Value of color Doppler echocardiography in the elderly during the procedure of patent ductus arteriosus occlusion
Background To investigate the value of color Doppler echocardiography (CDE) in the closure of patent ductus arteriosus (PDA) in the elderly.Methods Before the occlusion, screening the indicantions for twenty-five elderly patients with PDA by CDE.Using the shunt flow signal of color Doppler flow imaging (CDFI) to estimate the pulmonary side diameter of PDA, compare with the angiocardiography and determine its accuracy through statistics.Using the continuous wave Doppler (CW) to measure peak velocity of tricuspid regurgitation and estimate cross-tricuspid pressure gradient according to the simplified Bernoulli equation △P=4V2, together with the inherent right atrial pressure to estimate pulmonary artery pressure.Then compare cross-tricuspid pressure gradient and pulmonary artery pressure with cardiac catheterization.Determine its accuracy through statistics.All patients underwent interventional therapy and determine the efficacy of occlusion by CDE.
HOU Huan-ju ZHU Xian-yang ZHANG Duan-zhen WANG Qi-guang HAN Xiu-min DENG Dong-an
Department of Congenital Heart Disease,General Hospital of Shenyang Military Area Command,No.83,Wenhua Road,Shenhe District,Shenyang,Liaoning 110840,China
国内会议
北京
英文
217-217
2013-03-20（万方平台首次上网日期，不代表论文的发表时间）