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目的 探讨超声心动图测定未闭动脉导管内径的可靠性及其在导管法封堵动脉导管未闭症 (PDA)中的临床意义。 方法 4 4例 PDA患者 ,男 18例 ,女 2 6例 ,平均 10 .8± 10 .5岁。应用二维超声心动图 (2 DE)及彩色多普勒血流显像 (CDFI)测定 PDA近端及最小内径 ,并与 X线造影测值及最终所选择的封堵器直径比较。 结果 2 DE及 CDFI显示 PDA解剖全程及测量 PDA内径的成功率分别为 5 7%和 10 0 % ;2 DE对 PDA直径测量的均值显著低于 X线测值及封堵器实际尺寸 ,其回归方程斜率更偏离 1,截距较大 ,估计标准误高 ;CDFI对 PDA直径测量的平均值与 X线测值差异无显著性 ,但平均小于封堵器尺寸 2 .9mm,其回归方程斜率更接近 1,截距小及估计标准误小。 结论 与 2 DE相比 ,CDFI能更准确地测量 PDA直径 ;在导管封堵术中选择封堵器时 ,CDFI的 PDA直径测值可与 X线测量互相补充甚至可替代 X线造影 ,避免穿刺股动脉的技术困难及大量注射造影剂的副作用
Objective To investigate the reliability of echocardiography in determining the diameter of the patent ductus arteriosus and its clinical significance in the treatment of patent ductus arteriosus (PDA) by catheterization. Methods 4 4 PDA patients, 18 males and 26 females, with an average of 10.8 ± 10.5 years. Two-dimensional echocardiography (2 DE) and color Doppler flow imaging (CDFI) were used to determine the proximal and minimum diameter of the PDA. The results were compared with X-ray computed tomography and the diameter of the final occluder selected. Results 2 DE and CDFI showed that the success rates of PDA and PDA were 57% and 100%, respectively. The average of PDA diameter measured by 2 DE was significantly lower than that of X-ray and occluder. The regression The slope of the equation is more deviated from 1, the intercept is larger, and the standard error of estimation is high; the average value of CDFI for PDA diameter measurement is not significantly different from the X-ray measurement, but the average is less than the plug size of 2 .9mm, the slope of the regression equation is more Close to 1, the intercept is small and the estimation standard error is small. Conclusions Compared with 2 DE, CDFI can measure the diameter of PDA more accurately. When selecting occluder in catheter occlusion, PDA diameter measurement of CDFI can complement X-ray and even replace X-ray and avoid puncture Femoral Artery Difficulties and Side Effects of Massive Injections of Contrast Media