Peritoneal Lavage With Low GDP Neutral pH PD Solution Reduces Mortality and Severity in a Lethal Peritonitis Model

Area of Science:

• Peritoneal dialysis
• Infectious disease modeling
• Surgical critical care

Background:

• Severe peritonitis poses a significant clinical challenge.
• The efficacy of peritoneal lavage monotherapy with PD solution for severe peritonitis is not well-established.

Purpose of the Study:

• To evaluate the efficacy of peritoneal lavage monotherapy using a low GDP neutral PD solution in a rat model of Methicillin-sensitive Staphylococcus aureus (MSSA) lethal peritonitis.
• To assess the impact of lavage frequency on bacterial clearance and clinical outcomes.

Main Methods:

• A lethal peritonitis model was induced in rats using MSSA.
• Rats underwent either 3-times or 6-times peritoneal lavage with PD solution, or no lavage.
• Bacterial counts in effluent were measured to assess clearance.
• Mortality, FDP, creatinine, and signs of infection (fur change, adhesion, pus) were evaluated.

Main Results:

• Both 3-times and 6-times lavage significantly reduced 24-hour mortality and markers of peritonitis (effluent FDP and creatinine) compared to no lavage.
• 6-times lavage significantly prevented complications like rough fur, intra-abdominal adhesion, and pus formation.
• Effluent bacterial counts decreased significantly with increased lavage frequency, indicating effective bacterial elimination.

Conclusions:

• Peritoneal lavage monotherapy with PD solution is effective in reducing mortality and disease severity in a lethal peritonitis model.
• This approach rapidly eliminates bacteria without the need for antibiotics.
• The findings support the potential of PD solution lavage as a standalone therapy for severe peritonitis.