Electrogastrography prior to and following total gastrectomy, subtotal gastrectomy, and gastric tube formation

Homma, Shinsuke; Shimakage, Naohiro; Yagi, Minoru; Hasegawa, Jun; Sato, K; Matsuo, Hitoshi; Tamiya, Yoichi; Tanaka, Otsuo; Muto, Terukazu; Hatakeyama, K

doi:10.1007/bf02064997

Cited by 44 publications

(71 citation statements)

References 11 publications

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“…This finding was considered to reflect the contraction frequency (5.4 times per minute on average) observed with the Force Transducer. This difference in frequency compared to humans may reflect the fact that the potential frequency of the smooth muscle is higher in the lower digestive system than in the stomach [18]. Therefore, in our FFT analysis the frequency was classified as low frequency below 5 cpm, and high as frequency for 7 cpm or above.…”

Section: Discussionmentioning

confidence: 99%

The Application of Electrocecography for Evaluation of Cecum Motility in Horses.

Sasaki

Mizuno

Yoshihara

1998

The Journal of Veterinary Medical Science

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ABSTRACT. Electrogastrography (EGG), in which the electrical activity of the smooth muscular layer of the stomach is recorded percutaneously through the abdominal wall, has been applied in recent years to humans as a non-invasive method. In acute abdominal disease in horses, it is considered diagnostically useful to analyze digestive activity using EGG. Electrocecography (ECG) was examined to determine its effectiveness in evaluating equine digestive motility through comparison, after xylazine administration, between the results of the percutaneous ECG method and the results obtained using a strain-gauge force transducer (Force Transducer) chronically attached to the serous membrane of the cecum. As subjects, the test used six male thoroughbreds (average weight: 457.5 ± 9.2 kg). The test showed a reduction in both the percutaneous electrical potential of the cecum in ECG and in cecal contractions measured with the Force Transducer. After xylazine administration, an average rates of decrease of the amplitude from the control period were 17.8 ± 3.4% and 20.0 ± 4.6% respectively, demonstrating a significant correlation (r=0.90) between the two methods. On the other hand, power distribution centered around 6 cycles per minute in a Fourier transform (FFT) analysis of ECG, thought similer to the contraction frequency of 5.4 ± 3.0 per minute observed with the Force Transducer. After xylazine administration, the total frequency band (1.8-12 cycle per min) in the running spectrum total power in ECG decreased to 37.0 ± 5.1% of the pre-xylazine value. Based on these findings, it appears that the ECG potential reflected electrical activity of cecal origin, suggesting high clinical applicability of ECG to the percutaneous evaluation of equine cecal motility. -KEY WORDS: cecum, electrocecography, equine, motility, strain gauge force transducer.

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Section: Discussionmentioning

confidence: 99%

The Application of Electrocecography for Evaluation of Cecum Motility in Horses.

Sasaki

Mizuno

Yoshihara

1998

The Journal of Veterinary Medical Science

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“…Anxiety has also been reported to facilitate antral meal retention (Lorena et al, 2004). The epigastric 3-and 6-cpm groups electrical activity in the EGG were suggested to reflect those of the colon on the basis of the EGG results obtained after total gastrectomy (Pezzola et al, 1989;Homma et al, 1995Homma et al, , 1999. We have reported that gastric, intestinal and colonic myoelectric activity can be recorded using EGG (Homma et al, 1995: Homma, 1997: Homma et al, 1999, 2000.…”

Section: Gastric Activitymentioning

confidence: 95%

“…The epigastric 3-and 6-cpm groups electrical activity in the EGG were suggested to reflect those of the colon on the basis of the EGG results obtained after total gastrectomy (Pezzola et al, 1989;Homma et al, 1995Homma et al, , 1999. We have reported that gastric, intestinal and colonic myoelectric activity can be recorded using EGG (Homma et al, 1995: Homma, 1997: Homma et al, 1999, 2000. Topographical EGG maps were also drawn for the determination of maximal power foci (MPFs) in the resting state, during MDT and after consuming a meal (Homma, 1997: Homma et al, 1999, 2000: Zhou et al, 1997.…”

Section: Gastric Activitymentioning

confidence: 99%

“…Topographical EGG maps were also drawn for the determination of maximal power foci (MPFs) in the resting state, during MDT and after consuming a meal (Homma, 1997: Homma et al, 1999, 2000: Zhou et al, 1997. It appears that the infraumbilical 3 cpm EGG activity might reflect colonic electrical activity (Pezzola et al, 1989;Sarna et al, 1989;Homma et al, 1995Homma et al, , 1999Amaris et al, 2002). EGG records the gastrointestinal electrical activity or myoelectric activity, which reflects some of the motility (Smout et al, 1980: Mintchef andBowes, 1997).…”

Section: Gastric Activitymentioning

confidence: 99%

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Local differences in electrogastrographic responses to the stress of the mirror drawing test (MDT) as determined by multichannel electrogastrography

Homma

2012

J. Smooth Muscle Res.

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Electrogastrograms (EGGs) were recorded in human subjects (n=58) at 16 locations on the thoraco-abdominal surface before (at rest) and during the stress of the mirror drawing test (MDT) and after having a test meal. The power amplitude ratios and power content ratios of MDT to rest (MDT/rest) and postprandial state to rest (PPR/rest) were compared between gastric channels 5 and 8, and the infraumbilical channels 12, 13, 14, 15, and 16. Generally, the ratio of the 3-cpm group in channels 5 and 8 was lower than that of the infraumbilical channels 12-16 during MDT. In contrast, the ratios were higher in the epigastric channels than in the infraumbilical channels after a test meal. Significant differences between the epigstric and infraumbilical channels were found in the comparisons of the power content ratios. The infraumbilical channels were facilitated and the epigastric channels inhibited during MDT. After eating a meal, in contrast, the postprandial epigastric 3-cpm EGGs were facilitated. The epigastric 3-cpm EGG activity reflects gastric myoelectric activity, while the infraumbilical 3-cpm activity reflects that of the colon. Therefore, it is suggested that the acute stress of the MDT generally inhibited the gastric EGG and facilitated the colonic EGG, indicating gastric inhibition and colonic facilitation. The topographic EGG maps of the power content ratios and the absolute power ratios visually confirmed these findings.

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“…An EGG is not usually needed if gastric emptying is delayed. Studies have evaluated EGG in healthy subjects (98), in patients with motility-like dyspepsia (29), chronic intestinal pseudo-obstruction (33,40), and chronic constipation (100) and after gastrectomy (63). EGG findings have also been correlated with scintigraphy (19), manometry (118), or ultrasound (99).…”

Section: Testing Gastric Myoelectrical Activitymentioning

confidence: 99%

Methods for measurement of gastric motility

Szarka¹,

Camilleri²

2009

American Journal of Physiology-Gastrointestinal and Liver Physi

103

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Szarka LA, Camilleri M. Methods for measurement of gastric motility. Am J Physiol Gastrointest Liver Physiol 296: G461-G475, 2009. First published January 15, 2009 doi:10.1152/ajpgi.90467.2008There is an array of tests available to measure gastric motility. Some tests measure end points, such as gastric emptying, that result from several different functions, whereas other tests are more specific and test only a single parameter, such as contractility. This article reviews the tests most commonly available in practice and research to evaluate in vivo the gastric functions of emptying, accommodation, contractility, and myoelectrical activity. The rationale for testing, the relative strengths and weaknesses of each test, and technical details are summarized. We also briefly indicate the applications and validations of the tests for use in experimental animal studies. contractility; emptying; accommodation; gastroparesis; dyspepsia ASSESSMENT OF THE MOTOR FUNCTIONS (motility) of the stomach is important in studies of gastric physiology and pathophysiology. Although not generally applied in gastroenterological practice, there is increasing use of tests to evaluate gastric function, particularly less invasive tests in clinical settings.There is an array of tests available to measure gastric motility. Some tests measure end points, such as gastric emptying, that result from several different functions, whereas other tests are more specific and test only a single parameter, such as contractility. This article reviews the tests most commonly available in practice and research to evaluate in vivo the gastric functions of emptying, accommodation, contractility, and myoelectrical activity. The rationale for testing, the relative strengths and weaknesses of each test, and technical details are summarized. A brief discussion is also provided for methods that have been used in animals to study motor functions of the stomach in animals. Tests to Evaluate Gastric Emptying of SolidsGastric emptying is a composite end point reflecting a variety of functions including gastric accommodation, the pressure gradient between the proximal and distal stomach, and antropyloroduodenal contractility and coordination. The trituration of solids and emptying of solid and liquid food from the stomach are arguably the most important physiological functions of the stomach. Abnormal gastric emptying, either accelerated at 1 h or delayed at 4 h, is among the factors that contribute to reporting of dyspepsia or the development of postprandial symptoms after meal challenge (35). For all tests of gastric motility and emptying, there are standard precautions (1): 1) Drugs affecting gastric motility (e.g., anticholinergics, narcotics, and prokinetics) are stopped for 48 h prior to the test, and the study is performed in the morning after an overnight fast. 2) Diabetic subjects should have a glucose level Ͻ275 mg/dl. 3) At the time the meal is ingested, Type 1 diabetic patients should receive half of their normal insulin dose. Gastric Emptying Scintigrap...

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Electrogastrography prior to and following total gastrectomy, subtotal gastrectomy, and gastric tube formation

Cited by 44 publications

References 11 publications

The Application of Electrocecography for Evaluation of Cecum Motility in Horses.

The Application of Electrocecography for Evaluation of Cecum Motility in Horses.

Local differences in electrogastrographic responses to the stress of the mirror drawing test (MDT) as determined by multichannel electrogastrography

Methods for measurement of gastric motility

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