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Adjunctive antibiotic lavage in experimental peritonitis.

K P Lally, J C Trettin, M J Torma

Surgery, Gynecology & Obstetrics

|May 1, 1983

Summary

Antibiotic therapy, including clindamycin and gentamicin, improved survival rates in rats with fecal peritonitis. However, antibiotic lavage provided no additional benefit when effective parenteral therapy was already administered.

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Area of Science:

Veterinary Surgery
Surgical Infections
Pharmacology

Background:

Fecal peritonitis is a severe condition often leading to high mortality.
Antibiotic therapy is crucial for managing intra-abdominal infections.
The role of adjunctive antibiotic lavage alongside parenteral therapy requires further investigation.

Purpose of the Study:

To evaluate the efficacy of parenteral antibiotics and antibiotic lavage in treating lethal fecal peritonitis in a rat model.
To determine if antibiotic lavage offers additional survival or abscess reduction benefits when combined with effective parenteral antibiotic treatment.

Main Methods:

Lethal fecal peritonitis was induced in 253 rats.
Rats were randomized to receive parenteral clindamycin and gentamicin or saline.
All rats underwent saline lavage, followed by further division for lavage with saline, gentamicin, clindamycin, or cefoxitin.
Survival rates and abscess formation were assessed after nine days.

Main Results:

Parenteral clindamycin and gentamicin significantly improved survival rates compared to controls.
Gentamicin or cefoxitin lavage also resulted in significantly better survival rates.
No significant difference in abscess formation was observed across antibiotic treatment groups.
Antibiotic lavage did not provide additional benefits in rats receiving effective parenteral therapy.

Conclusions:

Parenteral antibiotics (clindamycin, gentamicin) are effective in improving survival in fecal peritonitis.
Antibiotic lavage does not offer added advantages when effective parenteral antibiotic therapy is already in place.
This study suggests focusing on optimal parenteral antibiotic selection and administration for peritonitis management.

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