[Perioperative management of a patient with anomalous origin of the left coronary artery from the pulmonary artery].
Anomalous origin of the left coronary artery from the pulmonary artery is a rare congenital disease, also known as Bland-White-Garland (BWG) syndrome. Mitral valve regurgitation secondary to papillary muscle dysfunction due to myocardial ischemia and progressive left ventricular dysfunction are major clinical manifestations of BWG syndrome. We report perioperative management of a five-year-old patient with BWG syndrome who underwent the Takeuchi procedure making an intrapulmonary baffle using anterior pulmonary artery wall. General anesthesia was maintained with inhalation of sevoflurane in 25-40% oxygen and continuous infusion of remifentanil. Since a decrease in pulmonary artery pressure could induce coronary steal phenomenon, we ventilated the patient with minimally required FI(O2) to maintain Sp(O2) 98-100%, and maintained Pa(CO2) between 40 and 50 mmHg to avoid myocardial ischemia before the induction of cardiopulmonary bypass (CPB). We started continuous infusions of nitroglycerin and milrinone after the initiation of CPB, which were continued through the post-CPB period. The patient was transferred to the ICU and the postoperative course was uneventful. There are two key points in the management of BWG syndrome : the balance between systemic and pulmonary artery pressure in pre-CPB period, and left ventricular support including both inotropes and vasodilators in post-CPB period.
Department of Anesthesiology, Keio University School of Medicine, Tokyo 160-8582.
Yu
Y
Sato
Ryota
R
Sakaguchi
Yasushi
Y
Innami
Nobuyuki
N
Katori
Hiroshi
H
Morisaki
D000768:Anesthesia, General / Q000379:methods*; D002675:Child, Preschool; D003330:Coronary Vessel Anomalies / Q000601:surgery*; D006801:Humans; D008297:Male; D019990:Perioperative Care / Q000379:methods; D011651:Pulmonary Artery / Q000002:abnormalities*