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Topic: Pyloric valve

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Pyloric sphincter

Sphincter

Stomach

Esophagus

Muscle

Jejunum

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	DS vs. RNY
		Your pyloric valve continues to regulate the emptying of the stomach contents into the duodenum and all of the hormones and secretions that occur in the duodenum continue after surgery.
		Since our pyloric valve and duodenum are left functioning as before, we DS patients don't have dumping syndrome, nor a risk of staple line problems, clogging of the anastamosis, ulcers at the stoma, etc. (remember, we don't have pouches or stomas).
		The pyloric valve is a sphincter muscle that opens and closes to regulate the release of stomach contents into the digestive tract.
	www.duodenalswitch.com /procedure/ds_vs__rny/ds_vs__rny.html (1562 words)

	XI. Splanchnology. 1F. The Stomach. Gray, Henry. 1918. Anatomy of the Human Body.
		The pyloric orifice communicates with the duodenum, and its position is usually indicated on the surface of the stomach by a circular groove, the duodenopyloric constriction.
		In the pyloric portion are seen: (a) the elevation corresponding to the incisura angularis, and (b) the circular projection from the duodenopyloric constriction which forms the pyloric valve; the separation of the pyloric antrum from the rest of the pyloric part is scarcely indicated.
		The pyloric valve (valvula pylori) is formed by a reduplication of the mucous membrane of the stomach, covering a muscular ring composed of a thickened portion of the circular layer of the muscular coat.
	www.bartleby.com /107/247.html (3094 words)

	Dorlands Medical Dictionary
		valve of foramen ovale: in the adult, a crescentic ridge on the left side of the interatrial septum, representing the edge of what was the septum primum before fusion of the septum; called also falx septi.
		pylo´ri pyloric valve: a prominent circular fold of mucous membrane at the pyloric orifice of the stomach.
		semiluna´ris ante´rior val´vae trun´ci pulmona´lis [TA] the anterior cusp of the valve of the pulmonary trunk.
	www.mercksource.com /pp/us/cns/cns_hl_dorlands.jspzQzpgzEzzSzppdocszSzuszSzcommonzSzdorlandszSzdorlandzSzdmd_v_02zPzhtm (3842 words)

	Pyloric Stenosis
		Pyloric stenosis is the narrowing of part of the stomach (the pylorus) that leads into the small intestines.
		The diagnosis of pyloric stenosis is made when an infant has a history of progressive forceful vomiting.
		The pyloric valve (opening at the bottom of the stomach that regulates the stomach emptying) becomes bigger over time and blocks the stomach from emptying.
	www.pedisurg.com /PtEduc/Pyloric_Stenosis.htm (696 words)

	DrGreene Content
		In pyloric stenosis, for example, the pyloric valve is too tight to permit stomach contents to pass through easily.
		Pyloric stenosis can occur in boys or girls, but it is much more common in boys, especially in firstborn boys.
		Most children with pyloric stenosis are not born with it, but vomiting usually starts at around 3 to 5 weeks of age as the pylorus tightens.
	www.drgreene.org /blank.cfm?id=21&action=detail&ref=1166 (527 words)

	Chapter 2 (page 3)
		Clarity is not forthcoming from the descriptions of Jenkinson (l955), who stated that the pyloric canal, approximately 3.0 cm in length, was located on the oral side of the "pyloric sphincter"; the antrum was said to be the region extending from the pyloric canal to the incisura angularis on the lesser curvature (Fig.
		Grossman (l958) stated that many writers had commented on the lack of uniformity of terms and the ambiguity of some of them; according to him the pyloric portion was usually divided into the pyloric canal adjacent to the sphincter, and the pyloric vestibule or antrum adjacent to the corpus.
		He preferred to name functional divisions of the stomach in terms of their secretory characteristics; "pyloric gland area" was suggested for the mucus secreting, gastrin producing zone and "oxyntic gland area" for the acid producing region.
	med.plig.org /2 (709 words)

	pyloric stenosis (Site not responding. Last check: 2007-10-28)
		Pyloric stenosis is a condition of the very young infant that appears in the form of progressively severe vomiting starting in the first few weeks of life.
		It is caused by overdevelopment of the pyloric valve muscle like a bodybuilder's overgrown biceps and subsequent blockage of the outflow tract from the stomach to the small intestine.
		Ultrasound picture for the curious - 65K The outline shows the boundaries of the pyloric valve, which in this case is twice as thick and twice as long as it should be.
	www.drhull.com /EncyMaster/P/pyloric_stenosis.html (330 words)

	Chapter 38 (page 188)
		Gastrostomy showed that the entire mucous membrane of the pyloric region was freely mobile on the underlying muscle coat and that it could be pushed through the pylorus, causing invagination of a complete mucous membrane cuff into the duodenum.
		At operation it was found that the pyloric mucous membrane was freely mobile upon the muscle coat and that it had prolapsed through the pylorus into the duodenum.
		Cole (l928) showed that the pyloric valve is normally displaced into the duodenum after death.
	med.plig.org /38/index.html (871 words)

	Pyloric Stenosis
		Acquired stenosis due to masses in the wall of the pyloric antrum has also been seen in young horses, possibly secondary to ulcers, and a mass of unknown cause was found at the pyloroduodenal junction in a horse.
		Since the stenosis is usually distal to the pylorus rather than truly pyloric, such dilatation does not damage the pyloric ring, although it may on occasion lead to perforation of the first part of the duodenum.
		Hypertrophy of the muscularis was noted in all three cases, and postmortem measurements indicate that the pylorus was thickened at the expense of the lumer as pyloric circumference was normal.
	homepage.mac.com /mattocks/morfz/pyloric.html (1238 words)

	Pyloric Stenosis - DrGreene.com
		In pyloric stenosis, for example, the pyloric valve is too tight to permit stomach contents to pass through easily.
		Pyloric stenosis can occur in boys or girls, but it is much more common in boys, especially in firstborn boys.
		Most children with pyloric stenosis are not born with it, but vomiting usually starts at around 3 to 5 weeks of age as the pylorus tightens.
	www.drgreene.com /21_1166.html (654 words)

	Pyloric Stenosis
		Acquired stenosis due to masses in the wall of the pyloric antrum has also been seen in young horses, possibly secondary to ulcers, and a mass of unknown cause was found at the pyloroduodenal junction in a horse.
		Since the stenosis is usually distal to the pylorus rather than truly pyloric, such dilatation does not damage the pyloric ring, although it may on occasion lead to perforation of the first part of the duodenum.
		Hypertrophy of the muscularis was noted in all three cases, and postmortem measurements indicate that the pylorus was thickened at the expense of the lumer as pyloric circumference was normal.
	www.morfz.com /pyloric.html (1238 words)

	Bloat - An Article by Nancy Liebes
		Her pyloric valve appeared small and deformed which caused food to leave her stomach too slowly and bacteria would build up.
		We’ve spoken to the attending veterinarians in almost every case and have been able to ask them to check the pyloric valve, and in all but one case it needed to be tacked open.
		The deformities in the pyloric valves we’ve encountered could be contributing greatly to the bacterial build-up, but we have no proof of any of this.
	www.briard.com /about/liebesbloat.html (3052 words)

	Central Valley Bariatrics - Other Surgical Treatments
		The pyloric valve is bypassed in this procedure.
		The stomach is portioned off with staples and then a stilastic ring is put into the gastric tissue to simulate the pyloric valve and to restrict the amount of food eaten at a given time.
		The procedure has the same pouch construction as the Roux en Y procedure but incorporates a silastic ring around distal end of the pouch to simulate the pyloric valve and prevent stretching of the opening between the pouch and the section of small bowel.
	www.dssurgery.com /generalinformation/other_treatments.php (363 words)

	JIS: Tschinkel 2.12.2002
		The serotonergic innervation of the larval mosquito gut projects from the brain via four axons that pass along the length of the gut from esophagus to ileum (Figure 1).
		The cardiac valve is encircled by a ring of peptidergic cells characterized by multiple short processes that give them a stellate shape somewhat reminiscent of vertebrate enteric autonomic neurons (Figure 2A).
		As in larvae and pupae, the neurons giving rise to the axons in the pyloric ring were not visible in the gut itself, but several RF-I positive axons that course along the surface of the ileum join the ring (arrows, Figure 17B).
	www.insectscience.org /5.20 (6509 words)

	Minnesota Children with Special Health Needs (MCSHN) (Site not responding. Last check: 2007-10-28)
		Pyloric stenosis is a condition of infants where there is an obstruction in the gastrointestinal tract at the lower end of the stomach due to enlargement of the pyloric valve (also called the pylorus).
		The pyloric valve regulates emptying of stomach contents into the intestine, and for an unknown reason it becomes enlarged during early weeks of life.
		Pyloric stenosis occurs in 1 of every 200-300 live births and is four times more common in males.
	www.health.state.mn.us /divs/fh/mcshn/bd/pyloric.htm (478 words)

	Lesson 6 - The Digestive System
		From the small intestines, the remaining material, which by now is mostly nondigestable fiber, water and waste, is passed through yet another sphincter valve, the ileocecal valve, to the large intestine or colon.
		In the colon, any remaining water and electrolytes are absorbed, and the waste material is retained until it is time for it to be evacuated from the body through the rectum and anus.
		The sphincter valve located between the small intestines and the large intestines (colon) is known as the _____________.
	www.naturalhealthschool.com /6_4.html (252 words)

	JIS: Tschinkel 2.12.2002
		Nerve tracts extend from the VG to the salivary glands, midgut, and crops of adults (Clements, 1992).
		For both mosquito species, the larval midgut consists of a cardiac valve surrounding the junction with the foregut, eight gastric caeca, and an anterior and posterior stomach extending to the Malpighian tubules and hindgut (Fig.
		The midgut ends at the junction of the Malpighian tubules and pyloric valve of the hindgut.
	www.insectscience.org /1.3 (5827 words)

	Common Topics - The Department of Pediatric Surgery
		Pyloric Stenosis is an abnormal thickening of the muscle between the stomach and the small intestine.
		Pyloric stenosis occurs most commonly in infants between the ages of 1 week and 10 weeks of age.
		Often, children with pyloric stenosis are dehydrated because of the vomiting.
	www.chob.edu /pedsurg/common.asp (4868 words)

	Animal Planet :: Dog Health Center -- Digestive (Site not responding. Last check: 2007-10-28)
		Once the initial stomach digestive process is complete, the partially digested food exits the stomach through the pyloric sphincter area and then enters the duodenum (small intestine).
		The pyloric sphincter constricts and dilates to regulate the flow of food from the stomach into the small intestine.
		Occasionally, for unknown reasons, the pyloric sphincter constricts or spasms, causing an abnormal narrowing (stenosis) of the entrance into the small intestine.
	animal.discovery.com /guides/healthcenter/dogs/organ/pyloric.html (400 words)

	Bernstein Clinics (Site not responding. Last check: 2007-10-28)
		The hallmark of GRDS is the preservation of the pyloric valve.
		The pyloric valve is at the last portion of the stomach and acts as a gateway to the small bowel.
		The food product needs to be of the right chemical and mechanical consistency before the pyloric valve will allow the food product to progress into the small bowel.
	www.bariatricsweightloss.com /bernstein_diet/bernstein_clinics.html (962 words)

	Bile reflux - OhioHealth
		At the same time, food enters the small intestine through the pyloric valve, a heavy ring of muscle that sits at the outlet of your stomach.
		Ordinarily, the pyloric valve opens just slightly — enough to release about an eighth of an ounce of liquefied food at a time, but not enough to allow digestive juices to flow back into the stomach.
		Most damage to the pyloric valve occurs as a complication of gastric surgery, including total removal of the stomach (gastrectomy) and gastric bypass operations for weight loss.
	www.ohiohealth.com /bodymayo.cfm?id=6&action=detail&ref=2647 (1969 words)

	Pyloric Stenosis - InfantRefluxDisease.com
		The stomach has two valves, one at the top (lower esophageal sphincter-associated with reflux) where food enters and one at the bottom where food leaves to enter the small intestine.
		It is the valve at the bottom of the stomach or pylorus that is affected in pyloric stenosis.
		A physical exam by the doctor can sometimes show an enlarged pyloric valve and an upper GI may be performed to determine if the baby has pyloric stenosis.
	infantrefluxdisease.com /pyloric-stenosis.php (481 words)

	Vaccinations and Immunity
		Knoxville, Tennessee - The number of children diagnosed with a problem called pyloric stenosis seems to have been increasing over the last couple of decades.
		The problem involves an overgrowth of muscle tissue at the pyloric valve where the stomach empties into the small intestine.
		Until recently, the medical community generally considered pyloric stenosis to be a malformation that people were born with, which couldnt be prevented.
	yesmamm.tripod.com /id27.htm (395 words)

	Digestion
		The movement of food from the mouth into the stomach is achieved by the act of swallowing, or deglutititon (the degulutition center is located in the medulla oblongata and the returning impulses cause the soft palate and uvula to move upward to close off the nasopharynx).
		The small intestine begins at the pyloric sphincter of the stomach, coils through the central and inferior part of the abdominal cavity, and eventually opens into the large intestine.
		The opening from the ileum into the large intestine is guarded by a fold of mucous membrane called the ileocecal sphincter (valve), which allows materials from the small intestine to pass into the large intestine.
	www1.fccj.edu /sspring/digestion.htm (5509 words)

	Printer Friendly Version (Site not responding. Last check: 2007-10-28)
		The stomach has two valves, one at the top (lower esophageal sphincter-associated with reflux) where food enters and one at the bottom where food leaves to enter the small intestine.
		It is the valve at the bottom of the stomach or pylorus that is affected in pyloric stenosis.
		A physical exam by the doctor can sometimes show an enlarged pyloric valve and an upper GI may be performed to determine if the baby has pyloric stenosis.
	www.infantrefluxdisease.com /ppyloricstenosis.htm (345 words)

	Pyloric stenosis (forceful vomiting) (0-12 months)
		But forceful vomiting in a newborn is the hallmark symptom of pyloric stenosis, a disorder in which the pylorus, the valve between the stomach and the small intestine, becomes so thick with muscle that it blocks the flow of food.
		Surgery to correct pyloric stenosis is the second most common type in newborns (after hernia corrections), so doctors get plenty of practice.
		No one knows why pyloric stenosis develops in some newborns and not in others; only that it's five times more common in boys than in girls, and for some reason is more likely in firstborns.
	www.babycenter.com /refcap/baby/babyills/10899.html (1093 words)

	The Digestive Tract of the Pig
		At the end of the esophagus is the cardiac valve, which prevents food from passing from the stomach back into the esophagus.
		The small intestine is a complex tube which lies in a spiral, allowing it to fit in a small space (Figure 4).
		A "blind gut" or cecum is located at the beginning of the large intestine (Figure 5).
	edis.ifas.ufl.edu /AN012 (1396 words)

	pyeloric stenosis or incompetent valve and gasroparesis am i in trouble? - Gastroenterology Support Forum
		Pyloric stenosis is a narrowing of the pyloric valve between the stomach and the duodenum.
		Chyme moves out of the stomach through the pyloric valve at the bottom of the stomach.
		The small opening called the pyloric valve is at least partially blocked and not allowing food to move into the duodenum and small intestines.
	www.medhelp.org /forums/GIsupport/messages/3.html (435 words)

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