Beyond forest plots: trial sequential analysis of magnesium sulfate as an adjuvant in supraclavicular brachial plexus block.

Willyam Barros Saraiva, Rafael Wanderley Persiano Malta, Roberta Ribeiro Brandão Caldas, Olavo Barbosa de Oliveira-Neto, Fabiano Timbó Barbosa, Célio Fernando de Sousa-Rodrigues

Abstract readLetter

PubMed Publisher

In one paragraph

Article in Brazilian journal of anesthesiology (Elsevier), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it

0cells of the map it votes in

0citing 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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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.

Willyam Barros SaraivaUniversidade Federal de Alagoas, Hospital Universitário Professor Alberto Antunes, Maceió, AL, Brazil; Universidade Federal de Alagoas, Maceió, AL, Brazil. Electronic address: will.bsaraiva@gmail.com.

Rafael Wanderley Persiano MaltaUniversidade Federal de Alagoas, Hospital Universitário Professor Alberto Antunes, Maceió, AL, Brazil; Universidade Federal de Alagoas, Maceió, AL, Brazil.

Roberta Ribeiro Brandão CaldasUniversidade Federal de Alagoas, Hospital Universitário Professor Alberto Antunes, Maceió, AL, Brazil; Sociedade Brasileira de Anestesiologia, Higher Degree in Anesthesiology (TSA), Rio de Janeiro, RJ, Brazil.

Olavo Barbosa de Oliveira-NetoUniversidade Federal de Alagoas, Maceió, AL, Brazil.

Fabiano Timbó BarbosaSociedade Brasileira de Anestesiologia, Higher Degree in Anesthesiology (TSA), Rio de Janeiro, RJ, Brazil; Universidade Federal de Alagoas, Maceió, AL, Brazil.

Célio Fernando de Sousa-RodriguesUniversidade Federal de Alagoas, Hospital Universitário Professor Alberto Antunes, Maceió, AL, Brazil; Universidade Federal de Alagoas, Maceió, AL, Brazil.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

PubMed holds no abstract for this paper.

Identifiers

PMID42764071

DOI10.1016/j.bjane.2026.844835

What OpenQuestion holds

Textmetadata

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.