Truncus Arteriosus

Description

Truncus Arteriosus is a congenital cardiovascular anomaly characterized by a single arterial vessel (truncus) with one valve arising from the heart. The truncus overrides a large perimembranous ventricular septal defect (VSD) and receives mixed blood from both ventricles and supplies blood to the pulmonary, systemic, and coronary circulations the ratio of the bloodflow vary according to the different vascular resistances. Without surgical treatment, most patients die within infancy. Various operative techniques have evolved over the past 50 years.Careful titration of anesthetic agents and careful monitoring of their hemodynamic effects and appropriate measures to adjust pulmonary (PVR) and systemic vascular (SVR) resistances and cardiac performance are probably more important than the selection of a particular anesthetic agent. Postoperatively, low cardiac output can be expected because of high PVR and right ventricular failure.