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[Heart pacemaker stimulation within a coronary vein in persistent left superior vena cava]
Insights
Persistent left superior vena cava, a rare heart anomaly, can necessitate cardiac pacing. A novel approach via the left cephalic vein successfully positioned pacing leads, avoiding complications and repetitive interventions.
Area of Science:
- Cardiology
- Medical Malformations
- Electrophysiology
Background:
- Persistent left superior vena cava (PLSVC) is a rare congenital anomaly.
- PLSVC typically causes no functional disturbance but can complicate medical procedures.
- Dextroposition of the ventricle is a rare cardiac malformation.
Observation:
- A case of PLSVC with dextroposition of the ventricle required cardiac pacing.
- Standard pacing approaches were precluded by prior complications.
- An alternative approach utilized the left cephalic vein for electrode insertion.
Findings:
- The pacing electrode was successfully and stably positioned in the coronary vein (vena cordis media).
- No pacemaker malfunction, increased pacing thresholds, electrode perforation, or coronary vein thrombosis occurred.
- Electrocardiogram during pacing demonstrated a right bundle-branch block pattern.
Implications:
- This case demonstrates a viable alternative strategy for cardiac pacing in patients with PLSVC and complex cardiac anatomy.
- The described technique offers a method to avoid repeat interventions in challenging pacing scenarios.
- Successful lead placement in the coronary vein suggests its potential as an alternative target site.
Abstract:
Persistent left superior vena cava is a rare malformation that causes no functional disturbance. In one case of this anomaly associated with dextropositio ventriculi cardiac pacing was necessary using the approach from the left vena cephalica because of a variety of preceding problems and severe complications. The electrode could be stably positioned in the coronary vein, vena cordis media. The evidence of pacemaker malfunction conditioned by increase of threshold, of the occurrence of electrode perforation or electrode-induced coronary vein thrombosis has not been observed. The electrocardiogram during stimulation shows the feature of right bundle-branch block. The described method was used to avoid a repetitive intervention.