMA/510(K) Number: P030054
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2021
• Serviced by Third Party (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Health Professional,User Facility,Company Representative
• Initial Reporter Occupation: Other Health Care Professional
• Type of Report: Initial
• Report Date (Section B): 05/21/2026

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Is this an Adverse Event Report?: No
• Is this a Product Problem Report?: Yes
• Operator of Device: Health Professional
• Device Expiration Date: 08/31/2021
• Device Model Number: CD3357-40C
• Device Catalogue Number: CD3357-40C
• Device Lot Number: A000085479
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: Yes
• Was the Report Sent to FDA?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 05/06/2026
• Initial Report FDA Received Date: 05/21/2026
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 08/30/2019
• Is the Device Labeled for Single Use? (Y/N): Yes
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Usage of Device: Initial
• Patient Sequence Number: 1
• Concomitant Medical Products and Therapy/Usage Dates: QUICKFLEX.; TENDRIL.
• Patient Sex: Male
• Patient Weight: 80 KG