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Updated: Jul 23, 2025

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Hernia Prevention Using Biologic Mesh and/or Small Bites: A Multispecialty 2 × 2 Factorial Randomized Controlled

Rainna Coelho1, Naila H Dhanani2, Nicole B Lyons3

  • 1From the Department of Surgery, University of Houston, Hospital Corporation of America Kingwood, Kingwood, TX (Coelho, Ali, Liang).

Journal of the American College of Surgeons
|July 17, 2023
PubMed
Summary
This summary is machine-generated.

Prophylactic biologic mesh and small bites did not reduce major complications after abdominal surgery in high-risk patients. Further research is needed before adopting these techniques for hernia prevention.

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Area of Science:

  • Abdominal surgery
  • Hernia repair
  • Surgical complications

Background:

  • Ventral incisional hernias are common after abdominal operations.
  • Previous trials showed synthetic mesh and small bites are effective.
  • Concerns exist regarding synthetic mesh in contaminated cases and small bites in obese patients.

Purpose of the Study:

  • To assess the efficacy of prophylactic biologic mesh and small bites in preventing major postoperative complications.
  • To evaluate outcomes including ventral incisional hernias, surgical site infections, reoperations, and death.

Main Methods:

  • A 2x2 factorial randomized trial involving high-risk patients (overweight/obese, smokers) undergoing abdominal operations with large midline incisions.
  • Patients were randomized to receive either sublay biologic mesh or no mesh, and small or large bites for fascial closure.
  • The primary outcome was major complications at 1 year postoperative, assessed using Fisher's exact test.

Main Results:

  • 107 patients were randomized; 49% received mesh, 51% did not; 51% had small bites, 49% had large bites.
  • At 1 year, no significant differences in major complications were observed between the mesh and no-mesh groups (21% vs. 16%, p=0.62).
  • Similarly, no differences were found between small and large bites groups (18% vs. 19%, p=1.00).

Conclusions:

  • Prophylactic biologic mesh and small bites did not demonstrate a benefit in reducing major postoperative complications in this trial.
  • Further randomized trials are necessary to confirm these findings in high-risk patient populations.
  • Widespread adoption of these prophylactic measures is not supported by current evidence.