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Related Experiment Video

Updated: Jan 22, 2026

Neutrophil Extracellular Traps Generated by Low Density Neutrophils Obtained from Peritoneal Lavage Fluid Mediate Tumor Cell Growth and Attachment
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Continuous peritoneal lavage with vacuum peritoneostomy: an experimental study.

Adilson Costa Rodrigues1, Karen Ruggeri Saad2, Paulo Fernandes Saad2

  • 1Cirurgia, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, BR.

Clinics (Sao Paulo, Brazil)
|July 11, 2019
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Summary
This summary is machine-generated.

This study introduces a novel continuous peritoneal lavage technique using vacuum laparostomy for treating diffuse peritonitis. The method proved technically feasible and stable, offering a potential new treatment option.

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Area of Science:

  • Abdominal Surgery
  • Critical Care Medicine
  • Peritoneal Dialysis

Background:

  • Diffuse peritonitis treatment remains challenging, with some cases progressing unfavorably.
  • Vacuum therapy and laparostomy are emerging treatments for peritonitis.
  • Continuous peritoneal lavage is an alternative but faces challenges in maintenance and has controversial results.

Purpose of the Study:

  • To propose and evaluate a novel model of continuous peritoneal lavage integrated with vacuum laparostomy.
  • To assess the technical feasibility and safety of this combined approach in a preclinical setting.

Main Methods:

  • A preclinical model using pigs (Landrace and Large White) under general anesthesia.
  • Laparostomy with placement of multiperforated tubes for fluid infusion.
  • Application of vacuum dressing with intermittent negative pressure.
  • Infusion of peritoneal dialysis solution (PDS) for 36 hours, with evaluation of system stability, fluid balance, and hemodynamic/biochemical parameters.
  • Analysis of fluid distribution using computed tomography (CT).

Main Results:

  • The vacuum laparostomy system demonstrated integrity without leaks or blockages, even without negative pressure.
  • Infused and aspirated fluid volumes were comparable, indicating effective fluid management.
  • No significant hemodynamic or biochemical alterations were observed.
  • CT imaging confirmed that 60 ml/kg of PDS adequately filled intra-abdominal spaces.

Conclusions:

  • Continuous peritoneal lavage combined with negative pressure via vacuum laparostomy is technically feasible.
  • This integrated approach presents a potential new therapeutic option for managing diffuse peritonitis.