Perioperative and Anesthetic Considerations in Truncus Arteriosus.

Truncus arteriosus is a congenital cardiac lesion in which failure of embryonic truncal septation results in a single semilunar valve and single arterial trunk providing both pulmonary and systemic circulations. Most patients with this lesion are symptomatic in the neonatal period with cyanosis and/or congestive heart failure and undergo complete repair in the first weeks of life. This review will focus on the anatomy, physiology, and perioperative anesthetic management of patients with truncus arteriosus.