Simón Miguel A, Bueno Ana M
Department of Psychology, Research Group in Clinical and Health Psychology, University of A Coruña, A Coruña, Spain.
Appl Psychophysiol Biofeedback. 2009 Dec;34(4):273-7. doi: 10.1007/s10484-009-9100-7. Epub 2009 Jul 18.
A randomized controlled trial was carried out with the purpose to determine the effectiveness of EMG-biofeedback in the treatment of chronically constipated elderly patients with dyssynergic defecation as compared to a control condition characterized by information about the bowel functioning and counseling focused on the behavioural mechanisms involved in the defecation. With this purpose, after an initial assessment period (4 weeks), 30 chronically constipated elderly patients with dyssynergic defecation (11 males, 19 females) were randomly assigned to either EMG-biofeedback group (n = 15) or control group (n = 15). The results shown significant improvements in psychophysiological measures (EMG-activity during straining to defecate and anismus index), as well as in clinical variables (frequency of defecations per week, sensation of incomplete evacuation, difficulty evacuation level and perianal pain at defecation) only in the EMG-biofeedback group. The clinical benefits of this behavioural treatment were maintained at the follow-up period 2 months later.
进行了一项随机对照试验，目的是确定肌电图生物反馈疗法与以肠道功能信息及针对排便相关行为机制的咨询为特征的对照条件相比，在治疗患有排便协同失调的慢性便秘老年患者中的有效性。为此，在初始评估期（4周）后，30名患有排便协同失调的慢性便秘老年患者（11名男性，19名女性）被随机分配到肌电图生物反馈组（n = 15）或对照组（n = 15）。结果显示，仅在肌电图生物反馈组中，心理生理指标（排便用力时的肌电图活动和肛门痉挛指数）以及临床变量（每周排便频率、排便不尽感、排便困难程度和排便时肛周疼痛）有显著改善。这种行为治疗的临床益处在2个月后的随访期得以维持。
