M型彩超测量左室血流传播速度在评价新生儿左心舒张功能中的价值

Value of left ventricular flow propagation velocity by color M-mode Doppler sonography for left ventricular diastolic function of newborns

目的：利用M型彩色多普勒（CDM）测量早期新生儿（生后一周内）左心室血流传播速度（Vp），探讨其在评价新生儿左心舒张功能中的价值。方法：早期正常新生儿104例和窒息伴缺氧性心肌损害新生儿56例，均应用CDM检测Vp值，将它们进行比较分析。结果：（1）本组早期正常新生儿的Vp值正常参考范围为27～47cm／s；（2）窒息伴缺氧性心肌损害新生儿的Vp值较正常新生儿减低，差别有统计学意义（P〈0．05）；（3）当传统评价左心舒张功能指标无法测量时，Vp值仍可准确测量。结论：CDM测定Vp可较准确评价早期新生儿左心舒张功能。

Aim： To investigate the value of left ventricular flow propagation velocity （Vp） by color Mmode Doppler （CDM） for left ventrieular diastolic function of early newborns （ a week after birth）. Methods： Healthy early neonates （n = 104） and asphyxial neonates with myocardial damage （n = 56 ） were measured Vp by CDM. Results： （ 1 ） The normal range of left ventrieular diastolic function index （Vp） was 27 -47 cm/s. （2）Vp of the hypoxial neonates with myocardial damage were significantly lower than that of normal neonates. （3） When conventional Doppler indices were unavailable, Vp could be accurately available. Conclusion： Vp measured by color M-mode Doppler sonography can accurately evaluate left ventricular diastolic function of early neonates.