Surface Microdialysis for Detection of Colorectal Anastomosis Ischemia-An Experimental Study
Language English Country United States Media print-electronic
Document type Evaluation Study, Journal Article, Research Support, Non-U.S. Gov't
PubMed
33477078
DOI
10.1016/j.jss.2020.12.021
PII: S0022-4804(20)30882-9
Knihovny.cz E-resources
- Keywords
- Anastomotic leak, Anterior resection, Microdialysis,
- MeSH
- Anastomosis, Surgical adverse effects MeSH
- Glycerol metabolism MeSH
- Ischemia diagnosis etiology metabolism MeSH
- Blood Glucose analysis MeSH
- Lactic Acid metabolism MeSH
- Microdialysis methods MeSH
- Swine, Miniature MeSH
- Postoperative Complications diagnosis etiology metabolism MeSH
- Swine MeSH
- Animals MeSH
- Check Tag
- Male MeSH
- Female MeSH
- Animals MeSH
- Publication type
- Journal Article MeSH
- Evaluation Study MeSH
- Research Support, Non-U.S. Gov't MeSH
- Names of Substances
- Glycerol MeSH
- Blood Glucose MeSH
- Lactic Acid MeSH
BACKGROUND: Inadequate blood supply is one of the major risk factors for anastomotic leak after low anterior rectal resection. Early detection of ischemia might predict complicated healing and enable anastomotic salvage, which is associated with better outcomes. A microdialysis offers a real-time evaluation of adequate bowel perfusion through monitoring of tissue metabolism. In this experimental study, we assessed the role of microdialysis in detecting early ischemia after colorectal anastomosis. MATERIALS AND METHODS: Colorectal anastomosis was performed in six miniature pigs. A microdialysis catheter was placed on the bowel serosa 5 mm proximal to the anastomosis. Metabolic changes were monitored hourly before and after initiating ischemia, which was induced by ligation of the inferior mesenteric artery and skeletonization of the mesocolon. RESULTS: Significant increase in tissue levels of lactate was detected after 60 min of ischemia (13.6 [10.4-16.1] versus 6.75 [1.8-9.6] mmol/L at baseline; P < 0.005). The lactate/pyruvate ratio increased accordingly. The concentration of glycerol increased significantly after 2 hours-from a baseline value of 29.5 (3-84) to 125 (79-201) mmol/L (P < 0.005). The decrease in glucose levels was also significant after 60 minutes-0 (0-0.2) versus 4.7 (3.3-6.8) mmol/L at baseline. However, its values started to decline before ischemia. CONCLUSIONS: Surface microdialysis can detect ischemic changes early and may be a promising method in postoperative monitoring of colorectal anastomosis.
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