KẾT QUẢ ĐO ÁP LỰC HẬU MÔN TRỰC TRÀNG PHÂN GIẢI CAO VÀ CỘNG HƯỞNG TỪ ĐỘNG HỌC TRÊN BỆNH NHÂN TÁO BÓN CHỨC NĂNG MẠN TÍNH

Abstract

Introduction: Dynamic pelvic magnetic resonance imaging (DP-MRI) and high-resolution anorectal manometry (HR-ARM) are diagnostic methodologies for chronic functional constipation. The aim of this study is to determine whether high-resolution anorectal manometry (HR-ARM) correlates with findings on DP-MRI. Methods: This research is a retrospective study of HR-ARM performed on patients with constipation caused by rectocele, who also underwent DP-MRI. Studies were reviewed for the parameters of HR-ARM and significant findings of DP-MRI including posterior pelvic prolapse ≥ 6cm and rectocele ≥ 3 cm. Statistical analysis was performed using Pearson’s correlation coefficients to find out the correlation between parameters of HD-MRI with the descending of posterior pelvic floor and size of rectocele. Results: Sixty-three female patients (median age 49, range 18 – 78 years) with functional chronic constipation undergoing HR-ARM also underwent DP-MRI. The median of rectocele size was 3,2 cm (range, 0cm – 5,6cm). The median of descending of posterior pelvic floor was 4,7 cm (range, 1,2 – 8,3cm). The analysis found out the significant correlation between size of rectocele with anal pressure (r = - 0,29; p = 0,019) and rectal pressure (r= - 0,27; p = 0,034) at straining. The correlations between pelvic floor descending with anal pressure (r = -0,40; p = 0,001) and rectal pressure at straining (r = - 0,41; p = 0,001) were also significant. Conclusions: There were significantly negative correlation between the intrarectal pressure and anal pressure at straining and rectocele size. There were sigificantly negative correlations between the prolapse of pelvic floor and straining anal pressure or straining anal pressure as well.