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.
Highlights
Received 05.07.19; accepted 11.12.19 The OBJECTIVE was to compare the efficacy and rate of complications in patients of groups with uncovered and covered colorectal stents
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
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)
Summary
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 use of double covered and double uncovered stents is effectively and safely for patients with malignant colorectal obstruction. Симптомы кишечной непроходимости отмечаются у 8–29 % пациентов со злокачественными новообразованиями толстой кишки [1,2,3]. По особенностям конструкции стенты принято подразделять на непокрытые и покрытые [11]. Для уменьшения частоты данных осложнений были разработаны «двухслойные» покрытые и непокрытые стенты. Целью проспективного рандомизированного сравнительного исследования было сравнить эффективность и уровень осложнений при использовании у пациентов с обтурационной толстокишечной непроходимостью непокрытых и покрытых стентов. Непокрытый стент имеет двухслойную структуру, что обеспечивает сохранение радиальной силы и гибкости, создаваемой пересечением двух стентов с формированием ячеек малого диаметра, что теоретически должно предотвращать миграцию и уменьшать прорастание стента
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