Results 201 to 210 of about 26,116 (219)
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Chalasia of the Upper Esophageal Sphincter
Acta Radiologica. Diagnosis, 1985Four patients with absence of stable tonus (chalasia) of the pharyngo-esophageal segment, i.e., the cricopharyngeal muscle and the adjacent cervical esophagus, are reported. The tonus between swallows was completely absent in 2 patients and was seriously impaired in 2.
O, Ekberg, S, Lindgren, G, Nylander
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The Lower Esophageal Sphincter
2014The lower esophageal sphincter (LES) is a complex area of circular muscle on the distal esophagus and proximal stomach several centimeters in length. Together with the diaphragmatic crura and the structure of the angle of His, the LES makes up the backbone of the gastroesophageal reflux barrier.
Christina L. Greene, Steven R. DeMeester
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The Lower Esophageal Sphincter
Annals of Internal Medicine, 1975Current concepts in physiology and pathophysiology of lower esophageal sphincteric mechanism are reviewed. With recent advances in manometric method for more accurate in-vivo human studies combined with in-vivo and in-vitro studies in animal models, there is much information regarding function of this sphincter.
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Pathogenesis of Lower-Esophageal-Sphincter Incompetence
New England Journal of Medicine, 1973Abstract Since patients with symptomatic gastroesophageal reflux have diminished lower-esophagealsphincter pressure, we studied the pathogenesis of this diminished sphincteric pressure. In 23 patients with symptomatic reflux as compared to 20 controls, the lower-esophageal-sphincter response to direct muscle stimulation by a parasympathomimetic drug ...
W H, Lipshutz +3 more
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Upper esophageal sphincter function during belching
Gastroenterology, 1986We studied the mechanism of belching with specific attention to the upper esophageal sphincter (UES) in 14 normal volunteers. Belching occurred by the following sequence of events: lower esophageal sphincter relaxation; gastroesophageal gas reflux, recorded manometrically as a gastroesophageal common cavity phenomenon; UES relaxation ...
P J, Kahrilas +5 more
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Gastrin and Lower Esophageal Sphincter Tone
Archives of Internal Medicine, 1978The gastrointestinal polypeptide gastrin, found in great abundance in the gastric antrium, was shown in 1970 to have a very dramatic effect in stimulating the smooth muscle segment of the lower esophageal sphincter (LES), and in causing marked increases in pressure in this region.
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Hypertensive Lower Esophageal Sphincter: A Reappraisal
Southern Medical Journal, 1978The hypertensive lower esophageal sphincter (LES) is defined as one with normal relaxation and an average LES-intragastric pressure gradient greater than or equal to 40 mm Hg. Case histories of two patients with hypertensive LES and normal peristalsis in the body of the esophagus are contrasted to that of a patient with a hypertensive LES and diffuse ...
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Lower esophageal sphincter function in cirrhosis
The American Journal of Digestive Diseases, 1977Lower esophageal sphincter (LES) function in cirrhosis was evaluated using an infused manometric system. LES pressure (LESP) in 10 subjects with cirrhosis (22 +/- 1 mm Hg) (mean +/- SE) was not significantly (P greater than 0.05) different from that of 10 control subjects (21 +/- 1 mm Hg) but was significantly (P less than 0.01) greater than the LESP ...
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Lower esophageal sphincter or upper gastric sphincter?
Diseases of the Esophagus, 1997D O, Castell, P O, Katz
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