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[Duplication of the vena cava]
P Yazbeck1, A Yazigi, E Nasser
1Service d'Anesthésie-Réanimation, Hôtel-Dieu de France, Beyrouth, Liban.
Insights
Bilateral superior vena cava is a rare congenital anomaly where a left superior vena cava also exists. Awareness is crucial for anesthesiologists and intensivists to prevent misinterpreting catheter placement, avoiding unnecessary removal and reinsertion.
Area of Science:
- Cardiovascular anatomy
- Congenital anomalies
- Medical imaging
Background:
- Congenital anomalies of the great veins are uncommon but clinically significant.
- The superior vena cava (SVC) is a major vein returning blood to the heart.
- Understanding venous anatomy is critical for invasive procedures.
Observation:
- Bilateral superior vena cava (BSVC) is a condition where both a right and left SVC are present.
- This anomaly can lead to misinterpretation of central venous catheter (CVC) tip position.
- Left-sided SVC is the more common variant in BSVC.
Findings:
- The presence of a left SVC can mimic catheter malposition if not recognized.
- Misinterpretation can lead to premature catheter removal and reinsertion.
- BSVC is generally well-tolerated hemodynamically.
Implications:
- Anesthesiologists and intensivists must be aware of BSVC to accurately assess CVC placement.
- Proper identification prevents iatrogenic complications and ensures effective venous access.
- Knowledge of BSVC aids in precise interpretation of imaging studies and procedural guidance.
Abstract:
Bilateral superior vena cava is a congenital anomaly of which the anaesthesiologist and intensivist should be aware in order to not mistake catheters placed in the left superior vena cava as being malpositioned outside of the venous circulation. These malpositions generally require catheter removal and reinsertion. This anomaly although rare is not-so-unusual. It is generally well tolerated.