Evidence map›Paper›PMID 40701802›Full record

SynthesisRegional anesthesia and pain medicine2026

Addition of liposomal bupivacaine in brachial plexus blocks: a systematic review and meta-analysis of randomized controlled trials.

Chung Hin Shing, Fengfeng Wang, Pui Ming Lam, Omar Wai Kiu Tsui, Timmy Chi Wing Chan, Stanley Sau Ching Wong

Abstract readSystematic ReviewMeta-Analysis
In one paragraph

Synthesis in Regional anesthesia and pain medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed, 2 pooled it
–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

6 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. [Adjunctive agents for nerve blocks/local injections in the treatment of zoster-associated pain: A systematic review based on levels of evidence].Zhong nan da xue xue bao. Yi xue ban = Journal of Central South University. Medical sciences · 2026
    Pooled it
  2. Pooled it
  3. Trial
  4. Article
  5. Review
  6. 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.

Chung Hin Shing *Department of Anaesthesiology, The University of Hong Kong, Hong Kong, Hong Kong.ORCID http://orcid.org/0009-0004-8370-5395
Fengfeng Wang *Department of Anaesthesiology, The University of Hong Kong, Hong Kong, Hong Kong.ORCID http://orcid.org/0000-0003-4959-4527
Pui Ming LamDepartment of Anaesthesiology, The University of Hong Kong, Hong Kong, Hong Kong.ORCID http://orcid.org/0009-0006-6622-6178
Omar Wai Kiu TsuiDepartment of Orthopedics & Traumatology, The University of Hong Kong, Hong Kong, Hong Kong.
Timmy Chi Wing ChanDepartment of Anaesthesiology, Queen Mary Hospital, Hong Kong, Hong Kong.
Stanley Sau Ching WongDepartment of Anaesthesiology, The University of Hong Kong, Hong Kong, Hong Kong wongstan@hku.hk.ORCID http://orcid.org/0000-0002-8763-5687

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAdding liposomal bupivacaine to brachial plexus block may improve postoperative analgesia after upper limb surgery.

objectiveThis study aimed to assess the postoperative analgesic efficacy of adding liposomal bupivacaine to brachial plexus block compared with non-liposomal local anesthetic. EVIDENCE REVIEW: A systematic literature search was conducted in PubMed, Web of Science, EMBASE, ClinicalTrials.gov, and the Cochrane Library up to June 30, 2024. Randomized controlled trials (RCTs) that evaluated the postoperative pain scores in patients who received liposomal bupivacaine via brachial plexus block were identified. The primary outcome was resting pain scores (Numerical Rating Scale, 0-10) at 24 hours after nerve block injection derived from the random effects model. A mean difference (MD) of 1/10 was considered to represent a minimal clinically important difference in pain scores. The Grading of Recommendations Assessment, Development, and Evaluation (GRADE) framework was applied to examine the level of evidence.

findings21 RCTs (1478 participants) were included. Liposomal bupivacaine was associated with statistically significant reduction in resting pain scores at 24 hours after nerve block injection compared with non-liposomal local anesthetic (MD=-1.04, 95% CI=-1.54 to -0.53, p<0.001, 95% prediction interval=-3.05 to 0.98). This was associated with significant heterogeneity (Q=107, p<0.001, I²=81%, tau

conclusionsThere is low-level evidence that liposomal bupivacaine in brachial plexus block may reduce pain intensity after upper limb surgery, but the clinical significance may be limited.

Indexed as

Anesthetics, LocalBrachial Plexus BlockBupivacainePostoperative PainHumansLiposomesPain MeasurementRandomized Controlled Trials as TopicAnesthetics, LocalBupivacaineLiposomesAnesthesia, RegionalBrachial PlexusMeta-AnalysisNerve BlockPeripheral Nerves

Identifiers

PMID40701802
PMCPMC13311944

What OpenQuestion holds

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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.