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本文研究75例经心导管和心脏手术证实的继发孔房缺患者的超声心动图改变。比较二维超声心动图的指标与心导管的血氧测定的左到右分流量和手术中房缺的直径,发现:①剑突下二维超声心动图可正确可靠地测定房缺的直径;②二项新的超声指标房缺直径≥2.0cm 和左右室舒张末期内径比率≥1.1 可用于估计左到右的分流量大于40%。因而,可无创伤性地为心外科提供房缺修补术的指征。
This article studies the changes of echocardiography in 75 patients with secondary atrioventricular anterior chamber confirmed by cardiac catheterization and cardiac surgery. Comparing the indexes of two-dimensional echocardiography with the left-to-right shunt of cardiac catheterization and the diameter of atrial septal defect, we found: ①The diameter of atrial septal defect can be determined accurately and reliably by two-dimensional echocardiography; ② ② two new ultrasound index atrial appendage ≥ 2.0cm and left ventricular end-diastolic diameter ratio ≥ 1.1 can be used to estimate left to right shunt greater than 40%. Thus, cardiac surgery may provide indications of atrial secundum repair non-invasively.