Electrocautery effect on intestinal vascularisation in a murine model.

Area of Science:

• Surgical Innovation
• Gastrointestinal Physiology
• Vascular Biology

Background:

• Electrocautery devices can cause intestinal complications like perforation and fistulisation.
• These complications are potentially linked to impaired vascularisation of the bowel wall.
• A murine model was developed to investigate electrocautery's impact on intestinal microvascularisation.

Purpose of the Study:

• To quantify the effect of electrocautery injury on intestinal microvascularisation.
• To establish a reliable experimental model for assessing electrocautery-induced vascular damage.
• To correlate microvascular changes with the risk of intestinal perforation.

Main Methods:

• Sprague-Dawley rats underwent electrocautery injury to the small bowel at varying intensities and durations.
• Fluorescein was administered intravenously to assess tissue perfusion.
• Injured bowel segments were analyzed for microvascularisation compared to healthy tissue.

Main Results:

• Increased electrocautery intensity and duration led to significant reductions in bowel wall microvascularisation.
• A 40% perforation rate was observed when microvascularisation decreased by 25% or more.
• The jejunum exhibited a greater decrease in microvascularisation compared to the ileum.

Conclusions:

• A murine model effectively quantifies electrocautery-induced microvascularisation decrease in the bowel.
• Higher intensity and duration of electrocautery exacerbate vascular damage and perforation risk.
• The jejunum is more susceptible to electrocautery injury, necessitating caution during surgical procedures.