J Neurogastroenterol Motil.  2013 Jul;19(3):366-373.

Electrical Stimulation Therapy in Chronic Functional Constipation: Five Years' Experience in Patients Refractory to Biofeedback Therapy and With Rectal Hyposensitivity

• Jung KW
• Yang DH
• Yoon IJ
• Seo SY
• Koo HS
• Lee HJ
• Lee HS
• Kim JB
• Kim JW
• Park SK
• Park SH
• Kim KJ
• Ye BD
• Byeon JS
• Jung HY
• Yang SK
• Kim JH
• Myung SJ

Abstract

BACKGROUND/AIMS
Biofeedback therapy (BFT) can be unsuccessful in constipated patients, even those with pelvic floor dysfunction. Electrical stimulation therapy (EST) has been introduced as a novel therapeutic modality in patients with chronic constipation, especially those who have rectal hyposensitivity. We evaluated the efficacy of EST based on five years' clinical experience.
METHODS
From January 2002 to February 2007, 159 patients underwent EST. After exclusion of 12 drop-outs, 147 (M:F = 61:86, 49 +/- 17 years) finished all treatment sessions. Among them, 88 (M:F = 29:59, 49 +/- 17 years) were refractory to BFT without rectal hyposensitivity (RH), and 59 (M:F = 32:27, 54 +/- 17 years) were those with RH.
RESULTS
The overall response to EST was 59.2% (87/147) by per-protocol analysis. In the EST-responsive group, overall satisfaction improved significantly (from 7.3 +/- 3.0 to 4.3 +/- 2.5, P < 0.05). Subgroup analysis showed that the response rate was 64.8% (57/88) in patients refractory to BFT without RH, and 50.8% (30/59) in those with RH.
CONCLUSIONS
EST may have additional therapeutic efficacy in patients who are refractory to BFT. EST may also be effective in patients with RH, including restoration of rectal sensation. Therefore, EST could be considered as an alternative choice in patients refractory to BFT and with or without RH.

Keyword

Biofeedback; Constipation; Electric stimulation therapy

MeSH Terms

Biofeedback, Psychology
Constipation
Electric Stimulation
Electric Stimulation Therapy
Humans
Pelvic Floor
Sensation