Walther F J, Siassi B, Wu P Y
J Clin Ultrasound. 1986 Jan;14(1):37-41. doi: 10.1002/jcu.1870140108.
Noninvasive monitoring of stroke volume by pulsed Doppler echocardiography is an important recent advance in neonatal care. Using this technique, we assessed stroke volume in 112 healthy neonates (birth weight 780-5350 g, menstrual age 27-42 weeks). Stroke volume increased with advancing birth weight (r = +0.93) and gestational age (r = +0.90). Mean stroke volume per kilogram body weight (1.77 +/- 0.28 ml/kg) was constant throughout the study population. Doppler-derived stroke volumes correlated linearly with left ventricular dimensions in diastole and in systole. Stroke volumes calculated from left ventricular dimensions using the Feigenbaum and Teichholz equations correlated equally well with Doppler-derived stroke volume values (r = +0.76 and +0.77, respectively).
采用脉冲多普勒超声心动图对每搏输出量进行无创监测是新生儿护理领域最近取得的一项重要进展。运用该技术，我们评估了112例健康新生儿（出生体重780 - 5350克，孕龄27 - 42周）的每搏输出量。每搏输出量随着出生体重增加（r = +0.93）以及孕龄增加（r = +0.90）而升高。在整个研究人群中，每千克体重的平均每搏输出量（1.77±0.28毫升/千克）保持恒定。多普勒测定的每搏输出量与舒张期和收缩期左心室尺寸呈线性相关。使用费根鲍姆（Feigenbaum）方程和泰希霍尔兹（Teichholz）方程根据左心室尺寸计算得出的每搏输出量与多普勒测定的每搏输出量值相关性同样良好（分别为r = +0.76和r = +0.77）。
