MAUDE Adverse Event Report: BOSTON SCIENTIFIC CORPORATION RESONATE? EL ICD VR; Implantable Cardioverter Defibrillator (ICD)

Model Number	D432
Medical Device Problem Codes	Pacing Problem (1439); Defibrillation/Stimulation Problem (1573); Inappropriate/Inadequate Shock/Stimulation (1574)
Health Effect - Clinical Codes	Ventricular Fibrillation (2130); Shock from Patient Lead(s) (3162)
Date of Event	06/23/2026
Type of Reportable Event	Serious Injury
Event or Problem Description
It was reported that this implantable cardioverter defibrillator (icd) delivered potentially inappropriate anti-tachycardia pacing (atp) and shocks for an atrial arrhythmia with rapid ventricular response (rvr).Additionally, a shock was found to potentially accelerate the rhythm further into ventricular fibrillation (vf).Therapy was exhausted and the rhythm was found to have slowed down to the monitor only zone.It was hard for technical services (ts) to determine if the device therapy caused the acceleration in heart rate or if it was due to the patient condition but could not rule out the shock delivered changed the rhythm.This icd remains in service.No additional adverse patient effects were reported.
Event or Problem Description
It was reported that this implantable cardioverter defibrillator (icd) delivered potentially inappropriate anti-tachycardia pacing (atp) and shocks for an atrial arrhythmia with rapid ventricular response (rvr).Additionally, a shock was found to potentially accelerate the rhythm further into ventricular fibrillation (vf).Therapy was exhausted and the rhythm was found to have slowed down to the monitor only zone.It was hard for technical services (ts) to determine if the device therapy caused the acceleration in heart rate or if it was due to the patient condition but could not rule out the shock delivered changed the rhythm.This icd remains in service.No additional adverse patient effects were reported.
Additional Manufacturer Narrative
This product has not been returned to boston scientific, and as a result, a laboratory analysis could not be conducted.A review of the device history record (dhr) was performed.The review of the dhr identified that there were no process related non-conformances, scrap, or rework performed during the production that could explain the event.The reviews ensure each device meets specification prior to release for use.There is no indication the device manufacturing process contributed to the reported complaint.A risk review was completed and confirmed that the event of inappropriate shock was defined in the risk documentation.This event type has been accounted for during product risk analysis to support acceptable risk benefit for the product.Review of labeling determined that the complaint situation was listed in the manual.There was no indication in the complaint that the product was not used in accordance to labeling.The manual was unlikely to be the cause of the reported complaint; translation, wording, or graphics does not require further review.Based on a thorough review of the reported complaint, boston scientific has assigned an investigation conclusion code of cause not established.

• Brand Name: RESONATE? EL ICD VR
• Common Device Name: Implantable Cardioverter Defibrillator (ICD)
• Manufacturer (Section D): BOSTON SCIENTIFIC CORPORATION; 4100 hamline avenue north; saint paul MN 55112
• Manufacturer (Section G): Boston Scientific Corporation; cashel road; clonmel ; EI
• Manufacturer Contact: mark mischke ; 4100 hamline avenue north; saint paul, MN 55112 ; +1(612)875-7234
• MDR Report Key: 25896722
• Report Number: 2124215-2026-39362
• Device Sequence Number: 21367613
• Product Code: LWS
• UDI-Device Identifier: 00802526588044
• UDI-Public: (01)00802526588044(17)251203
• Combination Product (Y/N): N
• Initial Reporter State: FL
• Initial Reporter Country: US
• PMA/510(K) Number: P960040
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2025
• Reporter Type: Manufacturer
• Report Source: Health Professional
• Initial Reporter Occupation: Other Health Care Professional
• Type of Report: Initial,Followup
• Report Date (Section B): 09/23/2026

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Is this an Adverse Event Report?: Yes
• Is this a Product Problem Report?: Yes
• Operator of Device: Lay User/Patient
• Device Expiration Date: 12/03/2025
• Device Model Number: D432
• Device Catalogue Number: D432
• Device Lot Number: 328889
• 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: 06/23/2026
• Supplement Date Received by Manufacturer: 09/18/2026
• Initial Report FDA Received Date: 07/21/2026
• Supplement Report FDA Received Date: 09/23/2026
• Date Device Manufactured: 12/12/2023
• 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
• Outcome Attributed to Adverse Event: Other
• Patient Age: 71 YR
• Patient Sex: Male