| Noninvasive measurement and analysis of intestinal myoelectrical activity using surface electrodes. | |
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MedLine Citation:
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PMID: 15977728 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Intestinal myoelectrical activity (IMA), which determines bowel mechanical activity, is the result of two components: a low-frequency component [slow wave (SW)] that is always present, and a high-frequency component [spike bursts (SB)] which is associated with bowel contractions. Despite of the diagnostic significance of internal recordings of IMA, clinical application of this technique is limited due to its invasiveness. Thus, surface recording of IMA which is also called electroenterogram (EEnG) could be a solution for noninvasive monitoring of intestinal motility. The aim of our work was to identify slow wave and spike burst activity on surface EEnG in order to quantify bowel motor activity. For this purpose, we conducted simultaneous recordings of IMA in bowel serosa and on abdominal surface of five Beagle dogs in fast state. Surface EEnG was studied in spectral domain and frequency bands for slow wave and spike burst energy were determined. Maximum signal-to-interference ratio (7.5 dB +/- 36%) on SB frequency band was obtained when reducing upper frequency limit of signal analysis. Energy of external EEnG in reduced SB frequency band (2-7.9 Hz) presented a high correlation (0.71 +/- 7%) with internal intensity of contractions. Our results suggest that energy of SB can be quantified on external EEnG which could provide a noninvasive method for monitoring intestinal mechanical activity. |
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Authors:
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Javier Garcia-Casado; Jose L Martinez-de-Juan; Jose L Ponce |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: IEEE transactions on bio-medical engineering Volume: 52 ISSN: 0018-9294 ISO Abbreviation: IEEE Trans Biomed Eng Publication Date: 2005 Jun |
Date Detail:
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Created Date: 2005-06-27 Completed Date: 2005-07-19 Revised Date: 2009-11-11 |
Medline Journal Info:
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Nlm Unique ID: 0012737 Medline TA: IEEE Trans Biomed Eng Country: United States |
Other Details:
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Languages: eng Pagination: 983-91 Citation Subset: IM |
Affiliation:
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Departamento de Ingeniería Electrónica, Universidad Politécnica de Valencia, 46022 Valencia, Spain. jgarciac@eln.upv.es |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Action Potentials
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physiology Algorithms* Animals Diagnosis, Computer-Assisted / methods* Dogs Electromyography / methods* Gastrointestinal Motility / physiology* Intestines / physiology* Muscle Contraction / physiology* Muscle, Smooth / physiology* |
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