Duodenal Ulceration and the Pyloric Sphincteric Cylinder

Keet, Albertus D.

doi:10.1007/978-3-642-77708-0_30

Cited by 2 publications

(5 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the present study, the average thickness of the pyloric orifice was 4.8 mm: 5.2±6.18 mm in males and 4.5±0.15 mm in females, with no significant difference. According to other authors like Crymble PT and Walmsleys T, it is 3.8-8.5 mm, as per Knight CD, it is 5.1 mm, and as per Keet AD and Heydenrych J, it is 7 mm [ 18 , 19 , 9 ]. Craver WL has noted in 13 fresh specimens that it was 4.4 mm, and in 10 fixed specimens, 7.1 mm [ 20 ].…”

Section: Discussionmentioning

confidence: 97%

“…The stomach location and size are dependent on the body weight of individuals [ 8 ]. The GC is directed mainly forward and is 4-5 cm longer than the LC [ 9 ]. Torgerssen J observed that the filling of the stomach increased the length of the gastric curvatures and the proximal part of the stomach [ 10 ].…”

Section: Discussionmentioning

confidence: 99%

“…In 24% of the specimens, the pyloric orifice was towards the left of the midline, which could be due to the deviation of the stomach due to pressure of the neighboring organs. The pyloric orifice is present in the midline or left when empty and markedly to the right when full [ 9 ]. The degree of the pylorus projected to the right side is worthy of attention, as it could be a sign of duodenal/pyloric strictures [ 3 ].…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

A Study of Variations of the Stomach in Adults and Growth of the Fetal Stomach

Karnul¹,

Murthy²

2022

Cureus

View full text Add to dashboard Cite

The stomach is a site for various pathological conditions like congestive hypertrophic pyloric stenosis, peptic ulcer, gastroesophageal reflux disease (GERD), and carcinoma of the stomach. Further, for the treatment of obesity too, surgical manipulation of the stomach is done by a bariatric surgeon. With the availability of a wide range of diagnostic tools like barium meals, USG, CT scan, MRI, and endoscopy, it is possible to identify the variations in the position and shape of the stomach and developmental defects while diagnosing diseases. As thorough knowledge of stomach position and variations will help in preoperative planning and preventing inadvertent damage during surgeries, this topic was taken up for research.

show abstract

Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

A Study of Variations of the Stomach in Adults and Growth of the Fetal Stomach

Karnul¹,

Murthy²

2022

Cureus

View full text Add to dashboard Cite

show abstract

“…Van Nueten et al, 1990; Keet, 1993; Ramkumar and Schulze, 2005; Rayner et al, 2012). With this information has come the recognition that the sphincter executes complex, dynamic motor programs that orchestrate transpyloric movements of chyme and materials.…”

Section: Discussionmentioning

confidence: 99%

“…Both the fact that the pylorus plays crucial roles in gastrointestinal (GI) physiology and the corollary that the sphincter is affected in multiple GI pathophysiologies are universally recognized (see reviews: Van Nueten et al, 1990; Keet, 1993; Mayer, 1994; Ramkumar and Schulze, 2005). The sphincter paces gastric emptying of food and fluids, in the form of chyme, to the intestines, where the material is broken down more completely and then absorbed.…”

Section: Introductionmentioning

confidence: 99%

Organization of vagal afferents in pylorus: Mechanoreceptors arrayed for high sensitivity and fine spatial resolution?

Powley¹,

Hudson²,

McAdams³

et al. 2014

Autonomic Neuroscience

View full text Add to dashboard Cite

The pylorus is innervated by vagal mechanoreceptors that project to gastrointestinal smooth muscle, but the distributions and specializations of vagal endings in the sphincter have not been fully characterized. To evaluate their organization, the neural tracer dextran biotin was injected into the nodose ganglia of rats. Following tracer transport, animals were perfused, and their pylori and antra were prepared as whole mounts. Specimens were processed to permanently label the tracer, and subsets were counterstained with Cuprolinic blue or immunostained for c-Kit. Intramuscular arrays (IMAs) in the circular muscle comprised the principal vagal afferent innervation of the sphincter. These pyloric ring IMAs were densely distributed and evidenced a variety of structural specializations. Morphometric comparisons between the arbors innervating the pylorus and a corresponding sample of IMAs in the adjacent antral circular muscle highlighted that sphincter IMAs branched profusely, forming more than twice as many branches as did antral IMAs (means of 405 vs. 165, respectively), and condensed their numerous neurites into compact receptive fields (~48% of the area of antral IMAs) deep in the circular muscle (~6 μm above the submucosa). Separate arbors of IMAs in the sphincter interdigitated and overlapped to form a 360° band of mechanoreceptors encircling the pyloric canal. The annulus of vagal IMA arbors, putative stretch receptors tightly intercalated in the sphincter ring and situated near the lumen of the pyloric canal, creates an architecture with the potential to generate gut reflexes on the basis of pyloric sensory maps of high sensitivity and fine spatial resolution.

show abstract

Duodenal Ulceration and the Pyloric Sphincteric Cylinder

Cited by 2 publications

References 15 publications

A Study of Variations of the Stomach in Adults and Growth of the Fetal Stomach

A Study of Variations of the Stomach in Adults and Growth of the Fetal Stomach

Organization of vagal afferents in pylorus: Mechanoreceptors arrayed for high sensitivity and fine spatial resolution?

Contact Info

Product

Resources

About