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Query: UMLS:C0042961 (volvulus)
 4,305 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The findings on the radiographs of 14 cases of ileosigmoid knot are presented and analysed. The clinical features and pathology of the condition are briefly described. The key radiological features consist of a dilated loop of pelvic colon, evidence of small intestinal obstruction and retention of faeces in an undistended proximal colon. The dilated loop usually lies in the right side of the abdomen and the limbs taper inferiorly into the right lower quadrant. Medial deviation of the distal descending colon is an inconsistant but highly specific finding. The radiographs readily permit distinction from primary volvulus of the small intestine and from non-obstructive surgical emergencies such as perforated viscus and ruptured ectopic pregnancy. The combination of radiographic findings may however be simulated by volvulus of the right colon, closed loop small intestinal obstruction and by volvulus of the pelvic colon complicated by peritonitis. The differential diagnosis is discussed and the value of sigmoidoscopy, rather than barium enema, emphasised.
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PMID:The radiology of ileosigmoid knot. 63 62

Colonoscopy was employed to attempt detorsion of volvulus of the right colon in four patients considered to be high-risk surgical patients. In one patient detorsion was accomplished, so that emergency laparotomy became unneccesary. The site of torsion was reached in every patient. When detorsion does not occur reasonably soon after the colonoscope enters the right colon, persistent efforts are more likely to be harmful than helpful. Abdominal symptoms in a patient who has been ill or injured for some time should suggest the possibility of volvulus of the right colon. Early diagnosis and earlier employment of colonoscopy would almost surely result in an increased rate of success in accomplishing detorsion. When detorsion is accomplished, subsequent resection of the right colon should be seriously considered as, without it, volvulus is said to recur frequently.
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PMID:The colonoscope in cecal volvulus: report of three cases. 63 43

Of 16 dogs treated medically and surgically for gastric dilatation-volvulus, 11 developed electrocardiographic evidence of ventricular dysrhythmias. Seven of these dogs had ventricular dysrhythmias for the first time during their hospitalization after surgery. The ventricular dysrhythmias included ventricular premature depolarizations, slow ventricular rhythms, paroxysmal ventricular tachycardia, ventricular tachycardia, and multifocal ventricular tachycardia. Two of these dogs had electrocardiographic evidence of atrial premature depolarizations at the time of hospitalization. Treatment with lidocaine hydrochloride or procainamide hydrochloride was successful in reestablishing sinus rhythm in 9 of the 11 dogs with ventricular dysrhythmias.
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PMID:Cardiac dysrhythmias associated with gastric dilatation-volvulus in the dog. 64 Sep 31

Adult Onchocerca volvulus worms were extracted sequentially with buffers of various ionic strengths. The extract was incubated with purified human onchocerciasis immunoglobulin-G (IgG) convalently coupled to Sepharose. Antigens were then eluted with 8 M urea and 7.5 M guanidine-HCl. IgG contained in the eluates was removed by incubating the eluates with rabbit anti-human IgG covalently coupled to Sepharose. As demonstrated by double immunodiffusion and "double" crossed immunoelectrophoresis at least three antigens were isolated. Most of the antigens were totally excluded from Sephadex G-200 but entered the included volume of Sepharose 6B. In electrofocusing they focused in acid regions. Antibodies were generated in rabbits against the three antigens isolated together. The antibodies were covalently coupled to Sepharose, which was subsequently used as a new affinity medium for the isolation of antigens. Such isolated antigens appeared to be identical with those with human onchocerciasis IgG. The isolated antigens and their corresponding artificial antibodies generated in rabbits were successfully applied in the enzyme linked immunoadsorbent assay. Host material and onchocerciasis IgG left behind during the purification procedure interfered in the assay system.
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PMID:Sequential affinity chromatography for the purification of antigens extracted from Onchocerca volvulus adult worms. 64 58

Systematic lymphographic studies in 13 cases of infection with Onchocerca volvulus have enabled a "lymphographic diagram" to be made for each infected patient. The images obtained are similar to those observed in wuchereriasis. The microfilariae in onchocerciasis, however, are not transmitted in the lymphatic system, and the lesions, which vary according to the degree of infestation, show little progression. They are found mainly in the inguino-crural ganglia which are the first main ganglionic relay system for the lower limbs.
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PMID:[Results of lymphography in 13 cases of onchocerciasis]. 65 Jun 32

Eighty-eight patients with perforations of the gastrointestinal tract in infancy and childhood, excluding those caused by appendicitis, are presented. Fifty-five patients were four weeks of age or younger. Fourteen of the perforations occurred during the first year of life and 19 occurred between one and 15 years of age. The locations of perforations by order of frequency were the ileum, rectosigmoid, stomach and duodenum. The causes in order of frequency were necrotizing enterocolitis, ulcers, unknown causes, Hirschsprung's disease, atresia of the small intestine, volvulus, trauma, gastroschisis and ventriculoperitoneal shunts for hydrocephalus. A high index of suspicion, aided by roentgenograms, is essential for an early diagnosis. The over-all mortality was 49 of 88 patients. No reduction in mortality was observed in the last ten years, despite improved surgical techniques and better antimicrobial agents. Early recognition and rapid transport of the child to a pediatric intensive care unit with better supportive measures plus antimicrobial agents effective against both anaerobic and aerobis bacteria should reduce this high mortality.
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PMID:Perforation of the gastrointestinal tract in infancy and childhood. 65 71

Clinicopathological studies on lymph nodes of 32 Africans with onchocerciasis--some complicated by hanging groin and elephantiasis of the genitalia--revealed atrophic lymphoid tissue, lymphoedema, chronic inflammation and fibrosis. We identified microfilariae of Onchocerca volvulus in nodes of 24 of 32 Africans (75%). There microfilariae were most numerous in the capsule and in the fibrous tissue of the medulla, but smaller numbers were also found within lymphoid tissue, in dilated lymphatics and in blood vessels. We believe that in Africians, antigens released from microfilariae of O. volvulus lead to the deposition of immune complex in tissues, which in turn causes inflammation and fibrosis and eventually obstructive lymphadenitis. This causes hanging groin and, possibly, also elephantiasis. A distinctive pattern of perivascular fibrosis contains "fibrinoid material" that we interpret as immune complexes involving microfilarial antigens. In contrast, nodes from two Yemenites with severe onchocercal dermatitis of the lower limbs (sowda) had hyperplastic follicles, minimal fibrosis and no microfilariae.
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PMID:Onchocercal lymphadenitis: Clinicopathologic study of 34 patients. 65 85

Five cases presenting in late infancy and childhood with symptoms and signs referable to malrotation of the midgut are described. The condition may present with jaundice, malabsorption or the signs and symptoms of intestinal obstruction due to internal hernia or volvulus. It may also result in volvulus and gangrene of the midgut. A short root of the mesentery predisposing to this event will be seen on a barium meal and follow through examination and will warn of its impending occurrence.
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PMID:The misplaced caecum and the root of the mesentery. 65 37

The collective term "recurrent hiatus hernia" groups the pseudo-recurrent lesions after inappropriate surgery together with true recurrencies. An early recurrency can often be attributed to surgical technique, a late recurrency is usually biological in nature. The manifold pathophysiology of these cases is dominated by an intercurrent relux, dysphagia or paraoesophageal stomach volvulus. A decision to operate must, because of the important technical risks inherent, be made only after fully exhausting the conservative alternatives. The reoperation requires surgeon specially qualified for the task, with experience in thoraco-abdominal procedures. Approaches and alternative operating techniques are discussed with reference to personal experience from 56 cases.
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PMID:[Indications and tactics in recurrent hiatal hernia]. 65 50

The causes, pathology, and clinical features of thrombosis within the portal venous system are discussed. When thrombosis starts in the periphery of the mesentery the extent of infarction in the bowel may be limited and treatment by resection of the thrombosed mesentery and adjacent gut may be successful. When the thrombosis is proximal thrombectomy is essential. A case is described in which proximal mesenteric venous thrombosis occurred in assoication with volvulus of a common embryonic midgut mesentery. Laparotomy was performed and a thrombus 25 cm long extending into the portal vein successfully removed by catheter thrombectomy.
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PMID:Portal phlebothrombosis: the role of thrombectomy. 66 38


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