Samper Villagrasa M P, Ventura Faci M P, Fabre González E, Bescos Pisón J L, Pérez González J
Departamento de Pediatría, Facultad de Medicina, Universidad de Zaragoza.
An Esp Pediatr. 1989 Sep;31(3):196-200.
We have registered, on 36 normal newborns at term, ECG recordings of sixty seconds at a speed of 100 mm/second, from birth tooth sixth month of postnatal life. The heart rate variability was measured on its double slope, short and long term by the numerical method that Yeh proposed, consistent with the "differential index" (DI) and the "interval index" (II). For the short term variability, we have obtained minimum values at birth and maximum values at 72 hours of postnatal life, with a tendency to drop up to the end of the first month and later to become stable until the end of six months of age. The changes found among different ages, could be related to modifications in basal heart rate under autonomic nervous system control. The variability values of the long term, do not show a clear age relation.
我们对36名足月正常新生儿进行了记录，从出生到出生后第六个月，以100毫米/秒的速度记录了60秒的心电图。采用Yeh提出的数值方法，根据“差异指数”（DI）和“间期指数”（II），在双斜率上测量心率变异性，分为短期和长期。对于短期变异性，我们在出生时获得最小值，在出生后72小时获得最大值，在第一个月末有下降趋势，之后直到六个月龄结束时趋于稳定。不同年龄之间发现的变化，可能与自主神经系统控制下的基础心率变化有关。长期变异性值没有显示出明显的年龄关系。
