Behavioural therapy (biofeedback) for solitary rectal ulcer syndrome improves symptoms and mucosal blood flow

Jarrett, M. E. D.; Emmanuel, A. V.; Vaizey, C. J.; Kamm, M. A.
March 2004
Gut;Mar2004, Vol. 53 Issue 3, p368
Academic Journal
Aims: The aim of the study was to determine if there is a permanent disorder of mucosal blood flow in patients with solitary rectal ulcer syndrome (SRUS) or a disorder related to autonomic gut innervation and physiological function that is reversible concomitant with successful treatment. Rectal mucosal blood flow was used as a validated measure of extrinsic autonomic nerve function. Methods: Sixteen consecutive patients with SRUS (12 women; mean age 35 years) and 26 healthy controls (17 women; mean age 36 years) were studied. Laser Doppler mucosal flowmetry was performed before and after biofeedback treatment. Symptoms were documented before and after biofeedback treatment using a standardised prospectively applied questionnaire. Results: Twelve of 16 patients (75%) reported subjective symptomatic improvement after treatment. Five of the 16 patients (31%) had sigmoidoscopic ulcer resolution. Pretreatment rectal mucosal blood flow was significantly lower in patients with SRUS compared with controls (163 (27) v 186 (14) flux units (FU) (mean (SD)); p<0.01). Biofeedback resulted in a significant improvement in rectal mucosal blood flow in subjects who felt subjectively better after biofeedback (p =0.001), from 165 (30) FU to 190 (40) FU. Conclusion: Gut directed biofeedback is an effective behavioural treatment for the majority of patients with SRUS. Mucosal blood flow is reduced to a similar level seen in normal transit constipation, suggesting similar impaired extrinsic autonomic cholinergic nerve activity. Successful outcome following biofeedback is associated with increased rectal mucosal blood flow, suggesting that improved extrinsic innervation to the gut may be partially responsible for the response to treatment.


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