Kawahira Y, Kishimoto H, Iio M, Ikawa S, Kume Y, Maeno T, Matsushita T, Inamura N, Nakada T
Department of Cardiovascular Surgery, Osaka Medical Center and Research Institute for Maternal and Child Health.
Nihon Kyobu Geka Gakkai Zasshi. 1994 Feb;42(2):233-6.
Left ventricular outflow tract (LVOT) dimension was measured in seven patients with coarctation (CoA) or interruption (IAA) of the aorta before and after aortic arch repair and pulmonary artery banding. The age of patients ranged 3 to 69 (mean 16) days, the weight 3.0 to 3.9 (mean 3.4) kg. Associated cardiac anomalies were VSD in 6, MA and DORV in 1. In five patients compared by ultrasound, preoperative LVOT dimension ranged from 3.5 to 5.0 (mean 4.4) mm with the ratio to the normal aortic valve dimension (n-AVD; 16.6 x BSA0.6) from 54 to 82 (mean 69)%. Postoperative dimension increased 5.0 to 7.4 (mean 5.7) mm and the ratio to the n-AVD increased 65 to 89 (mean 80)%. In three patients compared by LV graphy, preoperative LVOT dimension ranged from 4.0 to 4.5 (4.2) mm and the ratio ranged from 61 to 72 (68)%. Postoperative dimension increased from 4.5 to 6.7 (5.3) mm, and 74 to 80 (78)% to n-AVD after operation. Postoperative pressure gradients between LV and ascending aorta in each patient were 1 to 9 (mean 6) mmHg. In any patients, LVOT obstruction did not advance after aortic arch repair and pulmonary artery banding.
在7例主动脉缩窄（CoA）或主动脉中断（IAA）患者中，于主动脉弓修复和肺动脉束带术前后测量左心室流出道（LVOT）尺寸。患者年龄3至69（平均16）天，体重3.0至3.9（平均3.4）千克。合并心脏异常情况为：6例室间隔缺损（VSD），1例大动脉转位（MA）和右心室双出口（DORV）。通过超声检查的5例患者中，术前LVOT尺寸为3.5至5.0（平均4.4）毫米，与正常主动脉瓣尺寸（n-AVD；16.6×体表面积0.6）的比值为54至82（平均69）%。术后尺寸增至5.0至7.4（平均5.7）毫米，与n-AVD的比值增至65至89（平均80）%。通过左心室造影检查的3例患者中，术前LVOT尺寸为4.0至4.5（4.2）毫米，比值为61至72（68）%。术后尺寸从4.5增至6.7（5.3）毫米，术后与n-AVD的比值为74至80（78）%。每位患者术后左心室与升主动脉之间的压力阶差为1至9（平均6）毫米汞柱。在任何患者中，主动脉弓修复和肺动脉束带术后LVOT梗阻均未进展。
