影像学对判断法乐氏四联症术后早期效果的探讨

Judgement of the Early Effect After Correcting Operation of Fallot's Ttralogy by Imaging Methods(A Retrospective Analysis of 100 Cases)

法乐氏四联症(F_4)矫正术后病人发生低心排综合征及肺动脉高压,是影响术后早期效果的主要原因,本文对100例F_4经矫正术后的心血管造影(电影)和超声心动诊断仪的测量结果。对照手术早期效果进行回顾性分析,经测量计算及统计学处理得出:(1)F_4矫正术反指征为:①左室舒张末期指数(LVEDVI)≥20m1/m^2;②肺动脉远段明显狭窄及细小。(2)当LVEDVI≤30m1/m^2和降主动脉横截面积与左、右脉动肺横截面积和之比≥1时,提示极易发生低心排综合征或术后肺动脉高压。

Low cardiac output syndrome andpulmoary hypertension are the tow maincauses which affect the early results ofcorrecting operation in Fallot's tetra-logy.Correcting operations were perfo-rmed on 100 patients between 1986.and1988.Before operation,the left ven-tricular end diastoic volume,the dia-meters of right and left pulmonary at-teries,and the diameters of aorta as-cendens and descendens were measuredby angiocardiography and ultrasoniccardiography.The data were processedstatistically and compared with thepostoperative effect.The followingresults were obtained 1,Contraindica-tion of correcting operation of F_4 were:(1)Left ventricular end diastolicvolu-me index(LVEDVI)≤20ml/m^2;(2)Ma-rkednarrowing and underdeveloped pe-ripheral segments of pulmonary arteries.2.When LVEDVI was less than 30ml/m^2 and the ratio of the cross areaof descending aorta to that of left andright pulmonary arteries was more than1,the low cardiac output syndrome andpulmonary: hypertension were liable tooccur.