Effects of partitioning operations on the electrical activity of the human stomach

Halpern, Norman B.; Shepard, Richard B.; Laws, Henry L.; Jimenez, Hernan; Aldrete, Joaquín S.

doi:10.1016/0022-4804(82)90103-2

Cited by 4 publications

(4 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Hinder and Kelly (11) reported in a series of 26 patients that slow-wave activity could never be recorded in the fundus or cardia. Halpern et al (10) reported that low-amplitude fundal activity could be detected in 4 of 138 recordings from 18 patients (3 of the fundal recordings being from the same patient), whereas Waldhausen et al (34) reported that fundal slow waves were found in 87-94% of patients. Our data support the finding that the fundus is usually devoid of slow waves, and it may be that only a small percentage of the population have fundal slow-wave activity.…”

Section: Discussionmentioning

confidence: 97%

See 1 more Smart Citation

Origin and propagation of human gastric slow-wave activity defined by high-resolution mapping

O’Grady

Cheng

et al. 2010

American Journal of Physiology-Gastrointestinal and Liver Physi

245

403

View full text Add to dashboard Cite

Slow waves coordinate gastric motility, and abnormal slow-wave activity is thought to contribute to motility disorders. The current understanding of normal human gastric slow-wave activity is based on extrapolation from data derived from sparse electrode recordings and is therefore potentially incomplete. This study employed high-resolution (HR) mapping to reevaluate human gastric slow-wave activity. HR mapping was performed in 12 patients with normal stomachs undergoing upper abdominal surgery, using flexible printed circuit board (PCB) arrays (interelectrode distance 7.6 mm). Up to six PCBs (192 electrodes; 93 cm(2)) were used simultaneously. Slow-wave activity was characterized by spatiotemporal mapping, and regional frequencies, amplitudes, and velocities were defined and compared. Slow-wave activity in the pacemaker region (mid to upper corpus, greater curvature) was of greater amplitude (mean 0.57 mV) and higher velocity (8.0 mm/s) than the corpus (0.25 mV, 3.0 mm/s) (P < 0.001) and displayed isotropic propagation. A marked transition to higher amplitude and velocity activity occurred in the antrum (0.52 mV, 5.9 mm/s) (P < 0.001). Multiple (3-4) wavefronts were found to propagate simultaneously in the organoaxial direction. Frequencies were consistent between regions (2.83 +/- 0.35 cycles per min). HR mapping has provided a more complete understanding of normal human gastric slow-wave activity. The pacemaker region is associated with high-amplitude, high-velocity activity, and multiple wavefronts propagate simultaneously. These data provide a baseline for future HR mapping studies in disease states and will inform noninvasive diagnostic strategies.

show abstract

Section: Discussionmentioning

confidence: 97%

“…All previous studies of normal human gastric slow-wave propagation have employed a limited number of recording electrodes (typically 4 -8) sutured to the gastric serosa (10,11,22). Although these techniques have been instrumental in outlining the general pattern of gastric slow-wave activity, they also have some important limitations.…”

mentioning

confidence: 99%

Origin and propagation of human gastric slow-wave activity defined by high-resolution mapping

O’Grady

Cheng

et al. 2010

American Journal of Physiology-Gastrointestinal and Liver Physi

245

403

View full text Add to dashboard Cite

show abstract

“…Surgeries carried out on the stomach interfere with electromyographic standards and consequently on the contracting capacity of this organ. Numerous studies in the literature have demonstrated alterations in gastric leakage when gastrectomies occur and, especially, when there is a lesion of the vagus, since the degree of retardation or acceleration of the leakage will depend on the technique used, the area of the gastric section and the type of vagotomy carried out (8,13,21,24) .…”

Section: Commentsmentioning

confidence: 99%

“…Electromyographic alterations following gastric surgeries have been discussed in the literature (2,13,27) . The excluded stomach in RYGBP maintains its innervation.…”

Section: Introductionmentioning

confidence: 99%

An experimental study of the electrical activity of the bypassed stomach in the Roux-en-Y gastric bypass

Ferraz

Leão

Campos

et al. 2007

Arq. Gastroenterol.

View full text Add to dashboard Cite

-Background -Surgical options for morbid obesity are diverse, and the Roux-en-Y gastric bypass, initially described by Fobi has gained popularity. Knowledge about the physiology of the bypassed stomach is limited because this newly produced segment of the stomach is inaccessible to endoscopic or contrast radiological studies. Aim -To evaluate the myoelectric activity of the bypassed stomach and its reply to the feeding. Methods -An experimental protocol was conducted to evaluate postoperative gastric bypassed motility in dogs submitted to the Roux-en-Y gastric bypass procedure. Two groups of five animals were studied on postoperative fasting and after a standard meal, recording electrical response and control activity. Both control and Roux-en-Y gastric bypass operated study group had a pair of electrodes placed on three points of the remaining stomach: fundus, body and antrum. Data registration was performed after complete ileus resolution, and analysed with DATA Q Inst. series 200. Results -The results achieved on the conditions of this study suggest that: 1. the remaining stomach maintain the same pattern of motility; 2. there is a reduced fasting electromyography activity following the Roux-en-Y gastric bypass procedure; 3. significantly reduced fasting electric control activity when compared both groups, and a markedly reduced fasting response electric activity and; 4. the electric response to the feeding kept the same standard of the stomach, however in a statistically reduced way. Conclusion -The electrical activity of the bypassed stomach of Roux-en-Y gastric bypass procedure kept the same pattern but in a statistically reduced number of contraction.

show abstract

Electrogastrography: The Study of Gastric Myoelectric Activity. Possible Insights into Symptoms after Restrictive Bariatric Surgery

Greenstein¹,

Sarr²

2003

Obes Surg

View full text Add to dashboard Cite

Effects of partitioning operations on the electrical activity of the human stomach

Cited by 4 publications

References 9 publications

Origin and propagation of human gastric slow-wave activity defined by high-resolution mapping

Origin and propagation of human gastric slow-wave activity defined by high-resolution mapping

An experimental study of the electrical activity of the bypassed stomach in the Roux-en-Y gastric bypass

Electrogastrography: The Study of Gastric Myoelectric Activity. Possible Insights into Symptoms after Restrictive Bariatric Surgery

Contact Info

Product

Resources

About