GLP-1 Evidence

Not medical advice. A record of published research and our assessments of it. The limits

Do Preoperative Glucagon-Like Peptide-1 Receptor Agonists Influence Lumbar Fusion Outcomes? A Systematic Review and Meta-Analysis

Design
Meta-analysis · 28525 participants · Unknown outcome
Match to healthy normal-weight adults aged 55–75
Different population[Auto] Synthesis of studies conducted predominantly in people with obesity/overweight.
Could weight loss explain it?
Unknown[Auto] Harm signal; weight-loss mediation not the relevant question, but consider whether harms relate to rapid weight loss or reduced intake.
Study tier
Study tier 2[Auto] Systematic review/meta-analysis of randomized trials (auto-provisional; heterogeneity and included-study quality not assessed).
Assessment
Version 1 · automatic, not yet reviewed by a person · Sep 20, 2026

Study facts come from the paper. Population match, weight-loss explanation and study tier are our judgments, made against the reference group of healthy normal-weight adults aged 55–75.

[Auto, unreviewed; quoted from abstract conclusions] Across the evaluated outcomes, the available observational evidence did not identify a signal of increased postoperative risk associated with preoperative GLP-1RA exposure after lumbar fusion. Prospective studies with standardized exposure definitions and perioperative management protocols are warranted to confirm these findings and better define their clinical implications.

01Findings

What the study reported

Drugs
Class unspecified
Primary outcome
Not extracted
Effect
Not extracted
95% confidence interval
Not extracted
Follow-up
Not stated
Adverse events
Not extracted
Limitations
Auto-classified from abstract only; effect estimates, adverse events and limitations not extracted. Requires manual review.

Who was studied

Obesity status
obesity/overweight present (all or most)
Diabetes status
diabetes mentioned
Sample size
28525

Study quality details

Study design
Meta-analysis
Sample size
28525
Randomization
n/a
Blinding
not stated
Comparator
not stated
Follow up duration
not stated
Outcome type
unknown
Replication
not assessed (auto)
Consistency with other evidence
not assessed (auto)
Population applicability
INDIRECT
Statistical precision
CI reported: 95% confidence intervals
Risk of bias
not assessed (auto)
Funding conflicts
unclear
Peer review status
yes
02Funding

Funding and conflicts

Funding
not reported in abstract
Industry funded
Unclear
Manufacturer
None identified
Sponsor role
not reported in abstract
Author conflicts
Declaration of Conflicting Interests : The authors report no conflicts of interest in this work.
Independent replication
unknown

Funding is shown on every study and never used to score it.

04Source

The source, as retrieved

Abstract

[BACKGROUND] Glucagon-like peptide-1 receptor agonists (GLP-1RAs) are increasingly used in patients with obesity and type 2 diabetes, but lumbar fusion-specific associations with postoperative outcomes remain uncertain. [OBJECTIVE] To evaluate the association between preoperative GLP-1RA exposure and surgical and postoperative outcomes in adults undergoing lumbar fusion. [METHODS] PubMed, Embase, and the Cochrane Library were searched from inception through 14 May 2026. Comparative studies of adults undergoing lumbar fusion with and without preoperative GLP-1RA exposure were included. Two reviewers independently screened studies, extracted data, and assessed risk of bias using the Risk of Bias in Non-randomized Studies of Interventions (ROBINS-I). Random-effects meta-analyses generated odds ratios with 95% confidence intervals. The protocol was prospectively registered in PROSPERO (CRD420261414637). [RESULTS] Seven retrospective cohorts involving 28,525 patients were included; 6 used propensity score matching or another matching strategy. No statistically significant associations were observed between preoperative GLP-1RA exposure and reoperation or revision (OR: 0.74, 95% CI: 0.44-1.24; P = 0.25), postoperative infection (OR: 0.83, 95% CI: 0.68-1.00; P = 0.05), wound complications (OR: 0.86, 95% CI: 0.65-1.12; P = 0.26), or postoperative respiratory complications (OR: 1.08, 95% CI: 0.63-1.84; P = 0.69). Deep vein thrombosis, pulmonary embolism, and unplanned emergency department visits also did not differ significantly. All included studies were observational and predominantly used large administrative data sources. [CONCLUSIONS] Across the evaluated outcomes, the available observational evidence did not identify a signal of increased postoperative risk associated with preoperative GLP-1RA exposure after lumbar fusion. Prospective studies with standardized exposure definitions and perioperative management protocols are warranted to confirm these findings and better define their clinical implications. [CLINICAL RELEVANCE] Current observational evidence does not establish preoperative GLP-1RA exposure alone as an independent risk factor for adverse outcomes after lumbar fusion.

Where this record came from

SourceRetrievedIdentifier
pubmedSep 20, 202642754392
first ingestion