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The influence of NSAIDs on experimental intestinal anastomoses
W J Mastboom1, T Hendriks, P van Elteren
1Department of General Surgery, St. Radboud University Hospital, Nijegen, The Netherlands.
Abstract:
Limiting degradation of collagen during the initial phase of wound healing is expected to improve postoperative intestinal strength and thereby decrease chances for anastomotic dehiscence. We studied the influence of four nonsteroid anti-inflammatory drugs on the healing of intestinal anastomoses in rats, with special regard to changes of collagen levels around the anastomoses. Four experimental groups of 20 rats each received daily oral doses of piroxicam, ibuprofen, aspirin, or indomethacin and were compared with a control group. Animals were sacrificed 3 or 7 days after operation. Both morbidity and mortality rate in the experimental groups were high. Collagen, measured as hydroxyproline, levels in anastomotic and adjoining 1-cm intestinal segments were compared with concentrations in control segments resected during operation. After an initial decrease on day 3, hydroxyproline concentrations increased on day 7. In the colon the lowering of hydroxyproline concentrations, which was more pronounced than in the ileum, was significantly reduced by administration of piroxicam and ibuprofen, both in the anastomosis and its proximal segment. On day 7, the increase of hydroxyproline concentrations in the ileum was inhibited by administration of anti-inflammatory drugs. It is concluded that nonsteroidal anti-inflammatory drugs may limit postoperative degradation of collagen in colonic anastomoses, but at the same time may increase the rat's susceptibility to surgical infections.
Insights
Nonsteroidal anti-inflammatory drugs may reduce collagen degradation in colonic anastomoses, potentially improving wound healing. However, these drugs also increased infection risk in rats, highlighting a critical trade-off.
Area of Science:
- Wound Healing
- Gastrointestinal Surgery
- Pharmacology
Background:
- Collagen degradation during early wound healing impacts intestinal strength and anastomotic dehiscence.
- Nonsteroidal anti-inflammatory drugs (NSAIDs) are commonly used but their effect on intestinal anastomosis healing is not fully understood.
- Understanding NSAID effects on collagen metabolism is crucial for optimizing surgical outcomes.
Purpose of the Study:
- To investigate the influence of four NSAIDs (piroxicam, ibuprofen, aspirin, indomethacin) on intestinal anastomosis healing in rats.
- To assess the impact of these NSAIDs on collagen levels (hydroxyproline) around the anastomosis.
- To evaluate the effects on morbidity, mortality, and infection rates.
Main Methods:
- Rats were divided into five groups: four NSAID treatment groups and one control group.
- Daily oral doses of piroxicam, ibuprofen, aspirin, or indomethacin were administered.
- Animals were sacrificed at 3 and 7 days post-operation for analysis of hydroxyproline levels in anastomotic and adjacent intestinal segments.
Main Results:
- NSAID administration led to high morbidity and mortality rates.
- Hydroxyproline levels initially decreased at day 3, then increased at day 7 post-operation.
- Piroxicam and ibuprofen significantly reduced hydroxyproline decrease in the colon, but NSAIDs inhibited hydroxyproline increase in the ileum on day 7.
Conclusions:
- NSAIDs may limit collagen degradation in colonic anastomoses, potentially aiding healing.
- However, NSAIDs appear to increase susceptibility to surgical infections in rats.
- Careful consideration of NSAID use is warranted in patients with intestinal anastomoses due to potential risks.