Clinical electrogastrography and its relationship to gastric surgery

Nelsen, Thomas S.; Kohatsu, Shoichi

doi:10.1016/0002-9610(68)90496-0

Cited by 93 publications

(25 citation statements)

References 7 publications

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“…The frequencies recorded by the EGG are identical with frequencies of electrical activity recorded in or directly on the stomach and frequencies of stomach contractions when they occur (Muth, 1998). The EGG has been used to evaluate the function of the stomach in dysautonomia patients (Gianaros et al, 2001 (Nelsen et al, 1968); it is normally three cycles per minute (cpm), but a faster (tachygastria) or lower wave (bradygastria) than the normal frequency has also been found in cases of diabetes, dysautonomia, and gravida with nausea (Koch et al, 1990;Walsh et al, 1996).…”

Section: Introductionmentioning

confidence: 89%

The Influence of Taste Stimuli and Illumination on Electrogastrogram Measurements

Jin

Katsuura

Iwanaga

et al. 2007

J Physiol Anthropol

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An electrogastrogram (EGG) is considered to be an index to the autonomic nervous system of the digestive organs. In the present study, we attempted to clarify whether or not an EGG can be used to evaluate the influence of illumination, and what kinds of effect taste stimuli and illumination have on the autonomic nervous system. In this study, we used the ratio of the normal wave component of the EGG (EGG-NR: 2-4.5 cpm power/1-10 cpm power) and the amplitude of a normal wave (EGG-NI: integrated EGG of 2-4.5 cpm). Thirteen healthy males participated in 16 experimental conditions (4 lighting conditionsϫ4 taste stimuli). The four lighting conditions were set by combinations of illuminance levels of 200 and 1500 lx and color temperatures of 3000 and 7500 K. The four taste stimuli were sweet (glucose), salty (salt), sour (acetic acid), and bitter (quinine). The changes in EGG-NR and EGG-NI were compared for different taste conditions. The results showed that EGG-NI was not significantly affected by the different taste conditions. However, the main effect of taste on EGG-NR was significant: sweet and salty tastes were significantly higher than the bitter taste. EGG-NR and EGG-NI in different lighting conditions were also compared. The main effect of different color temperatures was also significant, but the illuminance level did not affect EGG-NR. EGG-NR increased significantly at the lower color temperature. On the other hand, EGG-NI significantly increased at the lower illuminance. These results suggest that parasympathetic nervous activity has a predominant effect on gastric activity in different lighting environments. Therefore, EGG measurements may be useful indicators for illumination environment studies.

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Section: Introductionmentioning

confidence: 89%

The Influence of Taste Stimuli and Illumination on Electrogastrogram Measurements

Jin

Katsuura

Iwanaga

et al. 2007

J Physiol Anthropol

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“…This electrical signal is known by a variety of names, one of which is "basic electrical rhythm," or BER. The BER from the human stomach has been measured using a variety of electrode placement techniques, including sewing the electrodes directly onto the serosal surface of the stomach [2]- [12], passing the electrodes perorally into the stomach and either suctioning them to the mucosal lining [4], [7], [Ill-[I61 or af- fixing them by use of an external magnet [ 171, or placing them cutaneously on the abdominal surface [2], [12], 1161- [26]. All of these methods have revealed a human gastric electrical signal of approximately three cycles/ minute (cpm).…”

mentioning

confidence: 99%

Use of spectral analysis in the detection of frequency differences in the electrogastrograms of normal and diabetic subjects

Pfister

Hamilton

Nagel

et al. 1988

IEEE Trans. Biomed. Eng.

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Abstract-Patients with long term insulin-dependent diabetes are frequently troubled by gastric complaints consisting of early satiety, bloating, nausea, and often episodic vomiting. We a r e interested in investigating the basal electrical rhythm (BER) of the stomach to determine if abnormalities of the BER &cur in association with those gastric complaints.We recorded the basal electrical signal of the stomach in nine patients with diabetic gastroparesis and in ll normal volunteers. Since visual interpretation is difficult a t times and somewhat subjective, we developed a microcomputer-based running spectral analysis technique (overlapping FFT's) to analyze the recordings. The interpretation of these data was aided by pseudo-three-dimensional and gray-scale graphics plots which we created on the microcomputer.We found no significant differences between the two subject groups in the prefed state but found a significantly higher proportion of episodes of high frequency, or "tachygastria," in the diabetic group in the post fed state (15.4-6.2 percent). This difference was also reflected in the higher postfed mean "peak" frequency of the diabetics. Both diabetics and normals show a n increase in the mean of the peak frequency from pre-to postfed states, but the normals do not show a n increase in episodes of tachygastria.

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“…It is usually found in normal subjects (Nelsen et al, 1968;Duthie et al,1971 ;Kaneko et al,1995). Its onset is probably mediated by the physical distention of the stomach due to food ingestion.…”

Section: Discussionmentioning

confidence: 97%

“…Visual inspection was performed to determine the presence or absence of the transient frequency decrease (0.02 to 0.03 Hz), postprandial dip, which is usually found in the EGG in normal subjects (Nelsen et al, 1968 ;Duthie et al, 1971 ;Kaneko et al,1995) immediately after food intake ( Figure 3). 0.8 mg/kg of scopolamine (TANABE SEIYAKU CO., LTD, Osaka, Japan), an anticholiner gic agent, was intravenously administered in the right forearm of the subject after 20 minutes recording of normal EGG, and followed by 20 minutes recording.…”

Section: Discussionmentioning

confidence: 99%

Postprandial Electrogastrographic Changes with or without Parasympathetic Nerve Blockade.

Kobayashi

Kamiya

1997

J. Smooth Muscle Res.

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To investigate the relationship between postprandial electrogastrographic changes and parasympathetic nervous activity, 10 healthy adult males (20 to 29 years old) volunteered for EGG recording in the following conditions : 1) butylscopolamine bromide (scopolamine) administration to block parasympathetic nervous activity ; 2) after food intake ; and 3) during a postprandial period after the parasympathetic blockade. Power spectral analysis of EGG was performed according to Akaike's autoregressive model. When the parasympa thetic nervous activity was blocked, there were no changes in the dominant frequency of the EGG. During the postprandial period, the dominant frequency in EGG increased significantly, and postprandial dip (transient frequency decrease after the food intake) was observed in 8 of the 10 subjects. During the postprandial period after scopolamine adminis tration, the dominant frequency of EGG did not increase, and postprandial dip was observed in only two subjects. These results suggest that the parasympathetic nervous activity is involved in occurrence of postprandial gastric motor function and postprandial electrogas trographic changes.

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Clinical electrogastrography and its relationship to gastric surgery

Cited by 93 publications

References 7 publications

The Influence of Taste Stimuli and Illumination on Electrogastrogram Measurements

The Influence of Taste Stimuli and Illumination on Electrogastrogram Measurements

Use of spectral analysis in the detection of frequency differences in the electrogastrograms of normal and diabetic subjects

Postprandial Electrogastrographic Changes with or without Parasympathetic Nerve Blockade.

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