Spác J, Nĕmcová H, Blaha M, Dvorák I, Cerný J
II. vnitrní klinika lékarské fakulty Masarykovy University, Brno.
Vnitr Lek. 1993 Apr;39(4):353-8.
The aim of the submitted study was to evaluate the blood flow in the pulmonary veins by transoesophageal Doppler echocardiography which is the ideal method for recording the blood flow in the pulmonary veins as the ultrasound probe is closely behind the left atrium. In 35 patients with ischaemic heart disease the authors evaluated the blood flow in the pulmonary veins to assess whether the rate of the blood flow in these vessels can serve a non-invasive estimate of the end-diastolic pressure in the left ventricle (LVEDP). It was revealed that venous blood flow has in the majority of cases two anterior peaks during ventricular systole, one anterior peak during diastole and one negative peak during atrial contraction. In patients with normal LVEDP the peak rate and integral time-velocity of the flow curve is greater during systole, while in patients with a higher LVEDP these parameters are higher during diastole. Dopplerian assessment of the flow in the pulmonary veins is safe, relatively non-invasive and simple. This method makes possible rapid visual estimates of the end-diastolic pressure in the left ventricle.
本研究的目的是通过经食管多普勒超声心动图评估肺静脉血流，由于超声探头紧邻左心房，这是记录肺静脉血流的理想方法。作者对35例缺血性心脏病患者的肺静脉血流进行了评估，以确定这些血管中的血流速率是否可用于无创估计左心室舒张末期压力（LVEDP）。结果显示，在大多数情况下，静脉血流在心室收缩期有两个前向波峰，舒张期有一个前向波峰，心房收缩期有一个负向波峰。LVEDP正常的患者，收缩期血流曲线的峰值速率和积分时间-速度更大，而LVEDP较高的患者，这些参数在舒张期更高。对肺静脉血流进行多普勒评估安全、相对无创且简单。该方法能够快速直观地估计左心室舒张末期压力。
