Evidence map›Paper›PMID 34335812›Full record

ReviewEvidence-based complementary and alternative medicine : eCAM2021

Efficacy and Safety of Butorphanol Use in Patient-Controlled Analgesia: A Meta-Analysis.

Zhihua Zhu, Wenyu Zhang

Erratum issuedAbstract readReview
In one paragraph

Review in Evidence-based complementary and alternative medicine : eCAM, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing 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

13 citing papers in PubMed.

  1. Butorphanol Tartrate Nasal Spray for Post-Cesarean Analgesia and Prolactin Secretion.Medical science monitor : international medical journal of experimental and clinical research · 2025
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  9. EDFrontiers in medicine · 2024
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

2 authors.

Zhihua ZhuDepartment of Anesthesiology, China-Japan Union Hospital of Jilin University, Changchun, Jilin, China.ORCID https://orcid.org/0000-0002-7668-5080
Wenyu ZhangDepartment of Anesthesiology, China-Japan Union Hospital of Jilin University, Changchun, Jilin, China.ORCID https://orcid.org/0000-0003-1071-1992

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveThis meta-analysis evaluates the efficacy and safety regarding usage of butorphanol in patient-controlled analgesia (PCA).

methodsSeveral databases such as PubMed, Cochrane Library, Embase, CNKI, and VIP were explored with the help of computer search and manual retrieval. Randomized controlled trial (RCT) was selected, and the meta-analysis was conducted using RevMan 5.1. The primary efficacy endpoint was the postoperative visual analog scale score, postoperative Ramsay sedation scale (RSS), and adverse events.

resultsNine RCTs met the inclusion criteria and were included in this meta-analysis. No significant differences were found between the butorphanol group and nonbutorphanol group at 12 h and 48 h. The postoperative RSS score at 12 h, 24 h, and 48 h was representative of the calming effect of butorphanol. No significant difference was found on the endpoint of the postoperative RSS score at 12 h, 48 h, and 24 h. The RSS score was lower in the butorphanol group in comparison to the nonbutorphanol group. The butorphanol group was also associated with lower rate of nausea, vomiting, itching, and dizziness compared to the nonbutorphanol group.

conclusionButorphanol may be used in PCA as a successful postoperative analgesia and is also associated with lower side effects. Further research is needed to verify the efficacy and safety of butorphanol.

Identifiers

PMID34335812
PMCPMC8324365

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Registered trials

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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.