[Dialysis catheter placement in a persistent left-sided superior vena cava]

Area of Science:

• Cardiology
• Vascular Surgery
• Radiology

Background:

• Persistent left-sided superior vena cava (PLSVC) is a congenital anomaly affecting up to 0.5% of the population.
• Typically, PLSVC drains into the right atrium via the coronary sinus, often remaining asymptomatic.
• However, anomalous drainage to the left atrium occurs in 10% of cases, posing significant risks.

Observation:

• A 55-year-old patient with known PLSVC underwent dialysis catheter placement.
• Uncertainty regarding the precise venous drainage of the PLSVC led to complications post-procedure.
• This case underscores the challenges in managing central venous access in patients with this anomaly.

Findings:

• The patient experienced complications attributed to the uncertain placement of the dialysis catheter in the context of PLSVC.
• The report emphasizes the potential for left-to-right shunting and paradoxical emboli when PLSVC drains anomalously to the left atrium.
• Accurate imaging is crucial for understanding central venous hemodynamics in these patients.

Implications:

• Pre-procedural imaging to delineate central venous anatomy is recommended when PLSVC is suspected.
• Proper identification of PLSVC drainage pathways is vital to prevent serious complications like paradoxical emboli.
• This case highlights the importance of tailored approaches for central venous catheterization in patients with vascular anomalies.