Document Detail


Changes in heart rate in the first minutes after birth.
MedLine Citation:
PMID:  20444810     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The normal range of heart rate (HR) in the first minutes after birth has not been defined. Objective To describe the HR changes of healthy newborn infants in the delivery room (DR) detected by pulse oximetry. Study Design All inborn infants were eligible and included if a member of the research team attended the birth. Infants were excluded if they received any form of medical intervention in the DR including supplemental oxygen, or respiratory support. HR was measured using a pulse oximeter (PO) with the sensor applied to the right hand or wrist immediately after birth. PO data (oxygen saturation, HR and signal quality) were downloaded every 2 sec and analysed only when the signal had no alarm messages (low IQ signal, low perfusion, sensor off, ambient light). Results Data from 468 infants with 61 650 data points were included. Infants had a mean (range) gestational age of 38 (25-42) weeks and birth weight 2970 (625-5135) g. At 1 min the median (IQR) HR was 96 (65-127) beats per min (bpm) rising at 2 min and 5 min to 139 (110-166) bpm and 163 (146-175) bpm respectively. In preterm infants, the HR rose more slowly than term infants. Conclusions The median HR was <100 bpm at 1 min after birth. After 2 min it was uncommon to have a HR <100 bpm. In preterm infants and those born by caesarean section the HR rose more slowly than term vaginal births.
Authors:
J A Dawson; C O F Kamlin; C Wong; A B te Pas; M Vento; T J Cole; S M Donath; S B Hooper; P G Davis; C J Morley
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Archives of disease in childhood. Fetal and neonatal edition     Volume:  95     ISSN:  1468-2052     ISO Abbreviation:  Arch. Dis. Child. Fetal Neonatal Ed.     Publication Date:  2010 May 
Date Detail:
Created Date:  2010-05-06     Completed Date:  2010-07-01     Revised Date:  2014-02-19    
Medline Journal Info:
Nlm Unique ID:  9501297     Medline TA:  Arch Dis Child Fetal Neonatal Ed     Country:  England    
Other Details:
Languages:  eng     Pagination:  F177-81     Citation Subset:  AIM; IM    
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MeSH Terms
Descriptor/Qualifier:
Anesthesia, Obstetrical / methods
Birth Weight / physiology
Cesarean Section
Delivery, Obstetric / methods
Female
Gestational Age
Heart Rate / physiology*
Humans
Infant, Newborn / physiology*
Infant, Premature / physiology
Oximetry / methods
Postoperative Period
Pregnancy
Reference Values
Grant Support
ID/Acronym/Agency:
G0700961//Medical Research Council; //Medical Research Council

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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