Evidence map›Paper›PMID 26149280›Full record

ArticlePhysiological reports2015

Adaptive shut-down of EEG activity predicts critical acidemia in the near-term ovine fetus.

Martin G Frasch, Lucien Daniel Durosier, Nathan Gold, Mingju Cao, Brad Matushewski, Lynn Keenliside, Yoram Louzoun, Michael G Ross, Bryan S Richardson

Registry-linked trialOpen access · goldAbstract read
In one paragraph

Article in Physiological reports, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03013569 (Can Spontaneous Fetal EEG Be Recorded During Labor Using the Established Fetal Scalp Electrode Heart Rate Monitoring System?), which is not on this map. Cited by 9 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 1 pooled it
4.6field-weighted citation impact, top 6% 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.

NCT03013569 completednot on this mapstarted 2017, after this paper: background citation

Can Spontaneous Fetal EEG Be Recorded During Labor Using the Established Fetal Scalp Electrode Heart Rate Monitoring System?

TypeobservationalSponsorUniversity of WashingtonRan2017 to 2023Enrolled11ConditionsPregnancy Abnormal
3 · Its place in the literature

Who cites it

9 citing papers in PubMed, 1 synthesis or guideline pooled it, 23 citations in OpenAlex.

  1. Pooled it
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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

9 authors at 6 institutions in 3 countries.

Martin G FraschDepartment of Obstetrics and Gynaecology, Department of Neurosciences, CHU Ste-Justine Research Center Université de Montréal, Montreal, Quebec, Canada mg.frasch@umontreal.ca.ORCID http://orcid.org/0000-0003-3159-6321
Lucien Daniel DurosierDepartment of Obstetrics and Gynaecology, Department of Neurosciences, CHU Ste-Justine Research Center Université de Montréal, Montreal, Quebec, Canada.
Nathan GoldDepartment of Mathematics and Statistics, York University, Toronto, Ontario, Canada.
Mingju CaoDepartment of Obstetrics and Gynaecology, Department of Neurosciences, CHU Ste-Justine Research Center Université de Montréal, Montreal, Quebec, Canada.
Brad MatushewskiDepartment of Obstetrics and Gynecology, University Western Ontario, London, Ontario, Canada.
Lynn KeenlisideImaging Program Lawson Health Research Institute, London, Ontario, Canada.
Yoram LouzounDepartment of Mathematics, Bar-Ilan University, Ramat-Gan, Israel.
Michael G RossDepartment of Obstetrics & Gynecology, LA BioMed at Harbor-UCLA Medical Center, Torrance, California.
Bryan S RichardsonDepartment of Obstetrics and Gynecology, University Western Ontario, London, Ontario, Canada.
Centre Hospitalier Universitaire Sainte-Justine · CAWestern University · CABar-Ilan University · ILLawson Health Research Institute · CAThe Lundquist Institute · USYork University · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In fetal sheep, the electrocorticogram (ECOG) recorded directly from the cortex during repetitive heart rate (FHR) decelerations induced by umbilical cord occlusions (UCO) predictably correlates with worsening hypoxic-acidemia. In human fetal monitoring during labor, the equivalent electroencephalogram (EEG) can be recorded noninvasively from the scalp. We tested the hypothesis that combined fetal EEG - FHR monitoring allows for early detection of worsening hypoxic-acidemia similar to that shown for ECOG-FHR monitoring. Near-term fetal sheep (n = 9) were chronically instrumented with arterial and venous catheters, ECG, ECOG, and EEG electrodes and umbilical cord occluder, followed by 4 days of recovery. Repetitive UCOs of 1 min duration and increasing strength (with regard to the degree of reduction in umbilical blood flow) were induced each 2.5 min until pH dropped to <7.00. Repetitive UCOs led to marked acidosis (arterial pH 7.35 ± 0.01 to 7.00 ± 0.03). At pH of 7.22 ± 0.03 (range 7.32-7.07), and 45 ± 9 min (range 1 h 33 min-20 min) prior to attaining pH < 7.00, both ECOG and EEG amplitudes began to decrease ~fourfold during each FHR deceleration in a synchronized manner. Confirming our hypothesis, these findings support fetal EEG as a useful adjunct to FHR monitoring during human labor for early detection of incipient fetal acidemia.

Indexed as

AcidosisasphyxiaECOGEEGFetusFHRhypoxiamonitoring

Identifiers

PMID26149280
PMCPMC4552521
OpenAlexW2121780336

What OpenQuestion holds

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Registered trials

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.