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Updated: Aug 17, 2025

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A New Single Chamber Implantable Defibrillator with Atrial Sensing: A Practical Demonstration of Sensing and Ease of Implantation
Published on: February 28, 2012
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Simultaneous Leadless Pacemaker and Subcutaneous ICD Implantation With Intraoperative Screening: Workflow in Two
Jonathan Nieves1, David B Laslett1, Anuj Basil1
1Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania, USA.
JACC. Case Reports
|December 12, 2022
Summary
A new subcutaneous implantable cardioverter-defibrillator (ICD) and leadless pacemaker system is being developed. This system ensures proper sensing of pacemaker signals by the ICD for patients needing both therapies.
Area of Science:
- Cardiology
- Biomedical Engineering
- Medical Devices
Background:
- Patients requiring both pacing and implantable cardioverter-defibrillator (ICD) therapy face challenges with existing systems.
- Development of a communicating subcutaneous ICD and leadless pacemaker system aims to address these needs.
- Ensuring appropriate sensing of paced waveforms by the subcutaneous ICD is critical for device function and patient safety.
Observation:
- Two patient cases are presented to illustrate the approach and workflow for integrating a leadless pacemaker with a subcutaneous ICD.
- The focus is on verifying the sensing capabilities of the subcutaneous ICD in response to pacing from the leadless pacemaker.
Findings:
- The presented cases demonstrate a viable workflow for assessing the sensing of paced morphology by a subcutaneous ICD in a combined leadless pacemaker system.
- Successful integration and appropriate sensing were observed, validating the approach.
Implications:
- This approach facilitates the development and clinical implementation of combined leadless pacemaker and subcutaneous ICD systems.
- It offers a potential solution for patients needing both bradycardia pacing and defibrillation therapy.
- Further validation in larger cohorts is warranted to confirm safety and efficacy.
Keywords:
CIED, cardiovascular implantable electronic deviceICD, implantable cardioverter-defibrillatorLP, leadless pacemakerLVAD, left ventricular assist deviceS-ICD, subcutaneous implantable cardioverter-defibrillatorVF, ventricular fibrillationbradycardiacardiac pacemakercardiomyopathycardioversionprimary preventionsecondary preventionventricular fibrillationventricular tachycardia
