MAUDE Adverse Event Report: ABBOTT NEUTRINO NXT BIPOLAR DF4 HF; NO MATCH

Model Number	CDHFA600D
Medical Device Problem Code	Over-Sensing (1438)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	02/28/2026
Type of Reportable Event	Malfunction
Event or Problem Description
It was reported that during a remote follow up, post-paced t-wave oversensing (pptwos) was noted on the device.Abbott technical support was contacted and the device was reprogrammed.The patient was in stable condition.
Additional Manufacturer Narrative
The reported event of t-wave over-sensing was confirmed.Device records were provided for analysis.Based on the information provided, it was determined that the device was performing per programmed settings.Additional programming changes can be made to minimize the over-sensing.

• Brand Name: NEUTRINO NXT BIPOLAR DF4 HF
• Common Device Name: NO MATCH
• Manufacturer (Section D): ABBOTT; 15900 valley view court; sylmar CA 91342
• Manufacturer (Section G): ABBOTT; 15900 valley view court; sylmar CA 91342
• Manufacturer Contact: navpreet singh ; 15900 valley view court; sylmar, CA 91342
• MDR Report Key: 24706770
• Report Number: 2017865-2026-06311
• Device Sequence Number: 21442408
• Product Code: NIK
• UDI-Device Identifier: 05415067050045
• UDI-Public: (01)05415067050045(10)S000105147(17)270430
• Combination Product (Y/N): N
• Initial Reporter Country: SP
• PMA/510(K) Number: P030054
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2025
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: Foreign,Health Professional,Company Representative
• Initial Reporter Occupation: Physician
• Type of Report: Initial,Followup
• Report Date (Section B): 05/18/2026

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 Model Number: CDHFA600D
• Device Catalogue Number: CDHFA600D
• Device Lot Number: S000105147
• 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: 03/02/2026
• Supplement Date Received by Manufacturer: 05/07/2026
• Initial Report FDA Received Date: 03/26/2026
• Supplement Report FDA Received Date: 05/18/2026
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 06/13/2025
• 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
• Patient Sex: Unknown