Evidence map›Paper›PMID 39720351›Full record

Trial reportDrug design, development and therapy2024

Effect of Position-Based Dosing Strategy for Metaraminol on Neonatal Acid-Base Status During Elective Caesarean Delivery: A Noninferiority Randomised Controlled Trial.

Tianyu Liu, Hua Jiang, Chao Xu, Lei Li, Hong Zhang, Yi Feng

Abstract readRandomized Controlled TrialEquivalence Trial
In one paragraph

Trial report in Drug design, development and therapy, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

1 citing paper in PubMed.

  1. 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.

Tianyu Liu *Department of Anaesthesiology, Peking University People's Hospital, Peking, People's Republic of China.
Hua Jiang *Department of Anaesthesiology, Peking University People's Hospital, Peking, People's Republic of China.
Chao Xu *Department of Anaesthesiology, Peking University People's Hospital, Peking, People's Republic of China.
Lei LiSuzhou Wujiang District Center for Disease Control and Prevention, Suzhou, Jiangsu, People's Republic of China.ORCID 0000-0002-5100-2124
Hong ZhangDepartment of Anaesthesiology, Peking University People's Hospital, Peking, People's Republic of China.ORCID 0000-0002-4392-7370
Yi FengDepartment of Anaesthesiology, Peking University People's Hospital, Peking, People's Republic of China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: The 15° left tilt position during caesarean delivery has been recommended by guidelines for many years, but recent studies have questioned the clinical benefit of left tilt position. We hypothesize that using a higher starting dose of metaraminol in the supine position will result in a non-inferior umbilical arterial pH, compared to the 15° left tilt position. Methods: Healthy women undergoing elective caesarean delivery were randomized to the supine position (n = 62) or 15° left tilt position (n = 62) after spinal anaesthesia (0.5% bupivacaine 9 mg). Different starting doses of metaraminol infusion were initiated at 2.7 μg kg Results: Compared with tilt group, pH (supine group: 7.325 (7.29, 7.35) vs tilt group: 7.33 (7.3, 7.35), P = 0.76) and base excess (tilt group: -0.98 (2.59) mM vs supine group: -0.92 (2.77) mM, P = 0.9) of the umbilical artery are non-inferior. There was no difference in SBP (P = 0.16) or incidence of hypotension (P = 0.75) between the two groups. The incidence of reactive hypertension was greater in the supine position group (P < 0.001). Conclusion: If maternal blood pressure is maintained using the higher starting dose of metaraminol, the left tilted position may not be necessary among healthy patients (BMI less than 35 kg/m

Indexed as

Cesarean SectionMetaraminolAcid-Base EquilibriumAdultAnesthesia, SpinalDose-Response Relationship, DrugElective Surgical ProceduresFemaleHumansHydrogen-Ion ConcentrationInfant, NewbornPregnancyMetaraminolCaesarean deliverymetaraminolnoninferiority trialsupine positiontilt position

Identifiers

PMID39720351
PMCPMC11668338

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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.