Comparative study on the therapeutic effects artificial rectal sphincter and magnetic rectal sphincter on anal incontinence

HAN Qingzeng

doi:10.3969/j.issn.1002-7386.2018.12.011

Abstract：Objective To observe and compare the therapeutic effects artificial rectal sphincter ( ABS) and magnetic rectal sphincter ( MAS) on anal incontinence. Methods A total of 60 female patients with anal incontinence were divided into MAS group ( n =27 ) and ABS group ( n =33 ) , who were treated by MAS or ABS, respectively. The surgery status, postoperative complications and device removal rate were statistically analyzed,moreover,the therapeutic effects in both groups were evaluated accoding to the anus incontinence scores ( wexner) and the questionnaire of quality of life of patients with fecal incontinence ( FIQL) , and the physiological results of anus after operation were observed and compared between the two groups. Results The operation time and hospital stay in MAS group were significantly shorter than those in ABS group ( P<0. 05). The 3 patients (11. 11%) in MAS group removed out the equipment and 4 patients (12. 12%) in ABS group removed out the equipment. After operation the wexner average scores in both groups were superior to those before treatment (P<0. 05),moreover,which in ABS group at 6 months after device implantation were superior to those in MAS group (P<0. 05). After treatment the scores of FIQL in both groups were significantly increased,as compared with those before treatment (P<0. 05). In MAS group,after treatment the anal resting pressure was significantly increased, as compared with that before treatment (P<0. 05), which increased from 33(7~54. 5)cm H2O to 44. 5(21~68. 5)cm H2O, and the maximum extrusion pressure was increased from 48. 5(0~78. 5)cm H2O to 63(7~99)cm H2O,there were significant differences (P<0. 05). In ABS group, after treatment the anal resting pressure was significantly increased, as compared with that before treatment (P<0. 05), which increased from 34(16~66)cm H2O to 64. 5(36~95. 5)cm H2O, and the maximum extrusion pressure was increased from 46(0~73)cm H2O to 88(44~136)cm H2O,there were significant differences (P<0. 05). Conclusion MAS is a promising, new-style surgical method with the advantages of less invasion and simple operation, which can achieve similar therapeutic effects to those of ABS, which is a further supplement therapeutic schedule of anal incontinence.