Tissue-selecting-technique mega-window stapler combined with anal canal epithelial preservation operation in prolapsed hemorrhoids

Abstract

Objective: This study aimed to compare the efficiency of these two combined surgeries [prolapse and hemorrhoids (PPH) combined with the external hemorrhoidectomy and inferior internal hemorrhoid ligation; tissue selecting technique with mega-window stapler (TST-MS) combined with anal canal epithelial preservation operation]. Methods: This is a single-center, evaluator-blinded randomized controlled trial (RCT). A total of 204 participants were randomly divided into the two groups. The anal function, reoccurrence, intraoperative variables, and operative complications were assessed. The measurement data were compared by paired t test and rank sum test. Chi-squared or Fisher's exact test was used for count data and rank sum test for ranked data. To assess differences within each group in different time points, the repeated-measures analysis of variance was conducted. Results: TST-MS combined with anal canal epithelial preservation operation had lower Wexner score of anal incontinence (Z = 3.062, P = 0.002), higher patients’ satisfaction degree (t = 7.32, P 0.05). Conclusions: TST-MS combined with anal canal epithelial preservation operation showed better clinical efficiency in the treatment of prolapsed hemorrhoids. Trial registration: This study has been registered in Chinese Clinical Trial Registry (ChiCTR2000038533)

Keywords

• TST-MS
• Combined surgery
• Anal function protection
• Prolapsed hemorrhoids
• Randomized controlled trial