Distribution of fluid within the peritoneal cavity: a cadaveric study

Area of Science:

• Anatomy
• Surgical Research
• Medical Imaging

Background:

• Peritoneal cavity fluid distribution is crucial for therapeutic interventions.
• Predicting optimal fluid volumes for treatments like adhesiolysis prevention is challenging.
• Cadaver studies offer insights into anatomical variations affecting fluid spread.

Purpose of the Study:

• To assess how varying fluid volumes distribute within the peritoneal cavity of cadavers.
• To determine the volumes required to reach all spaces within the greater sac.
• To inform the necessary volumes of therapeutic solutions for effective treatment.

Main Methods:

• Twenty-one cadavers (9 male, 12 female) were used.
• Fluid distribution was visualized after introducing 500 ml and then an additional 500 ml of water.
• Key anatomical spaces including pelvic, paracolic, subhepatic, and subphrenic areas were examined.

Main Results:

• 500 ml distributed to all areas in 47.8% of cadavers; 1,000 ml reached all areas in 81.0%.
• Small cadavers (< or =60 kg) achieved maximum distribution with 500 ml.
• Medium (60-100 kg) and large (> or =100 kg) cadavers required 1,000 ml for maximum distribution (70% and 75% respectively).

Conclusions:

• 1,000 ml of fluid is generally required to ensure distribution to all relevant peritoneal spaces.
• Anatomical variations, such as the phrenicocolic ligament, can limit fluid spread.
• Intra-abdominal pathology and prior surgery significantly impact fluid distribution patterns.