Enhancement of Non-Invasive Recording of Electroenterogram by Means of a Flexible Array of Concentric Ring Electrodes

Monitoring intestinal myoelectrical activity by electroenterogram (EEnG) would be of great clinical interest for diagnosing gastrointestinal pathologies and disorders. However, surface EEnG recordings are of very low amplitude and can be severely affected by baseline drifts and respiratory and elect...

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Bibliographic Details
Published in:Annals of biomedical engineering 2014-03, Vol.42 (3), p.651-660
Main Authors: Garcia-Casado, J., Zena-Gimenez, V., Prats-Boluda, G., Ye-Lin, Y.
Format: Article
Language:English
Subjects:
Adult
Biochemistry
Biological and Medical Physics
Biomedical and Life Sciences
Biomedical Engineering and Bioengineering
Biomedicine
Biophysics
Classical Mechanics
Electrocardiography
Electrodes
Electromyography - instrumentation
Electromyography - methods
Female
Gastrointestinal Motility
Humans
Intestinal Diseases - diagnosis
Intestinal Diseases - pathology
Intestinal Diseases - physiopathology
Intestines - blood supply
Intestines - pathology
Intestines - physiopathology
Ischemia - diagnosis
Ischemia - pathology
Ischemia - physiopathology
Male
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Summary:Monitoring intestinal myoelectrical activity by electroenterogram (EEnG) would be of great clinical interest for diagnosing gastrointestinal pathologies and disorders. However, surface EEnG recordings are of very low amplitude and can be severely affected by baseline drifts and respiratory and electrocardiographic (ECG) interference. In this work, a flexible array of concentric ring electrodes was developed and tested to determine whether it can provide surface EEnG signals of better quality than bipolar recordings from conventional disc electrodes. With this aim, sixteen healthy subjects in a fasting state (>8 h) underwent recording. The capability of detecting intestinal pacemaker activity (slow wave) and the influence of physiological interferences were studied. The signals obtained from the concentric ring electrodes proved to be more robust to ECG and respiratory interference than those from conventional disc electrodes. The results also show that intestinal EEnG components such as the slow wave can be more easily identified by the proposed system based on a flexible array of concentric ring electrodes. The developed active electrode array could be a very valuable tool for non-invasive diagnosis of disease states such as ischemia and motility disorders of the small bowel which are known to alter the normal enteric slow wave activity.
ISSN:0090-6964
1573-9686
DOI:10.1007/s10439-013-0935-y