2017
DOI: 10.3393/ac.2017.33.5.161
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Electrophysiological Basis of Fecal Incontinence and Its Implications for Treatment

Abstract: The majority of patients with neuropathic incontinence and other pelvic floor conditions associated with straining at stool have damage to the pudendal nerves distal to the ischial spine. Sacral nerve stimulation appears to be a promising innovation and has been widely adopted and currently considered the standard of care for adults with moderate to severe fecal incontinence and following failed sphincter repair. From a decision-to-treat perspective, the short-term efficacy is good (70%-80%), but the long-term… Show more

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Cited by 14 publications
(13 citation statements)
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“…The internal anal sphincter and the rectum are controlled by the parasympathetic and sympathetic sacral nerves, while the external anal sphincter muscle is controlled by the vulva nerve [ 21 ]. The sympathetic system stimulates muscular contraction (i.e., closure of the rectum), while the parasympathetic system relaxes the muscles, allowing for defecation [ 22 ]. The sphincter mechanism reacts differently, depending on the consistency of the stool, as during defecation and anal stretching, the sensory receptors are irritated.…”
Section: Introductionmentioning
confidence: 99%
“…The internal anal sphincter and the rectum are controlled by the parasympathetic and sympathetic sacral nerves, while the external anal sphincter muscle is controlled by the vulva nerve [ 21 ]. The sympathetic system stimulates muscular contraction (i.e., closure of the rectum), while the parasympathetic system relaxes the muscles, allowing for defecation [ 22 ]. The sphincter mechanism reacts differently, depending on the consistency of the stool, as during defecation and anal stretching, the sensory receptors are irritated.…”
Section: Introductionmentioning
confidence: 99%
“…A degree of detrusor instability is found in many normal people if subjected to careful urodynamic studies. Weak sphincters as a result of surgical or nerve injury (Schofield, , Weledji, ) and the descending urethra in stress incontinence would also manifest as loss of control (Blandy, ). A history of coexisting anorectal (fecal) incontinence suggests neuropathic (pudendal nerve) injury to the external urethral and external anal sphincters and levator ani, which can therefore be suitable for sacral nerve (S2‐4) stimulation (SNS) (Weledji, ; McGee et al, ) (Figs.…”
Section: Discussionmentioning
confidence: 99%
“…Percutaneous tibial nerve stimulation (PTNS) is a less invasive, less direct and less expensive method for neuromodulation, which has also proved effective in several randomized and non‐randomized trials, including improvement rates comparable to anti‐cholinergics in OAB management. However, PTNS remains effective only for a short period after the stimulation is delivered (Weledji, ; Abello and Das, ). This technique has a much lower rate of adverse events than SNS, but with the inconvenience of weekly visits for stimulation, although implantable devices are on the horizon (Gupta et al, ).…”
Section: Discussionmentioning
confidence: 99%
“…SNM was approved for use in the management of FI by the FDA in 2011 ( Figure 3). SNM works by electrical stimulation of the sacral nerve roots, producing anal sphincter augmentation and modulation of spinal/supraspinal pathways 29 . Wexner et al .…”
Section: Introductionmentioning
confidence: 99%