Persistent left superior caval vein with absent right superior caval vein: importance of awareness

Abstract

Isolated persistent left superior caval vein is a rare anomaly of the systemic venous return. We describe an unsuccessful pacemaker implantation through the right subclavian vein, which later turned out to be due to a venous anomaly. This case and some other cases show that with the help of a multidetector computed tomography, an isolated persistent left superior caval vein is not a contraindication for subclavian approached pacemaker insertion.

Isolated persistent left superior vena cava in adults: A case report and brief literature review

“…Isolated PLSVC is a result of incomplete degeneration at the proximal end of the left anterior main vein during embryonic development, accompanied by the absence of the right superior vena cava. Almost half of IPLSVC patients have atrial septal defect (ASD), endocardial cushion defect, or cardiac abnormalities in the form of tetralogy of Fallot [6][7]. In addition, due to the disorder of embryonic conduction tissue, patients with congenital venous re ux abnormalities are at risk of various arrhythmias.…”

Incidentally Detected Situs Ambiguous in Adults

“… 15) Secondly, a pacemaker was failed to be inserted in general approach because of persistent left superior vena cava which can be accompanied by SAP. 16) …”