Abstract
Several methodologies are typically employed to extract chronically-implanted pacing leads including: laser catheter systems, radio frequency catheters, mechanical cutting catheters, and/or direct traction. In the present study, Visible Heart® methodologies were employed to obtain novel internal and external views of such extractions. Utilizing standard cardioplegia procedures, canine hearts (n∈=∈3) with chronically-implanted endocardial pacing leads were explanted to a unique isolated heart apparatus. Modified Krebs-Henseleit buffer allowed for clear endocardial imaging with endoscopic video cameras inserted into the cardiac chambers. Leads were extracted using: (1) laser system with sheath; (2) dissection sheath with incorporated bipolar tungsten electrode; (3) non-powered mechanical sheath; or (4) direct traction. Resultant images provide a novel perspective regarding lead extraction methodologies and the imposed force on an encapsulated lead and on the great vessels and/or heart itself; this understanding may improve the outcome and safety of future lead extractions.
Original language | English (US) |
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Pages (from-to) | 27-31 |
Number of pages | 5 |
Journal | Journal of Interventional Cardiac Electrophysiology |
Volume | 24 |
Issue number | 1 |
DOIs | |
State | Published - Jan 2009 |
Externally published | Yes |
Keywords
- Encapsulation
- Imaging
- Laser system
- Lead extraction
- RF cutting
ASJC Scopus subject areas
- Cardiology and Cardiovascular Medicine
- Physiology (medical)