Cardiac Autonomic Function in the First Hours of Postnatal Life: An Observational Cross-Sectional Study in Term Neonates.

Leva A Shayani, Carlos J da Cruz, Luiz Guilherme G Porto, Guilherme E Molina

Abstract readObservational Study

In one paragraph

Observational study in Pediatric cardiology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

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0cells of the map it votes in

3citing papers in PubMed

–field-weighted citation impact

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

3 citing papers in PubMed.

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

4 authors.

Leva A ShayaniExercise Physiology Laboratory, Faculty of Physical Education, University of Brasilia, Brasilia, DF, Brazil.

Carlos J da CruzExercise Physiology Laboratory, Faculty of Physical Education, University of Brasilia, Brasilia, DF, Brazil.

Luiz Guilherme G PortoExercise Physiology Laboratory, Faculty of Physical Education, University of Brasilia, Brasilia, DF, Brazil.ORCID http://orcid.org/0000-0002-6240-1614

Guilherme E MolinaExercise Physiology Laboratory, Faculty of Physical Education, University of Brasilia, Brasilia, DF, Brazil. gmolina@unb.br.ORCID http://orcid.org/0000-0002-5937-079X

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The aim of this study was to evaluate heart rate variability (HRV) within the first hours of extrauterine life in term neonates. HRV at 2-h and 14-h postpartum were compared by means of time domains (iRR, SDNN, and rMSSD); frequency domains (TP, LF, HF, and LF/HF ratio); and Poincare's Plot (SD1 and SD2) indices of HRV in 27 healthy, male, term newborns (NBs) born of elective cesarean delivery. Within 14 h after birth, the mean of the iRRs increased (Δ% = 4.4, p < 0.001) as well as parasympathetic indices (rMSSD: Δ% = 32.6; p < 0.03; HF: Δ% = 43.6; p < 0.00; SD1: Δ% = 32.6, p < 0.03). Respiratory rate (RR) decreased (RR: 2 h = 48 (43-55) cycle/min vs. 14 h = 45 (40-48) cycle/min p < 0.01). We concluded that within the first 14 h of birth, cardiac autonomic adjustments are characterized by an increase in parasympathetic activity. Concurrently, there were no significant changes observed in all other HRV indices in healthy, male, term neonates, and born of elective cesarean delivery.

Indexed as

Autonomic Nervous SystemCross-Sectional StudiesHeart RateHumansInfant, NewbornMaleRespiratory RateAutonomic nervous systemHeart rate variabilityNewbornParasympathetic activityTerm birth

Identifiers

PMID31529226

DOI10.1007/s00246-019-02207-y

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