Function after ileal pouch and stapled pouch-anal anastomosis for ulcerative colitis

Area of Science:

• Gastroenterology
• Colorectal Surgery
• Surgical Innovation

Background:

• Ulcerative colitis (UC) management often involves surgical intervention, including ileal pouch-anal anastomosis (IPAA).
• Conventional IPAA techniques may have limitations, prompting the development of modified approaches.
• Assessing functional outcomes after different surgical methods is crucial for patient quality of life.

Purpose of the Study:

• To evaluate the functional outcomes of a modified stapled pouch-anal anastomosis technique in ulcerative colitis patients.
• To compare the functional results of stapled anastomosis with a conventional manual anastomosis.
• To investigate the impact of the stapled technique on internal anal sphincter function.

Main Methods:

• Fourteen ulcerative colitis patients underwent S-ileal pouch formation and stapled pouch-anal anastomosis, omitting purse-string sutures.
• Ileostomies were closed in eleven patients.
• Anal manometry was performed pre- and post-ileostomy closure (median 9 months).
• Functional parameters, including night evacuation, were compared between the stapled group and a historical control group with manual anastomosis.

Main Results:

• Significant impairment of internal anal sphincter function was observed after ileostomy closure in the stapled group.
• Night evacuation was significantly reduced in the stapled group compared to the conventional manual anastomosis group.
• No other significant functional differences were noted between the two groups.

Conclusions:

• A stapled pouch-anal anastomosis may offer advantages over conventional methods for ulcerative colitis patients.
• Despite potential benefits, the stapled technique can lead to internal anal sphincter damage.
• The observed sphincter damage is not attributable to mucosectomy or prolonged anal retraction, suggesting a technique-specific effect.