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目的：研究法乐四联症患者肺动脉狭窄和左心功能与手术关系。材料和方法：采用ＤＳＡ２４００型数字减影血管造影机（ＤＳＡ）测量了６３例法乐四联症患者心血管造影图像，并与手术结果进行对照分析。结果：肺动脉指数（ＰＡＩ）、ＭｃＧｏｏｎ比值、左心室射血指数（ＳＶＩ）与术后右心室／左心室压力比值呈负相关。结论：ＰＡＩ＞１５０ｍｍ２／ＢＳＡ，ＭｃＧｏｏｎ比值＞１．８，ＳＶＩ＞３０ｍｌ／ｍ２可作为法乐四联症心内修复术选择的定量指标。
Objective: To study the relationship between pulmonary stenosis, left ventricular function and surgery in patients with tetralogy of Fallot. Materials and Methods: The angiographic images of 63 patients with tetralogy of Fallot were measured by DSA-2400 digital subtraction angiography (DSA) instrument and compared with the results of surgery. Results: Pulmonary artery index (PAI), McGoon ratio, left ventricular ejection fraction (SVI) and postoperative right ventricular / left ventricular pressure ratio were negatively correlated. Conclusion: PAI> 150mm2 / BSA, McGoon ratio> 1.8 and SVI> 30ml / m2 can be used as quantitative indexes for the choice of cardiomyopathy for tetralogy of Fallot.