摘要
运用多普勒超声(DE)技术测定37例室间隔缺损(VSD)患者的分流速度、肺动脉血流峰值流速(PAVp)及肺动脉血流加速度时间(AT),以估测他们的肺血管阻力。结果显示,DE检测的最大分流速度(ShVp)与心导管测定的肺总阻力(TPR)呈高度相关性(r=-0.83,P<0.001);以ShVp≤3.80m/s预测TPR≥280dyn·s·cm^(-5)有很高的特异性和准确性;PAVp、AT和平均分流速度也均与TPR有明显的相关(r分别为-0.64、-0.65、-0.68,P<0.001)。作者认为,DE检测ShVD、PAVp等有助于无创性估测VSD的肺阻力大小,并可检出TPR明显增高者,其中ShVp是一个有较高价值的可靠指标。
Shunt velocities, pulmonary artery peak flow velocity (PAVP), and acceleration time (AT) were measured by Doppler echocardiography (DE) in 37 cases of ventricular septal defect (VSD). The best correlation was found between peak shunt velocity (ShVp) and the total pulmonary resistance (TPR) determined through cardiac catheterization (r=-0.83,P<0.001). Using shvp of 3.80m/s or Iess resulted in good specificity and accuracy for detecting elevated TPR≥280dyn. s. cm^(-5). PAVp、AT and mean shunt velocity were also correlated to TPR (r=-0.64,-0.65,-0.68 respectively, P<0.001). The authors consider that, SHVp PAVp With DE is a valuable noninvasive technique for estimating pulmonary resistance in VSD cases,and can be helpful in separating those with markedly elevated TPR from others.
出处
《宁夏医学杂志》
CAS
1991年第5期260-262,共3页
Ningxia Medical Journal
