二维Doppler超声评价四联症Qp/Qs比值的探讨

摘要

本文报道二维Doppler超声测量Qp/Qs的新方法.揭示了Qp与二尖瓣血流积分与瓣环内径乘积(MVID)呈正相关,Qs与三尖瓣血流积分瓣环乘积(TVID)呈正相关,即可用MVID/TVID代表Qp/Qs,用之测量正常人Qp/Qs接近1(0.93±0.083),15例四联症为0.656±0.167,与血红蛋白浓度负相关.结果表明Doppler技术常规测量二尖瓣血流量与三尖瓣血流量(Qp/Qs)比值方法能够简化.%It was developed that a new method for measuring the ratio of pulmonary blood flow tosystemic biood flow by two-dimensional Doppler echocardiography.Qp and Qs blood flow were consid-ered to be propotional to the mitral and tricuspid Doppler flow velocity time integral multipled respectively by mitral or tricuspid valve ring diameters(MVID or TVID),I.e.MVID/TVID was equal to Qp/Qs.With the method,we calculated the Qp/Qs ratio close to 1:1(0.939+/-0.083)in 18 normal Per-sons,0-656+/-0.167 in 15 patients with Tetralogy of Fallot.Qp/Qs in TOF corrected negativly With hemoglobin.Our results demonstrated that conventional Doppler mdthod to calculate the Qp/Os ratio can be simplified.