Evidence map›Paper›PMID 40445418›Full record

SynthesisHernia : the journal of hernias and abdominal wall surgery2025

Effect of preoperative botulinum toxin injection in the treatment of giant incisional hernias: a systematic review and meta-analysis.

Yasmin Mejía-Saavedra, Analý Mejía-Saavedra, José Caballero-Alvarado, Carlos Zavaleta-Corvera, Víctor Lau-Torres, Katherine Lozano-Peralta

Abstract readSystematic ReviewMeta-Analysis
PubMed Publisher
In one paragraph

Synthesis in Hernia : the journal of hernias and abdominal wall surgery, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing 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

3 citing papers in PubMed.

  1. Basal Tone, Muscle Memory and Denervation: Pathophysiological Foundations of Abdominal Wall Hernia Development and Recovery.Pathophysiology : the official journal of the International Society for Pathophysiology · 2026
    Review
  2. Article
  3. 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.

Yasmin Mejía-SaavedraFaculty of Medicine, Antenor Orrego Private University, Trujillo, 13007, Peru.
Analý Mejía-SaavedraFaculty of Medicine, Antenor Orrego Private University, Trujillo, 13007, Peru.
José Caballero-AlvaradoFaculty of Medicine, Antenor Orrego Private University, Trujillo, 13007, Peru.
Carlos Zavaleta-CorveraFaculty of Medicine, Universidad Científica del Sur, Av Panamericana Sur Km 19, Lima, 15067, Peru. czavaletac3@upao.edu.pe.ORCID 0000-0001-5918-8261
Víctor Lau-TorresFaculty of Medicine, National University of Trujillo, Trujillo, 13007, Peru.
Katherine Lozano-PeraltaFaculty of Medicine, Antenor Orrego Private University, Trujillo, 13007, Peru.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionGiant incisional hernias pose a significant surgical challenge due to their high morbidity, risk of postoperative complications, and recurrence. Preoperative botulinum toxin type A (BTX-A) injection has emerged as a novel intervention to optimize fascial closure by reducing abdominal wall muscle tension, facilitating surgical repair, and potentially decreasing postoperative complications.

objectiveTo evaluate the effect of preoperative BTX-A injection on fascial closure rates, postoperative complications, hernia recurrence, and hospital length of stay in patients undergoing repair of giant incisional hernias.

methodsA systematic review and meta-analysis were conducted according to PRISMA guidelines. Studies assessing the outcomes of BTX-A injection in the management of giant incisional hernias were included. The primary outcomes were the rate of complete fascial closure and hernia recurrence. Secondary outcomes included postoperative complications and length of hospital stay. Risk ratios (RR) and mean differences (MD) with 95% confidence intervals (CI) were calculated using a random-effects model.

resultsFive articles were selected and included in this systematic review. BTX-A injections showed a positive trend toward improved fascial closure in certain studies, although global analysis did not reveal statistically significant differences compared to controls (RR = 0.95; 95% CI: 0.90-1.01). There was no significant effect on hernia recurrence (RR = 1.02; 95% CI: 0.64-1.49). However, BTX-A significantly reduced postoperative complications (RR = 0.66; 95% CI: 0.50-0.88), with no meaningful reduction in the length of hospital stay (MD = -0.72 days; 95% CI: -1.8 to 0.36).

conclusionPreoperative BTX-A injection is a safe adjunct but has not shown significant benefits in improving fascial closure or reducing hernia recurrence. Although it reduces postoperative complications, its overall clinical impact is limited. Current evidence does not support its routine use, and further high-quality RCTs are needed.

Indexed as

Botulinum Toxins, Type AHerniorrhaphyIncisional HerniaNeuromuscular AgentsPreoperative CareHumansLength of StayPostoperative ComplicationsRecurrenceBotulinum Toxins, Type ANeuromuscular AgentsBotulinum toxins(DeCS/MeSH)HerniaHerniorrhaphyLength of stayPostoperative complicationsType AVentral

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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.