Munyaw Yuda, Urdal Jarle, Ersdal Hege, Ngarina Matilda, Moshiro Robert, Blacy Ladislaus, Linde Jorgen E
Faculty of Health Sciences, University of Stavanger, 4036 Stavanger, Norway.
Department of Obstetrics and Gynecology, Haydom Lutheran Hospital, Haydom P.O. Box 9000, Tanzania.
Children (Basel). 2023 Apr 4;10(4):684. doi: 10.3390/children10040684.
Documentation of fetal to neonatal heart rate (HR) transition is limited. The aim of the current study was to describe HR changes from one hour before to one hour after normal vaginal deliveries. We conducted a prospective observational cohort study in Tanzania from 1 October 2020 to 30 August 2021, including normal vaginal deliveries with normal neonatal outcomes. HR was continuously recorded from one hour before to one hour after delivery, using the Moyo fetal HR meter, NeoBeat newborn HR meter, and the Liveborn Application for data storage. The median, 25th, and 75th HR percentiles were constructed. Overall, 305 deliveries were included. Median (interquartile range; IQR) gestational age was 39 (38-40) weeks and birthweight was 3200 (3000-3500) grams. HR decreased slightly during the last 60 min before delivery from 136 (123,145) to 132 (112,143) beats/minute. After delivery, HR increased within one minute to 168 (143,183) beats/min, before decreasing to around 136 (127,149) beats/min at 60 min after delivery. The drop in HR in the last hour of delivery reflects strong contractions and pushing. The rapid increase in initial neonatal HR reflects an effort to establish spontaneous breathing.
关于胎儿至新生儿心率（HR）转变的记录有限。本研究的目的是描述正常阴道分娩前1小时至产后1小时的心率变化。我们于2020年10月1日至2021年8月30日在坦桑尼亚进行了一项前瞻性观察队列研究，纳入具有正常新生儿结局的正常阴道分娩。使用莫约胎儿心率仪、NeoBeat新生儿心率仪和Liveborn应用程序进行数据存储，连续记录分娩前1小时至产后1小时的心率。构建心率的中位数、第25百分位数和第75百分位数。总共纳入了305例分娩。中位（四分位间距；IQR）胎龄为39（38 - 40）周，出生体重为3200（3000 - 3500）克。分娩前最后60分钟内心率略有下降，从136（123,145）次/分钟降至132（112,143）次/分钟。分娩后，心率在1分钟内升至168（143,183）次/分钟，然后在产后60分钟降至约136（127,149）次/分钟。分娩最后1小时内心率下降反映了强烈的宫缩和用力。新生儿初始心率的快速上升反映了建立自主呼吸的努力。
