Case report describes isolated persistent left superior vena cava

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The venous anomaly of a persistent left superior vena cava (PLSVC) affects 0.3%-0.5% of the general population. PLSVC with absent right superior vena cava, also termed as “isolated PLSVC,” is an extremely rare venous anomaly” Bisoyi et al (2017).

Abstract:

The venous anomaly of a persistent left superior vena cava (PLSVC) affects 0.3%-0.5% of the general population. PLSVC with absent right superior vena cava, also termed as “isolated PLSVC,” is an extremely rare venous anomaly. Almost half of the patients with isolated PLSVC have cardiac anomalies in the form of atrial septal defect, endocardial cushion defects, or tetralogy of Fallot. Isolated PLSVC is usually innocuous.

Its discovery, however, has important clinical implications. It can pose clinical difficulties with central venous access, cardiothoracic surgeries, and pacemaker implantation. When it drains to the left atrium, it may create a right to left shunt. In this case report, we present the incidental finding of isolated PLSVC in a patient who underwent aortic valve replacement. Awareness about this condition and its variations is important to avoid complications.

Reference:

Bisoyi, S., Jagannathan, U., Dash, A.K., Tripathy, S., Mohapatra, R., Pattnaik, N.K., Sahu, S. and Nayak, D. (2017) Isolated persistent left superior vena cava: A case report and its clinical implications. Annals of Cardiac Anaesthesia. 20(1), p.104-107.

doi: 10.4103/0971-9784.197847.

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