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  • 1
    ISSN: 1432-1351
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Pharyngeal movements during feeding inNavanax inermis were filmed and correlated with known neural activity controlling the pharynx. Seven distinct components of feeding were identified. Occurrence of a component was in some cases fixed, in that once initiated the act went to completion, and in other cases reflex, in that tonic stimulus control was needed for the act to be maintained. As few as 2 or as many as 7 different motor acts could occur in a feeding sequence. The specific acts which make up a sequence were dependent upon the nature of the prey stimuli that elicited feeding: qualitatively as well as quantitatively different feeding sequences were elicited by prey of differing sizes or by prey which was withdrawn fromNavanax at different stages in a movement. The data indicate that the sequence of pharyngeal movements is not preprogrammed, but rather the sequence is appropriate to a specific type of prey. Flexibility in fitting a feeding sequence to the prey that elicits the sequence is achieved by combining in different ways a limited number of specific, fairly stereotyped motor acts.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-0509
    Keywords: Pneumatosis coli, diagnosis ; Barium enema, complications
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Intramural perforation of the colon proximal to the rectosigmoid is a rare complication of the barium enema examination. We present a case in which air and barium entered the wall of the transverse colon, and then dissected through the transverse mesocolon during double-contrast barium enema in an asymptomatic patient with no known underlying colonic disease.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Digestive diseases and sciences 32 (1987), S. 333-334 
    ISSN: 1573-2568
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Digestive diseases and sciences 32 (1987), S. 422-427 
    ISSN: 1573-2568
    Keywords: small intestine ; large intestine ; varices ; gastrointestinal bleeding ; portosystemic shunt ; portal hypertension ; cirrhosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Massive bleeding from jejunal varices in a young alcoholic with cirrhosis and portal hypertension ceased following a portocaval shunt. Although rare, bleeding from small or large bowel varices has a high mortality. In 62 cases, small or large bowel varices are almost always associated with a predisposing condition including previous abdominal surgery and portal hypertension from cirrhosis or other causes. Hematochezia without hematemesis and nonbleeding esophageal varices generally occur. Angiography is the best diagnostic test.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Digestive diseases and sciences 33 (1988), S. 1035-1039 
    ISSN: 1573-2568
    Keywords: chronic erosive gastritis ; varioliform gastritis ; verrucous gastritis ; hypertrophic gastritis ; adenomatous polyp ; gastric adenoma ; intestinal metaplasia ; gastric carcinoma ; surveillance endoscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Chronic erosive gastritis is a gastric mucosal lesion characterized by multiple, small, sessile elevations with central erosions. Symptoms typically resemble those in peptic ulcer disease. The elevations may persist and appear as sessile polyps after the erosions heal and symptoms resolve with therapy. Adenomatous transformation is reported in a patient with chronic erosive gastritis who had serial gastroscopies. This report suggests a possible association between chronic erosive gastritis and gastric neoplasia.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Digestive diseases and sciences 34 (1989), S. 942-947 
    ISSN: 1573-2568
    Keywords: histiocytic non-Hodgkin's lymphoma ; B-cell lymphoma ; pancreatic lymphoma ; pancreatic cancer ; pancreatic mass ; retroperitoneal mass ; cholestasis ; obstructive jaundice
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Digestive diseases and sciences 40 (1995), S. 166-176 
    ISSN: 1573-2568
    Keywords: left atrial dilatation ; cardiomegaly ; mitral regurgitation ; mitral stenosis ; mitral valve ; aberrant left subclavian artery ; subclavian steal syndrome ; dysphagia, manometry ; esophageal motility
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The roentgenographic, echocardiographic, endoscopic, and manometric findings were studied in five consecutive patients with cardiovascular dysphagia, including four with a dilated left atrium and one with an anomalous left subclavian artery. Common and different manometric findings were found in the two types of cardiovascular dysphagia. The major manometric abnormality in all cases was an elevated baseline pressure, with superimposed large rhythmic pressure waves occurring at the same frequency as the electrocardiogram in the mid-esophagus. This manometric abnormality, produced by pulsatile cardiovascular compression, provides direct evidence that cardiovascular dysphagia is caused by esophageal luminal obstruction from cardiovascular compression. Indirect evidence supporting this mechanism includes smooth extrinsic compression and hang-up of ingested barium in the mid-esophagus on esophagogram and transmitted mural pulsations and a compressed lumen in the mid-esophagus at panendoscopy. Two of the five patients had deranged esophageal peristalsis within the high-pressure zone, which also contributed to the dysphagia. Autopsy in one patient with deranged peristalsis revealed a band of ischemic esophageal mucosa in the zone compressed by the dilated left atrium. A novel manometric maneuver might distinguish dysphagia due to an anomalous left subclavian artery from dysphagia due to a dilated left atrium. Left arm elevation during manometry in the single patient with the anomalous artery significantly increased the mean mid-esophageal baseline pressure by 92% (N=10 trials), and mean pressure wave amplitude by 93% (N=10 trials,P〈0.002 for each, nonparametric signed rank test). Left arm elevation in this patient also increased the observed luminal obstruction during endoscopy. These manometric and endoscopic findings may be explained by increased arterial compression of the esophagus produced by arterial stretch and anterior displacement with arm elevation.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1573-2568
    Keywords: pregnancy, parturition ; congenital anomalies ; teratology ; neonatology ; lower gastrointestinal bleeding ; flexible sigmoidoscopy ; colonoscopy ; gastrointestinal endoscopy ; endoscopic complications ; therapeutic endoscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Our objectives were to analyze the risks versus benefits of flexible sigmoidoscopy to the pregnant female and fetus. We retrospectively studied 24 consecutive pregnant patients admitted to four university hospitals during seven years who underwent 26 flexible sigmoidoscopies. Sigmoidoscopy indications included hematochezia in 11, diarrhea in 12, abdominal pain in 7, constipation in 2, and occult rectal bleeding in 1. Seven patients were in the first trimester of pregnancy, nine were in the second trimester, and eight were in the third trimester. Sigmoidoscopy provided helpful clinical information in all patients. Twelve patients had a lesion diagnosed by sigmoidoscopy, including reactivation of Crohn's colitis, reactivation of ulcerative colitis, infectious colitis, nonspecific colitis, bleeding internal hemorrhoids, pseudomembranous colitis, anastomotic ulcer, and newly diagnosed Crohn's colitis. In particular, nine of 11 patients with rectal bleeding had a lesion identified by sigmoidoscopy. No endoscopic complications occurred to any pregnant female. Two pregnant patients underwent repeat sigmoidoscopy without complications. Fetal outcome was ascertained in all but one pregnancy. Eighteen pregnant females delivered healthy infants (16 at full term, two at 35 or 36 weeks). Their mean Apgar scores were 8.8±0.4sd at 1 min, and 9.0±0.4sd at 5 min. One diabetic and hypertensive female suffered an involuntary abortion nine weeks after sigmoidoscopy, which appeared unrelated to the sigmoidoscopy. Four pregnancies were voluntarily aborted. This study suggests that flexible sigmoidoscopy does not induce labor or result in congenital malformations, that sigmoidoscopy is not contraindicated during pregnancy, and that sigmoidoscopy should be considered in medically stable pregnant patients with significant gastrointestinal bleeding. Sigmoidoscopy should be performed with maternal monitoring by electrocardiography and pulse oximetry and possibly with fetal monitoring, after obstetrical consultation and after stabilization of vital signs. Medical stabilization may require transfusion of blood products and supplemental oxygen administration.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Digestive diseases and sciences 39 (1994), S. 1359-1364 
    ISSN: 1573-2568
    Keywords: anticardiolipin antibodies ; ischemic bowel ; mesenteric thrombosis ; intestinal infarction ; thromboembolism ; gastrointestinal bleeding ; duodenal ulcer ; peptic ulcer ; lupus anticoagulant ; autoimmune disease
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Digestive diseases and sciences 36 (1991), S. 693-698 
    ISSN: 1573-2568
    Keywords: dysphagia ; left atrial dilatation ; cardiomegaly ; mitral regurgitation ; mitral stenosis ; mitral valve disease ; rheumatic heart disease ; manometry ; esophageal motility
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A 26-year-old male with left atrial dilatation because of severe mitral stenosis presented with dysphagia and weight loss. Esophagogastroduodenoscopy revealed transmitted mural pulsations occurring at the frequency of the peripheral pulse and a compressed lumen in the midesophagus. Esophageal manometry revealed in the midesophagus a high-pressure zone with normally transmitted peristaltic waves through this region. Superimposed on the elevated baseline pressure in this zone were cyclic pressure waves occurring one-for-one with the QRS complex of the electrocardiogram. The midesophageal high-pressure zone and cyclic pressure waves are explained by pulsatile compression by the left atrium. Proximal and distal to this zone, the baseline esophageal pressure was normal, with no pressure oscillations present. This is the first direct manometric evidence that this dysphagia is due to mechanical obstruction from extrinsic compression and not due to dysmotility from esophageal nerve compression and injury by the dilated left atrium. This mechanism was previously supported by indirect radiographic evidence.
    Type of Medium: Electronic Resource
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