Cyanosis produced by superior vena caval stenosis

The Annals of Thoracic Surgery
Brian E KogonWendy M Book


Superior vena cava syndrome is a rare complication of pacemaker implantation. Narrowing and occlusion of the superior vena cava is often asymptomatic due to the formation of decompressive collateral pathways to the right atrium. We present a case in which an anomalous venous pathway allowed decompression of the systemic venous return into the left atrium, resulting in arterial desaturation, cyanosis, and fatigue.


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