Radvanyi M F, Morel-Kahn F
Neuropadiatrie. 1976 Aug;7(3):302-12. doi: 10.1055/s-0028-1091631.
Heart rate was studied in 47 newborns babies during 67 polygraphic recordings by histograms and sequential curves of the length of 600 consecutive R-R-intervals selected during sleep stages lasting at least 5 minutes. In normal babies: (14 babies born at Gestational Age, G.A., 37 weeks, 6 babies born between 28 and 36 weeks). Before 37 weeks of G.A., the sequential curves show periodic variations of heart rate (including 15 to 70 beats) present both in active and quiet sleep. After 37 weeks of G.A., slow periodic variations are still present in active sleep but superimposed by fast variations synchronous to respiratory cycles. Fast variations are prevailing in quiet sleep. In pathological babies: Small variability is favoured by prematurity, young age at recording, and hypercapnia but can be very transient. Pronounced variations similar to those of normal babies are observed in 2/3 of the cases with or without respiratory assistance, with or without PEEP.
通过直方图和连续曲线，对47名新生儿在67次多导睡眠图记录期间的心率进行了研究，这些曲线是由在持续至少5分钟的睡眠阶段中选择的600个连续R-R间期的长度构成。正常婴儿（14名孕龄（GA）37周出生的婴儿，6名28至36周出生的婴儿）。在孕龄37周之前，连续曲线显示心率的周期性变化（包括15至70次心跳），在主动睡眠和安静睡眠中均存在。孕龄37周后，主动睡眠中仍存在缓慢的周期性变化，但叠加有与呼吸周期同步的快速变化。快速变化在安静睡眠中占主导。病理状态下的婴儿：早产、记录时年龄小和高碳酸血症会导致心率变异性小，但可能非常短暂。在2/3有或没有呼吸辅助、有或没有呼气末正压通气（PEEP）的病例中，观察到与正常婴儿类似的明显变化。
