论文部分内容阅读
依靠无创方法估测肺动脉压力(PAP)在临床上具有非常重要的意义。近年来应用脉冲多普勒技术直观反映肺动脉血流情况,从而评价肺动脉压力,取得了较大的进展。下面分几方面综述如下。 一、肺动脉血流形态与肺动脉压力 肺动脉血流的形态可以定性判断肺动脉压力。日本学者指出,肺动脉压力正常组、肺动脉血流频谱呈园顶型,逐渐加速和减速,峰速在收缩中期。肺动脉高压组有二种形态:(1)狭三角型:加速减速均快,峰速到达时间较正常明显提早,射血常终止于
Pulmonary arterial pressure (PAP) estimation by noninvasive method is very clinically important. In recent years, the application of pulsed Doppler technology to reflect the pulmonary artery blood flow to assess the pulmonary artery pressure, and made great progress. The following is a summary of the following aspects. First, pulmonary arterial blood flow and pulmonary arterial pressure pulmonary arterial blood flow can be qualitatively determine the pulmonary artery pressure. Japanese scholars pointed out that the normal group of pulmonary artery pressure, pulmonary artery flow spectrum showed a dome-shaped, gradually accelerated and decelerated, peak speed in the mid-term contraction. Pulmonary hypertension group has two kinds of morphology: (1) narrow triangle type: acceleration and deceleration are fast, peak arrival time was significantly earlier than normal, ejection often terminates in