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Biventricular pacing exclusively via a persistent left-sided superior vena cava: case report
Rebecca E Lane1, Anthony W C Chow, Jamil Mayet
1St. Mary's Hospital, Imperial College School of Medicine, London, United Kingdom. rebecca.lane@ic.ac.uk
Pacing and Clinical Electrophysiology : PACE
|April 25, 2003
Summary
Biventricular pacing with a persistent left superior vena cava is challenging. Specialized cardiac catheters and pacing leads enable left ventricular lead placement via the left superior vena cava when the innominate vein is absent.
Area of Science:
- Cardiology
- Electrophysiology
- Medical Devices
Background:
- Biventricular pacing is crucial for heart failure management.
- A persistent left superior vena cava (PLSVC) presents unique challenges for cardiac lead implantation.
- Conventional right atrial approaches for coronary sinus lead placement are often not feasible with PLSVC.
Observation:
- The absence of an innominate vein necessitates direct coronary sinus catheterization via the PLSVC.
- Catheterizing the coronary sinus "downstream" from the PLSVC ostium involves acute angles.
- This anatomical variation requires specific technical adaptations for successful lead deployment.
Findings:
- Successful left ventricular lead placement is achievable even without an innominate vein.
- The use of preshaped cardiac catheters facilitates navigation through the acute angles of the coronary sinus.
- Over-the-wire pacing leads aid in selective cannulation of target left ventricular branches.
Implications:
- This technique expands the options for biventricular pacing in patients with PLSVC.
- It offers a viable solution for complex congenital venous anomalies.
- Improved patient outcomes through effective heart failure therapy in challenging anatomies.