Human electrogastrograms

Hamilton, John; Bellahsene, B. E.; Reichelderfer, Mark; Webster, John G.; Bass, Paul

doi:10.1007/bf01347907

Cited by 194 publications

(33 citation statements)

References 29 publications

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“…In a canine model, Smout et al [49] found that EGG frequency was the same as that of gastric slow waves recorded by serosal electrodes, and increases in the amplitude of the EGG were associated with the spikes observed in serosal recordings. Hamilton et al [50] reported similar findings in a human study using simultaneous surface and mucosal electrodes. Pezzolla et al [51] demonstrated that the electrical activity recorded from the abdominal surface and analyzed by FFT provides reliable information on the actual electrical activity of stomach before and after total gastrectomy.…”

Section: Validation Of Eggmentioning

confidence: 54%

Electrogastrography in Adults and Children: The Strength, Pitfalls, and Clinical Significance of the Cutaneous Recording of the Gastric Electrical Activity

Riezzo

Russo

Indrio

2013

BioMed Research International

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Cutaneous electrogastrography (EGG) is a non-invasive technique to record gastric myoelectrical activity from the abdominal surface. Although the recent rapid increase in the development of electrocardiography, EGG still suffers from several limitations. Currently, computer analysis of EGG provides few reliable parameters, such as frequency and the percentage of normal and altered slow wave activity (bradygastria and tachygastria). New EGG hardware and software, along with an appropriate arrangement of abdominal electrodes, could detect the coupling of the gastric slow wave from the EGG. At present, EGG does not diagnose a specific disease, but it puts in evidence stomach motor dysfunctions in different pathological conditions as gastroparesis and functional dyspepsia. Despite the current pitfalls of EGG, a multitasking diagnostic protocol could involve the EGG and the 13C-breath testing for the evaluation of the gastric emptying time—along with validated gastrointestinal questionnaires and biochemical evaluations of the main gastrointestinal peptides—to identify dyspeptic subgroups. The present review tries to report the state of the art about the pathophysiological background of the gastric electrical activity, the recording and processing methodology of the EGG with particular attention to multichannel recording, and the possible clinical application of the EGG in adult and children.

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Section: Validation Of Eggmentioning

confidence: 54%

Electrogastrography in Adults and Children: The Strength, Pitfalls, and Clinical Significance of the Cutaneous Recording of the Gastric Electrical Activity

Riezzo

Russo

Indrio

2013

BioMed Research International

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“…Several studies have shown that the cutaneous EGG contains frequencies similar to those recorded by internal serosal electrodes (Smout et al , 1980; Hamilton et al , 1986), but other EGG variables, including amplitude and propagation velocity, do not correlate as well (Familoni, 1994). Also, in obese volunteers slow wave propagation was not identified using EGG (Chen et al , 1989).…”

Section: Discussionmentioning

confidence: 99%

Effects of body mass index on gastric slow wave: a magnetogastrographic study

et al. 2014

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We measured gastric slow wave activity simultaneously with magnetogastrogram (MGG), mucosal electromyogram (EMG) and electrogastrogram (EGG) in human subjects with varying body mass index (BMI) before and after a meal. In order to investigate the effect of BMI on gastric slow wave parameters, each subject’s BMI was calculated and divided into two groups: subjects with BMI ≤ 27 and BMI > 27. Signals were processed with Fourier spectral analysis and Second-Order Blind Identification (SOBI) techniques. Our results showed that increased BMI does not affect signal characteristics such as frequency and amplitude of EMG and MGG. Comparison of the postprandial EGG power, on the other hand, showed a statistically significant reduction in subjects with BMI > 27 compared with BMI ≤ 27. In addition to the frequency and amplitude, the use of SOBI-computed propagation maps from MGG data allowed us to visualize the propagating slow wave and compute the propagation velocity in both BMI groups. No significant change in velocity with increasing BMI or meal was observed in our study. In conclusion, multichannel MGG provides assessment of frequency, amplitude and propagation velocity of the slow wave in subjects with differing BMI categories and were observed to be independent of BMI.

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“…EGG recordings simultaneously made with the serosal10,12,41 or mucosal16,42,43 recordings have proven that the dominant frequency of the EGG accurately represents the frequency of the gastric slow wave. Figure 7 presents such a typical example.…”

Section: Electrogastrography: Validationmentioning

confidence: 99%

Electrogastrography: Methodology, Validation and Applications

Yin

Chen

2013

J Neurogastroenterol Motil

205

243

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Electrogastrography (EGG) is a non-invasive method for the measurement of gastric myoelectrical activity. It was first discovered in 1921 and popularized in 1990s. EGG is attractive because it is non-invasive. However, due to its non-invasive nature, there have also been controversies regarding validity and applications of EGG. The aim of this review is to discuss the methodologies, validation and applications of EGG. Pros and cons of EGG will also be discussed in detail. First, the gastric slow wave and its correlation with gastric motility are presented. The association between gastric dysrhythmia and impaired gastric motility is reviewed. Secondly the method for recording the electrogastrogram is presented in detail and pitfalls in the recording and analysis of EGG are discussed. Thirdly, findings reported in the literature demonstrating the accuracy of EGG in recording gastric slow waves and gastric dysrhythmia are reviewed and discussed. The correlation of the electrogastrogram with gastric contraction is carefully discussed. Finally, applications of EGG in a few major areas are reviewed.

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Human electrogastrograms

Cited by 194 publications

References 29 publications

Electrogastrography in Adults and Children: The Strength, Pitfalls, and Clinical Significance of the Cutaneous Recording of the Gastric Electrical Activity

Electrogastrography in Adults and Children: The Strength, Pitfalls, and Clinical Significance of the Cutaneous Recording of the Gastric Electrical Activity

Effects of body mass index on gastric slow wave: a magnetogastrographic study

Electrogastrography: Methodology, Validation and Applications

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