COMPARATIVE EVALUATION OF THE USE OF COATED AND UNCOATED SELF-EXPANDABLE METALLIC STENTS IN MALIGNANT COLORECTAL OBSTRUCTION

Abstract

THE OBJECTIVE was to compare the efficacy and rate of complications in patients of groups with uncovered and covered colorectal stents.METHODS AND MATERIALS. The study included 102 patients who were admitted for emergency with symptoms of malignant colon obstruction, who were randomly installed covered and uncovered SEMS from December 2012 to September 2017.RESULTS. Clinical success was achieved with uncovered stents in 98 % of cases and 96 % with covered stents (relative risk (RR) 1.02). 95 % confidence interval (CI) 0.954–1.092). The incidence of complications in the group of uncovered stents was 9.8 %, in the group of covered stents – 3.9 % (RR 0.938, CI 0.841–1.046); the frequency of recurrences of obstruction did not significantly different between groups. The median duration of cumulative stent patency was 181 days in the group of uncovered stents and 218 days in the group of covered stents (p=0.427), the difference was statistically insignificant.CONCLUSION. The use of double covered and double uncovered stents is equally effectively and safely for patients with malignant colorectal obstruction. The frequency of reobstructions did not exceed 4 % and did not differ in the groups of covered and uncovered stents. The choice of the type of stent should be determined individually depending on the clinical situation.