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- W2007564910 abstract "Background Esophageal replacement by biological graft is associated with a high risk of anastomotic leak–related mediastinitis. Objective To determine whether a self-expanding plastic stent can help avoid anastomotic leak after full-thickness replacement of the esophagus in a porcine model. Design Experimental feasibility study in a porcine model. Subjects Twelve pigs were analyzed in the study. Interventions Replacement of a 2-cm-long segment of the cervical esophagus by an aortic allograft was performed in 12 pigs, with 6 pigs used as graft donors. Animals were divided into 2 groups depending on whether a self-expanding removable plastic stent protecting the 2 aortoesophageal anastomoses was inserted (n = 7) or not (n = 5), and were allowed to eat 24 hours postoperatively. Main Outcome Measurements The relative occurrence of mediastinitis caused by anastomotic leakage in stented and nonstented groups was assessed; endoscopic evaluation and histological analysis of the graft area were performed 1 month after esophageal replacement. Results All animals (n = 5) without stent insertion died of anastomotic leakage within 20 days of surgery. Two of the 7 stented animals died at day 2, and 5 survived 1 month in good clinical condition. Two stent migrations were noted. Stent extraction was followed by the development of a fibrous stricture. Conclusions The use of a self-expanding plastic stent seems to allow leak-free healing after circumferential replacement of the esophagus by a biological graft in a porcine model. Esophageal replacement by biological graft is associated with a high risk of anastomotic leak–related mediastinitis. To determine whether a self-expanding plastic stent can help avoid anastomotic leak after full-thickness replacement of the esophagus in a porcine model. Experimental feasibility study in a porcine model. Twelve pigs were analyzed in the study. Replacement of a 2-cm-long segment of the cervical esophagus by an aortic allograft was performed in 12 pigs, with 6 pigs used as graft donors. Animals were divided into 2 groups depending on whether a self-expanding removable plastic stent protecting the 2 aortoesophageal anastomoses was inserted (n = 7) or not (n = 5), and were allowed to eat 24 hours postoperatively. The relative occurrence of mediastinitis caused by anastomotic leakage in stented and nonstented groups was assessed; endoscopic evaluation and histological analysis of the graft area were performed 1 month after esophageal replacement. All animals (n = 5) without stent insertion died of anastomotic leakage within 20 days of surgery. Two of the 7 stented animals died at day 2, and 5 survived 1 month in good clinical condition. Two stent migrations were noted. Stent extraction was followed by the development of a fibrous stricture. The use of a self-expanding plastic stent seems to allow leak-free healing after circumferential replacement of the esophagus by a biological graft in a porcine model." @default.
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- W2007564910 date "2010-10-01" @default.
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- W2007564910 title "Self-expanding removable plastic stents for the protection of surgical anastomoses after esophageal replacement in a porcine model" @default.
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- W2007564910 doi "https://doi.org/10.1016/j.gie.2010.06.041" @default.
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