Evidence map›Paper›PMID 40610285›Full record

ArticleBritish journal of anaesthesia2025

Association of peripheral nerve blocks with increased postoperative pain and opioid use in orthopaedic surgery: a single-centre retrospective cohort study.

Ashley R Chung, Rory Vu Mather, Rodrigo Gutierrez, Ran Liu, Chee Fai A Leung, Mae Zhang, Laura A Santa Cruz Mercado, Timothy T Houle, Edward A Bittner, Patrick L Purdon

2 registry-linked trialsAbstract read
In one paragraph

Article in British journal of anaesthesia, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 2 registered trials, which are not on this map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing 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.

NCT07666009 nanot yet recruitingnot on this mapstarted 2026, after this paper: background citation

Prevention of Rebound Pain After Orthopaedic Surgery With Peripheral Nerve Block: a Single-blinded Randomised Controlled Trial

TypeinterventionalSponsorCentre Hospitalier Universitaire VaudoisRan2026 to 2027Enrolled100ConditionsPost Operative Analgesia, Rebound Pain, Post Operative Pain, AcuteArmsMorphine provided via oral PCA, Morphine provided via oral PCA + morphine administered at a scheduled regimen
NCT07666971 nanot yet recruitingnot on this mapstarted 2026, after this paper: background citation

Prevention of Rebound Pain After Orthopaedic Surgery With Peripheral Nerve Block: a Single-blinded Randomised Controlled Trial

TypeinterventionalSponsorCentre Hospitalier Universitaire VaudoisRan2026 to 2027Enrolled100ConditionsPost Operative Analgesia, Rebound Pain, Post Operative Pain, AcuteArmsMorphine provided via oral PCA, Morphine provided via oral PCA + morphine administered at a scheduled regimen
3 · Its place in the literature

Who cites it

8 citing papers in PubMed.

  1. Trial
  2. Article
  3. Article
  4. Liposomal bupivacaine: is it the "code" to reduce postoperative opioid consumption?International journal of surgery (London, England) · 2026
    Article
  5. Article
  6. Review
  7. Article
  8. Review
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

10 authors.

Ashley R ChungStanford University School of Medicine, Department of Anesthesiology, Perioperative and Pain Medicine, Palo Alto, CA, USA.
Rory Vu MatherStanford University School of Medicine, Department of Anesthesiology, Perioperative and Pain Medicine, Palo Alto, CA, USA; Harvard/MIT MD-PhD Program, Boston, MA, USA; Harvard/MIT Program in Health, Sciences, and Technology, Cambridge, MA, USA; Department of Anesthesia, Critical Care, and Pain Medicine, Massachusetts General Hospital, Boston, MA, USA. Electronic address: rorymather@hms.harvard.edu.
Rodrigo GutierrezStanford University School of Medicine, Department of Anesthesiology, Perioperative and Pain Medicine, Palo Alto, CA, USA; Department of Anesthesia and Perioperative Medicine, University of Chile, Santiago, Chile.
Ran LiuStanford University School of Medicine, Department of Anesthesiology, Perioperative and Pain Medicine, Palo Alto, CA, USA.
Chee Fai A LeungStanford University School of Medicine, Department of Anesthesiology, Perioperative and Pain Medicine, Palo Alto, CA, USA.
Mae ZhangStanford University School of Medicine, Department of Anesthesiology, Perioperative and Pain Medicine, Palo Alto, CA, USA.
Laura A Santa Cruz MercadoDepartment of Anesthesia, Critical Care and Pain Medicine, Beth Israel Deaconess Medical Center, Boston, MA, USA.
Timothy T HouleDepartment of Anesthesia, Critical Care, and Pain Medicine, Massachusetts General Hospital, Boston, MA, USA.
Edward A BittnerDepartment of Anesthesia, Critical Care, and Pain Medicine, Massachusetts General Hospital, Boston, MA, USA.
Patrick L PurdonStanford University School of Medicine, Department of Anesthesiology, Perioperative and Pain Medicine, Palo Alto, CA, USA.

Funding

Medical Scientist Training ProgramT32GM007753 · NIGMS · HARVARD UNIVERSITY (MEDICAL SCHOOL) · PI WALENSKY, LOREN DAVID · 1985 to 2021
$50.0M
Medical Scientist Training ProgramT32GM144273 · NIGMS · HARVARD MEDICAL SCHOOL · PI David Shumway Jones, Jacqueline A. Lees · 2022 to 2026
$14.7M
Neuroimaging Training ProgramT32EB001680 · NIBIB · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI BRUCE R ROSEN · 2003 to 2026
$3.8M
Developing novel technologies to monitor nociception and opioid administration during surgery and general anesthesia to minimize postoperative opioid requirementsR42DA053075 · NIDA · PASCALL SYSTEMS, INCORPORATED · PI LE MAU, TUAN, PURDON, PATRICK L. · 2020 to 2024
$3.5M
A pilot study to characterize brain dynamic biomarkers of fentanyl for opioid overdose monitoringR21DA048323 · NIDA · MASSACHUSETTS GENERAL HOSPITAL · PI PURDON, PATRICK L. · 2019 to 2020
$462k
Model-based optimization of pain management in surgical patientsF32GM148114 · NIGMS · STANFORD UNIVERSITY · PI LIU, RAN · 2022 to 2024
$210k
NIBIB NIH HHS T32 EB001680NIDA NIH HHS R21 DA048323NIDA NIH HHS R42 DA053075NIGMS NIH HHS F32 GM148114NIGMS NIH HHS T32 GM007753NIGMS NIH HHS T32 GM144273
6 · The paper itself

Abstract

backgroundPeripheral nerve blocks have become popular in orthopaedic surgeries to improve acute postoperative pain. However, studies are mixed on their effectiveness in decreasing postoperative opioid consumption. A more comprehensive analysis is necessary to understand if peripheral nerve blocks reduce postoperative opioid exposure and risk for opioid dependence.

methodsThis retrospective cohort study evaluated electronic health record data for adults undergoing orthopaedic surgery with general anaesthesia from 2016 to 2020 at the Massachusetts General Hospital. Linear models were fitted on propensity-weighted data to characterise the association between single injection peripheral nerve blocks and clinical outcomes. Our primary outcomes were maximum pain score and cumulative opioid dose, quantified in morphine milligram equivalents, administered in the PACU. Post-discharge outcomes associated with pain and opioid consumption were also evaluated.

resultsAmong 22 956 patients, peripheral nerve block administration was associated with lower maximum pain scores and lower probability of opioid administration in the PACU. However, it was associated with higher maximum pain scores and a 22.7% increase in opioid consumption during the hospital stay. Peripheral nerve blocks were associated with an increase in opioid prescriptions at 30 days after discharge, but no increase at 90 or 180 days, and with decreased chronic pain diagnoses 1 yr after operation.

conclusionsAlthough single injection peripheral nerve blocks were effective in reducing immediate postoperative pain and opioid consumption, they were associated with greater opioid consumption that could increase the risk for opioid dependence. Standardised protocols to mitigate the risk for rebound pain could help minimise postoperative opioid exposure.

Indexed as

Analgesics, OpioidNerve BlockOrthopedic ProceduresPostoperative PainAdultAgedCohort StudiesFemaleHumansMaleMiddle AgedPain MeasurementRetrospective StudiesAnalgesics, Opioidchronic postsurgical painopioid dependenceperipheral nerve blockrebound painregional anaesthesia

Identifiers

PMID40610285
PMCPMC12291095

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

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.