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Diagnostic Approach to Suspected Lead Failure.
Anand Thiyagarajah1, Marc Strik2, Sylvain Ploux2
1Department of Cardiology, University of Adelaide and Royal Adelaide Hospital, Port Road, Adelaide, SA 5000, Australia; CHU de Bordeaux, service de Cardiologie-électrophysiologie et stimulation cardiaque, INSERM, U 1045, Bordeaux F-33000, France; Department of Cardiology-Electrophysiology and Cardiac Pacing, Univ. Bordeaux, INSERM, CRCTB, U 1045, IHU Liryc, Bordeaux F-33000, France.
Transvenous lead failure in cardiac devices is common. Device algorithms and remote monitoring can help detect issues early, preventing complications like pacing inhibition and inappropriate shocks.
Area of Science:
- Cardiology
- Biomedical Engineering
Background:
- Transvenous lead failure affects 1-2% of cardiac pacing and defibrillation patients.
- Oversensing of non-physiological signals often precedes lead impedance changes.
- Lead failures can cause serious complications including pacing inhibition and inappropriate shocks.
Purpose of the Study:
- To review the mechanisms of transvenous lead failure.
- To propose a diagnostic approach for suspected lead failure.
- To highlight the role of device algorithms and remote monitoring.
Main Methods:
- Literature review on transvenous lead failure mechanisms.
- Analysis of device-based algorithms for signal detection.
- Discussion of remote monitoring applications.
Main Results:
- Lead failure mechanisms include insulation defects, conductor fractures, and connector issues.
- Oversensing is a key indicator of potential lead malfunction.
- Device algorithms can identify abnormal signals indicative of lead problems.
Conclusions:
- Early diagnosis and management of lead failure are crucial.
- Integrating device algorithms with remote monitoring improves patient outcomes.
- A systematic diagnostic approach aids in timely intervention for lead failure.
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