MAUDE Adverse Event Report: ABBOTT NEUTRINO NXT BIPOLAR DF1 HF; NO MATCH

Model Number	CDHFA600B
Medical Device Problem Code	Pacing Intermittently (1443)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	03/05/2026
Type of Reportable Event	Malfunction
Event or Problem Description
It was reported that during a follow up in clinic, intermittent loss of pacing was noted on the device.Abbott technical support was contacted, however, no intervention has been performed at this time.The patient was in stable condition and will continue to be monitored.
Additional Manufacturer Narrative
The reported event of failure to deliver ventricular pacing was confirmed.Based on the information provided, it was determined that a detection of the crosstalk event overlapping with an end of the ventricular blanking period resulted in inappropriate inhibition of ventricular pacing and also a missing vs (ventricular sensing) marker.The reported event was caused by a limitation of firmware implementation.

• Brand Name: NEUTRINO NXT BIPOLAR DF1 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: 24663211
• Report Number: 2017865-2026-05925
• Device Sequence Number: 5054906
• Product Code: NIK
• UDI-Device Identifier: 05415067050076
• UDI-Public: (01)05415067050076(10)A000180008(17)270930
• 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: 2026
• 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): 06/12/2026

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: CDHFA600B
• Device Catalogue Number: CDHFA600B
• Device Lot Number: A000180008
• 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: 03/05/2026
• Supplement Date Received by Manufacturer: 05/22/2026
• Initial Report FDA Received Date: 03/23/2026
• Supplement Report FDA Received Date: 06/12/2026
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 10/28/2025
• 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