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Anatomical Reconstructions of the Human Cardiac Venous System using Contrast-computed Tomography of Perfusion-fixed Specimens
Published on: April 18, 2013
How many leads through persistent left superior vein cava and coronary sinus?
Giovanni Morani1, Corinna Bergamini, Mauro Toniolo
1Division of Cardiology, University of Verona, Verona, Italy. giovanni.morani@azosp.vr.it
Journal of Electrocardiology
|February 16, 2010
Summary
Upgrading cardiac resynchronization therapy devices can be complex with persistent left superior vena cava (PLSVC). This case details a novel 4-lead system implantation via PLSVC and a dilated coronary sinus (CS).
Area of Science:
- Cardiology
- Medical Devices
- Electrophysiology
Background:
- Cardiac resynchronization therapy (CRT) is increasingly indicated.
- Device upgrades are common in CRT patients.
- Persistent left superior vena cava (PLSVC) is the most common venous anomaly, potentially complicating procedures.
Observation:
- A case of upgrading a dual-chamber pacemaker to a 4-lead CRT/defibrillation system is presented.
- The procedure involved a persistent left superior vena cava (PLSVC) draining into a dilated coronary sinus (CS).
- This specific venous anatomy and lead configuration have not been previously described.
Findings:
- A unique technical approach was employed for the 4-lead system implantation.
- Successful implantation was achieved despite the challenging venous anatomy.
Implications:
- This case highlights the feasibility of complex CRT upgrades in patients with PLSVC.
- It raises critical clinical questions regarding the maximum number of leads that can be safely placed in the CS and PLSVC.
- Potential hemodynamic impacts and risks of venous drainage compromise require further investigation.
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