Pacemaker implantation in patients with persistent left superior vena cava

Area of Science:

• Cardiovascular medicine
• Thoracic surgery
• Medical device implantation

Background:

• Permanent pacemaker system implantation typically involves the left subclavian vein and superior caval vein.
• Anatomical variations can complicate standard surgical procedures.
• The superior caval vein is a critical vessel for cardiac access.

Observation:

• Three patients presented with a persistent left superior caval vein during pacemaker implantation.
• This anomaly required procedural modification.
• Persistent left superior caval vein is a known, though less common, thoracic vessel anomaly.

Findings:

• The persistent left superior caval vein can alter the typical pathway for pacemaker lead placement.
• Successful implantation is achievable with awareness and potential procedural adjustments.
• Literature review confirms this anomaly's occurrence in thoracic vessel variations.

Implications:

• Awareness of persistent left superior caval vein is crucial for electrophysiologists and cardiac surgeons.
• Preoperative imaging may help identify this anomaly.
• Management strategies should be considered for safe pacemaker system implantation in affected patients.