Evidence map›Paper›PMID 33172876›Full record

Observational studyArchives of disease in childhood. Fetal and neonatal edition2021

Changes in heart rate from 5 s to 5 min after birth in vaginally delivered term newborns with delayed cord clamping.

Peder Aleksander Bjorland, Hege Langli Ersdal, Joar Eilevstjønn, Knut Øymar, Peter G Davis, Siren Irene Rettedal

Open access · hybridAbstract readObservational Study
In one paragraph

Observational study in Archives of disease in childhood. Fetal and neonatal edition, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
2.5field-weighted citation impact, top 8% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

23 citing papers in PubMed, 28 citations in OpenAlex.

  1. Trial
  2. Decreasing time to achieve reliable EKG signal in fetal care delivery room resuscitations.Journal of perinatology : official journal of the California Perinatal Association · 2026
    Article
  3. Article
  4. Observational
  5. Article
  6. Immediate heart rate changes in late preterm infants receiving resuscitation in the delivery room.Journal of perinatology : official journal of the California Perinatal Association · 2025
    Observational
  7. Article
  8. Article
  9. Review
  10. Review
  11. Review
  12. Article
  13. Review
  14. Increased risk of bradycardia in vigorous infants receiving early as compared to delayed cord clamping at birth.Journal of perinatology : official journal of the California Perinatal Association · 2023
    Observational
  15. Article
  16. Observational
  17. Article
  18. Article
  19. Article
  20. Respiratory support after delayed cord clamping: a prospective cohort study of at-risk births at ≥35Archives of disease in childhood. Fetal and neonatal edition · 2021
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 3 institutions in 2 countries.

Peder Aleksander BjorlandDepartment of Paediatrics, Stavanger University Hospital, Stavanger, Norway peder.aleksander.bjorland@sus.no.ORCID http://orcid.org/0000-0001-6965-8263
Hege Langli ErsdalCritical Care and Anaesthesiology Research Group, Stavanger University Hospital, Stavanger, Norway.
Joar EilevstjønnDepartment of Strategic Research, Laerdal Medical AS, Stavanger, Norway.
Knut ØymarDepartment of Paediatrics, Stavanger University Hospital, Stavanger, Norway.
Peter G DavisDepartment of Newborn Research, The Royal Women's Hospital at Sandringham, Sandringham, Victoria, Australia.ORCID http://orcid.org/0000-0001-6742-7314
Siren Irene RettedalDepartment of Paediatrics, Stavanger University Hospital, Stavanger, Norway.
Stavanger University Hospital · NOLaerdal (Norway) · NORoyal Women's Hospital · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo determine heart rate centiles during the first 5 min after birth in healthy term newborns delivered vaginally with delayed cord clamping.

designSingle-centre prospective observational study.

settingStavanger University Hospital, Norway, March-August 2019. PATIENTS: Term newborns delivered vaginally were eligible for inclusion. Newborns delivered by vacuum or forceps or who received any medical intervention were excluded.

interventionsA novel dry electrode electrocardiography monitor (NeoBeat) was applied to the newborn's chest immediately after birth. The newborns were placed on their mother's chest or abdomen, dried and stimulated, and cord clamping was delayed for at least 1 min.

main outcome measuresHeart rate was recorded at 1 s intervals, and the 3rd, 10th, 25th, 50th, 75th, 90th and 97th centiles were calculated from 5 s to 5 min after birth.

results898 newborns with a mean (SD) birth weight 3594 (478) g and gestational age 40 (1) weeks were included. The heart rate increased rapidly from median (IQR) 122 (98-146) to 168 (146-185) beats per minute (bpm) during the first 30 s after birth, peaking at 175 (157-189) bpm at 61 s after birth, and thereafter slowly decreasing. The third centile reached 100 bpm at 34 s, suggesting that heart rates <100 bpm during the first minutes after birth are uncommon in healthy newborns after delayed cord clamping.

conclusionThis report presents normal heart rate centiles from 5 s to 5 min after birth in healthy term newborns delivered vaginally with delayed cord clamping.

Indexed as

Delivery, ObstetricElectrocardiographyUmbilical CordBirth WeightConstrictionFemaleGestational AgeHeart RateHumansInfant, NewbornMaleNorwayOutcome and Process Assessment, Health CareParturitionReference ValuesTime-to-Treatmentcardiologyneonatology

Identifiers

PMID33172876
PMCPMC8070647
OpenAlexW3098175665

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.