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Peritoneal Dialysis II: Peritoneal Dialysis Systems and Complications01:25

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Peritoneal dialysis (PD) is a medical process that removes waste products and excess fluid from the body using the peritoneal membrane as a natural filter.Peritoneal Dialysis MethodsSeveral methods can be used for peritoneal dialysis, including Acute Intermittent Peritoneal Dialysis, Continuous Ambulatory Peritoneal Dialysis, and Automated Peritoneal Dialysis, also known as Continuous Cyclic Peritoneal Dialysis.Acute Intermittent Peritoneal Dialysis (AIPD) is used for patients with uremic...
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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)
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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.