Related Experiment Video
Updated: May 12, 2026
08:05
A Pre-clinical Rat Model for the Study of Ischemia-reperfusion Injury in Reconstructive Microsurgery
Published on: November 8, 2019
Local ischaemia does not influence anastomotic healing: an experimental study
F Daams1, K Monkhorst, J van den Broek
1Department of Surgery, Erasmus University Medical Center, Rotterdam, The Netherlands. freekdaams@gmail.com
Summary
This study explored how suture number affects colorectal anastomotic leakage (AL). Results showed no significant difference in AL rates or wound healing, suggesting suture count may not impact colonic wound integrity.
Area of Science:
- Colorectal surgery
- Surgical pathology
- Wound healing
Background:
- Colorectal anastomotic leakage (AL) is a serious complication.
- The role of local ischemia in AL pathogenesis is unclear.
- Sutures may cause local ischemia at the anastomosis site.
Purpose of the Study:
- To investigate the impact of local ischemia, induced by varying suture numbers, on colorectal anastomotic leakage.
- To evaluate the relationship between suture density and wound healing in colonic anastomoses.
Main Methods:
- An experimental model using 36 mice with colonic anastomosis.
- Three groups received running sutures with 5, 12, or >30 stitches.
- AL was assessed macroscopically and microscopically after 7 days.
Main Results:
- No significant differences in weight distribution, mortality, or AL rates were observed between groups (p=0.72, p=0.19).
- Macroscopic measurements (lumen diameter, edge distance) and histological parameters of wound healing showed no significant variations.
- AL occurred in 50% of the low-stitch group versus 17-25% in higher-stitch groups, though not statistically significant.
Conclusions:
- Varying suture numbers (5, 12, >30) did not lead to significant macroscopic or microscopic differences in colonic anastomoses.
- Local ischemia induced by sutures may not negatively influence colonic wound healing or AL rates.
- Further research is needed to fully elucidate the role of ischemia in AL pathogenesis.
