Gastrointestinal Myoelectric Measurements via Simultaneous External and Internal Electrodes in Pigs

Salimi-Jazi, Fereshteh; Thomas, Anne-Laure; Rafeeqi, Talha; Diyaolu, Modupeola; Wood, L. D. H.; Axelrod, Steve; Navalgund, Anand; Axelrod, Lindsay; Dunn, James C.Y.

doi:10.1016/j.jss.2022.05.012

Cited by 5 publications

(2 citation statements)

References 13 publications

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“…Measured subjects are selected in compliance with specific research; however, to perform statistical comparison, the control group of healthy ( 26 , 94 ) and pathological group ( 25 , 27 , 95 ) of subjects is needed. Many authors were interested in measurement of electrical activity of the stomach in animals, especially in dogs ( 96 – 99 ), pigs ( 81 , 84 , 91 , 100 – 104 ), and rabbits ( 105 , 106 ). Measurement with human subjects was usually aimed to pathological cases of adults ( 107 – 109 ) or children ( 66 , 75 , 110 , 111 ).…”

Section: Measurement Methodologymentioning

confidence: 99%

Electrogastrography measurement systems and analysis methods used in clinical practice and research: comprehensive review

Oczka,

Augustynek,

Penhaker

et al. 2024

Front. Med.

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Electrogastrography (EGG) is a non-invasive method with high diagnostic potential for the prevention of gastroenterological pathologies in clinical practice. In this study, a review of the measurement systems, procedures, and methods of analysis used in electrogastrography is presented. A critical review of historical and current literature is conducted, focusing on electrode placement, measurement apparatus, measurement procedures, and time-frequency domain methods of filtration and analysis of the non-invasively measured electrical activity of the stomach. As a result, 129 relevant articles with primary aim on experimental diet were reviewed in this study. Scopus, PubMed, and Web of Science databases were used to search for articles in English language, according to the specific query and using the PRISMA method. The research topic of electrogastrography has been continuously growing in popularity since the first measurement by professor Alvarez 100 years ago, and there are many researchers and companies interested in EGG nowadays. Measurement apparatus and procedures are still being developed in both commercial and research settings. There are plenty variable electrode layouts, ranging from minimal numbers of electrodes for ambulatory measurements to very high numbers of electrodes for spatial measurements. Most authors used in their research anatomically approximated layout with two++ active electrodes in bipolar connection and commercial electrogastrograph with sampling rate of 2 or 4 Hz. Test subjects were usually healthy adults and diet was controlled. However, evaluation methods are being developed at a slower pace, and usually the signals are classified only based on dominant frequency. The main review contributions include the overview of spectrum of measurement systems and procedures for electrogastrography developed by many authors, but a firm medical standard has not yet been defined. Therefore, it is not possible to use this method in clinical practice for objective diagnosis.Systematic Review Registrationhttps://www.prisma-statement.org/.

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Section: Measurement Methodologymentioning

confidence: 99%

Electrogastrography measurement systems and analysis methods used in clinical practice and research: comprehensive review

Oczka,

Augustynek,

Penhaker

et al. 2024

Front. Med.

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show abstract

“…For the stomach, non-invasive body surface gastric mapping (BSGM) has been validated against invasive high resolution (HR) serosal mapping 24 , 26 , 28 . For the colon, animal and human studies using internal and/or external electrical sensors have detected rhythmic colonic electrical activities of congruent frequency; however there have been no studies directly correlating outputs from non-invasive methods to manometry 29 , 30 . Evaluating colonic activity can also be complex relative to the stomach, due to larger anatomical variations, intermittent activity profiles, a more diverse frequency range, and potential for multiple synchronous active regions with independent CMP characteristics 31 .…”

Section: Introductionmentioning

confidence: 99%

Validation of body surface colonic mapping (BSCM) against high resolution colonic manometry for evaluation of colonic motility

Seo,

Wells,

Dickson

et al. 2024

Sci Rep

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Abnormal cyclic motor pattern (CMP) activity is implicated in colonic dysfunction, but the only tool to evaluate CMP activity, high-resolution colonic manometry (HRCM), remains expensive and not widely accessible. This study aimed to validate body surface colonic mapping (BSCM) through direct correlation with HRCM. Synchronous meal-test recordings were performed in asymptomatic participants with intact colons. A signal processing method for BSCM was developed to detect CMPs. Quantitative temporal analysis was performed comparing the meal responses and motility indices (MI). Spatial heat maps were also compared. Post-study questionnaires evaluated participants’ preference and comfort/distress experienced from either test. 11 participants were recruited and 7 had successful synchronous recordings (5 females/2 males; median age: 50 years [range 38–63]). The best-correlating MI temporal analyses achieved a high degree of agreement (median Pearson correlation coefficient (Rp) value: 0.69; range 0.47–0.77). HRCM and BSCM meal response start and end times (Rp = 0.998 and 0.83; both p < 0.05) and durations (Rp = 0.85; p = 0.03) were similar. Heat maps demonstrated good spatial agreement. BSCM is the first non-invasive method to be validated by demonstrating a direct spatio-temporal correlation to manometry in evaluating colonic motility.

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Electroanatomical mapping of the stomach with simultaneous biomagnetic measurements

Drake,

Cheng,

Muszynski

et al. 2023

Computers in Biology and Medicine

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Gastrointestinal Myoelectric Measurements via Simultaneous External and Internal Electrodes in Pigs

Cited by 5 publications

References 13 publications

Electrogastrography measurement systems and analysis methods used in clinical practice and research: comprehensive review

Electrogastrography measurement systems and analysis methods used in clinical practice and research: comprehensive review

Validation of body surface colonic mapping (BSCM) against high resolution colonic manometry for evaluation of colonic motility

Electroanatomical mapping of the stomach with simultaneous biomagnetic measurements

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