| Effects of magnetic sacral root stimulation on anorectal pressure and volume. | |
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MedLine Citation:
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PMID: 11742169 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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PURPOSE: Electrical sacral root stimulation induces defecation in spinal cord injury patients and is currently under examination as a new therapy for fecal incontinence. In contrast to electrical stimulation, magnetic stimulation is noninvasive. To gain more insight into the mechanism of action of sacral root stimulation, we studied the effects of magnetic sacral root stimulation on anorectal pressure and volume in both fecal incontinence and spinal cord injury patients. METHODS: Three groups were examined: 14 healthy volunteers, 18 fecal incontinence patients, and 14 spinal cord injury patients. Repetitive magnetic sacral root stimulation was performed bilaterally using bursts of five seconds at 5 Hz. Anal and rectal pressure changes and rectal volume changes were measured. RESULTS: An increase in anal pressure was seen in 100 percent of the control subjects, in 86 percent of the spinal cord injury patients, and in 73 percent of the fecal incontinence patients (P = 0.03). The overall median pressure rise after right-sided and left-sided stimulation was 12 (interquartile range, 8-18.5) and 13 (interquartile range, 6-18) mmHg at the mid anal level. A decrease in rectal volume was provoked in 72 percent of the control subjects, in 79 percent of the spinal cord injury patients, and in 50 percent of the fecal incontinence patients. Overall median volume changes after right-sided and left-sided stimulation were 10 (range, 5-22) and 9 (range, 5-21) percent from baseline volume. An increase in rectal pressure could be measured in 56 percent of the control subjects, 77 percent of the fecal incontinence patients, and 43 percent of the spinal cord injury patients. Median pressure rises after right-sided and left-sided stimulation were 5 (range, 3-12) and 5 (range, 3-5) mmHg. CONCLUSIONS: Magnetic sacral root stimulation produces an increase in anal and rectal pressure and a decrease in rectal volume in healthy subjects and patients with fecal incontinence or a spinal cord injury. |
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Authors:
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G L Morren; S Walter; O Hallböök; R Sjödahl |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Diseases of the colon and rectum Volume: 44 ISSN: 0012-3706 ISO Abbreviation: Dis. Colon Rectum Publication Date: 2001 Dec |
Date Detail:
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Created Date: 2001-12-19 Completed Date: 2002-01-30 Revised Date: 2005-11-17 |
Medline Journal Info:
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Nlm Unique ID: 0372764 Medline TA: Dis Colon Rectum Country: United States |
Other Details:
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Languages: eng Pagination: 1827-33 Citation Subset: IM |
Affiliation:
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Department of Colorectal Surgery, University Hospital, Linköping, Sweden. |
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Anal Canal / innervation* Chi-Square Distribution Fecal Incontinence / physiopathology, rehabilitation* Female Humans Lumbosacral Plexus / physiopathology* Magnetics* Male Manometry / instrumentation Middle Aged Pressure Rectum / innervation* Spinal Cord Injuries / physiopathology, rehabilitation* Spinal Nerve Roots / physiopathology* Statistics, Nonparametric Treatment Outcome |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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