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Open Access Benefits of Intraluminal Agarose Stents during End-to-End Intestinal Anastomosis in New Zealand White Rabbits

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In the present study, we evaluated the utility of an intraluminal agarose stent (IAS) for end-to-end intestinal anastomoses in rabbits. Female New Zealand white rabbits (n = 14) underwent conventional sutured anastomosis (CSA) with or without an IAS. IAS were used to maintain the luminal diameter for more rapid and accurate suturing, and then was squeezed transluminally to crush it into fragments, which passed through the intestines and were eliminated. The rabbits were euthanized on postoperative day 21. At necropsy, the anastomoses were assessed for adhesion formation, stenosis, and bursting pressure and were examined histologically for collagen content and blood vessel formation. Anastamosis surgery took less time in the IAS group (15.0 ± 2.6 min) than in the CSA-only group (30.1 ± 7.9 min). Only 1 postoperative death occurred (in the CSA group), and postmortem examination revealed evidence of anastomotic leakage. Adhesion formation and stenosis did not differ between groups, but bursting pressure, collagen content, and blood vessel formation were all significantly increased in the IAS group. IAS may decrease the operative time by maintaining a clear surgical field at the anastomotic site. In addition, the use of IAS promotes rapid healing and maintains the luminal diameter during end-to-end intestinal anastomosis.

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Document Type: Research Article

Affiliations: 1: Department of Veterinary Medicine, College of Veterinary Medicine, National Chiayi University, Chiayi City, Taiwan 2: Department of Veterinary Medicine, Animal Teaching Hospital, College of Veterinary Medicine, National Chiayi University, Chiayi City, Taiwan;, Email: [email protected]

Publication date: December 1, 2017

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  • Comparative Medicine (CM), an international journal of comparative and experimental medicine, is the leading English-language publication in the field and is ranked by the Science Citation Index in the upper third of all scientific journals. The mission of CM is to disseminate high-quality, peer-reviewed information that expands biomedical knowledge and promotes human and animal health through the study of laboratory animal disease, animal models of disease, and basic biologic mechanisms related to disease in people and animals.

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