A serial study of intracranial perfusion and ascending aortic flow in newborns 新生儿颅内灌注与升主动脉血流(AF)的动态研究
There were high correlations between RE-measured pulse pressure arising time and DE-derived aortic flow acceleration time, and between RE-measured and DE-derived left ventricular ejection time; 脉图脉压上升时间和左室射血时间分别与多普勒测量的主动脉血流(AF)加速时间和左室射血时间相关;
Following this assumption with customized computer software the aortic flow profile was digitized and converted to 4V 2 curve whose maximum value of the first derivative is termed as max ( dk / dt ). 应用特制计算机软件将主动脉血流(AF)速度曲线转化为4V2曲线,该曲线的一级导数峰值即为Max(dk/dt)。
Left atrial 、 left ventricular pressure curves and aortic blood flow curves were measured beret and after mitral valve replacement. 测定置换前、后的左心房和左心室压力曲线,以及主动脉流量曲线。
Aortic pressure, left ventricular pressure, left ventricular function, aortic blood flow, systemic resistance and biochemistry were maintained stable during the 24 hour period. 保存期间,主动脉压、左心室压、左心室功能、主动脉血流(AF)量、血管阻力、生化测定等均保持稳定。