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Multicenter experiences with a single lead electrode for dual chamber ICD systems
M Niehaus1, A Schuchert, S Thamasett
1Department of Cardiology and Angiology, Medical School Hannover, Germany. M.Niehaus@T-Online.de
Pacing and Clinical Electrophysiology : PACE
|November 15, 2001
Summary
A new VDD dual chamber lead offers stable atrial and ventricular signal detection for implantable cardioverter-defibrillators (ICDs). This design improves supraventricular tachyarrhythmia identification, reducing inappropriate therapies.
Area of Science:
- Cardiology
- Biomedical Engineering
- Medical Devices
Background:
- Implantable cardioverter-defibrillators (ICDs) require accurate atrial signal monitoring to prevent inappropriate therapies.
- Traditional dual-chamber ICD systems with separate atrial leads can present implantation challenges.
Purpose of the Study:
- To evaluate the efficacy and safety of a novel single-pass VDD lead designed for dual-chamber ICDs.
- To assess the lead's ability to reliably detect atrial and ventricular signals during various cardiac rhythms.
Main Methods:
- A prototype VDD lead was implanted in 30 patients across multiple German centers.
- Atrial and ventricular signals were recorded during sinus rhythm, atrial flutter, atrial fibrillation, and ventricular fibrillation/tachycardia.
- Lead performance metrics including pacing thresholds, impedance, and signal amplitudes were analyzed.
Main Results:
- Successful implantation was achieved in 27 out of 30 patients.
- The lead demonstrated stable atrial and ventricular signal detection across different rhythms.
- High detection rates for P waves (99.6%) and flutter waves (84.4%) were observed, with 56.6% of atrial signals detected during AF.
Conclusions:
- The novel VDD dual-chamber lead provides reliable atrial and ventricular signal detection in ICD patients.
- This lead design facilitates accurate arrhythmia monitoring and may help reduce inappropriate ICD therapies.