英文誌(2004-)
Original Article(原著)
(0538 - 0545)
種々の先天性心疾患における動脈管の形態と閉鎖過程についての心エコー図,ドプラ法を用いた研究
Two-dimensional and Doppler Echocardiographic Study of the Configuration and the Closure of the Ductus Arteriosus in Newborn and Infants with Congenital Heart Disease
穂積 元3, 平石 聰2, 古木 量一郎1, 鶴野 和則1
Hajime HOTSUMI3, Satoshi HIRAISHI2, Ryoichiro FURUKI1, Kazunori TSURUNO1
1北里大学病院臨床検査部, 2北里大学病院小児科, 3本多記念東北循環器科病院
1Department of Clinical Laboratory, Kitasato University Hospital, 2Department of Pediatrics, Kitasato University Hospital, 3Honda Memorial Tohoku Cardio-Vascular Medical Center
キーワード : Congenital heart disease, Patent ductus arteriosus, Echocardiography
High-parasternal cross-sectional echocardiographic technique was used to visualize the ductus arterious (DA) in 25 neonates and infants with various congenital heart diseases (CHD). Our method ennabled to image the DA along its entire length from the pulmonary to aortic ends. Abnormal Doppler signals indicating left-to-right or bidirectional shunt was obtained at the site of DA in all patiens with pulsed Doppler technique. The configuration of the DA was divided into two types by which the inferior angle between the DA and the descending aorta was acute (Type II) or obtuse (Type I). The DA appeared to be cylindrical in patients with Type I and tortuous in patient with Type II. The latter type of the DA was seen in the patients with tricuspid atresia, pulmonary atresia and severe pulmonary valve stenosis with or without ventricular septal defect. Futhermore in 11 patients, we observed the morphological changes of the DA in the course of the spontaneous closure using two-dimensional Doppler echocardiography. Irrespective of types of the DA, closure of the DA began to localizedly narrow at the sites of the pulmonary end or in the middle portion within the DA, and subsequently, ductal narrowing progressed along the entire length.