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1.
Rev. chil. cir ; 52(1): 49-54, feb. 2000. tab
Article in Spanish | LILACS | ID: lil-263655

ABSTRACT

Se evaluó mediante un estudio prospectivo la resistencia tensil de diferentes suturas que se emplean en los Servicios de Cirugía de Chile. Se determinó la resistencia tensil en kg/mm2, que es la fuerza necesaria para producir ruptura del nudo, mediante un tensiómetro digital con control micrométrico. Se utilizó anudado manual, siendo el primer nudo doble o de cirujano y después de 3 a 5 nudos simples. Ambos cabos de los hilos estaban sujetos en un extremo del tensiómetro y fueron atados finamente en sus extremos libres. Se hicieron entre 15 a 20 pruebas de ruptura para cada material. Se compararon los resultados de las pruebas realizadas en grupos del mismo calibre, tanto para suturas absorbibles como no absorbibles. Se determinaron los valores promedio y valores de desviación estándar, empleando el test de Mann Whitney o test de Wilcoxon en pruebas no paramétricas y no pareadas. Se tomó como significación estadística un p<0,05. Se pudo apreciar que entre los materiales absorbibles, el Glicomer 631 y el Lactomer 9-1 tuvieron la mayor resistencia tensil comparado con otros materiales. En un termino medio similar se ubicaron el Poliglecaprone, Polidioxanona y el Poligláctico 910. El material con menor resistencia tensil fue catgut cromado. Entre los 3 materiales no absorbibles, el poliester arrojó los mejores resultados en sus diferentes calibres. El Polypropileno es una sutura de tipo intermedio en cuanto a resistencia tensil. Los resultados del presente estudio permiten sugerir que existen diferencias en la resistencia tensil para materiales de sutura teóricamente similires, que deben de ser tomadas en cuenta al momento operatorio


Subject(s)
Humans , Sutures , Suture Techniques/instrumentation , Absorbable Implants , Catgut , Hospitals, Packaged , Polyesters/analysis , Polypropylenes/analysis
2.
Rev. méd. Chile ; 127(11): 1321-8, nov. 1999. tab
Article in Spanish | LILACS | ID: lil-257990

ABSTRACT

Background: the diagnosis of patients with short segments of intestinal metaplasia in the distal esophagus, has increased in recent years. Aim: to assess the clinical, pathological and functional features of patients with esophageal intestinal metaplasia. Patients and methods: a prospective study was performed in 95 control subjects, 115 patients with cardial intestinal metaplasia and 89 patients with short Barret esophagus with intestinal metaplasia. All had clinical and endoscopic assessments, esophageal manometry and determination of 24 h esophageal exposure to acid and duodenal content. Results: control patients were younger and, in this group, the pathological findings in the mucosa distal to the squamous-columnar change, showed a preponderance of fundic over cardial mucosa. In patients with intestinal metaplasia and short barret esophagus, there was only cardial mucosa, that is the place where intestinal metaplasia implants. Low grade dysplasia was only seen in the presence of intestinal metaplasia. Gastroesophageal sphincter pressure decreased and gastric and duodenal reflux increased along with increases in the extension of intestinal metaplasia. Conclusions: these findings confirm the need to obtain multiple biopsies from the squamous-columnar mucosal junction in all patients with gastroesophageal reflux symptoms, for the detection of early pathological changes of Barret esophagus and eventual dysplasia


Subject(s)
Humans , Intestinal Neoplasms/complications , Barrett Esophagus/complications , Gastroesophageal Reflux/complications , Bilirubin , Case-Control Studies , Prospective Studies , Endoscopy, Gastrointestinal , Gastrointestinal Contents , Intestinal Neoplasms/etiology , Barrett Esophagus/etiology , Gastroesophageal Reflux/diagnosis
3.
Rev. méd. Chile ; 127(8): 953-60, ago. 1999. ilus, tab
Article in Spanish | LILACS | ID: lil-253162

ABSTRACT

Background: morbidly obese subjects have a high incidence of complications. The poor results of dietary treatments, has prompted the search of new therapies for obesity and among these, surgical procedures. Aim: To report the long term results of horizontal gastroplasty with roux en Y anastomosis in morbidly obese subjects. Patients and methods: fifty patients with an initial body mass index of 41.3 ñ 6 kg/m2 have been subjected to a horizontal gastroplasty with roux en Y anastomosis. During the study period, surgical techniques were modified, reducing the gastric pouch size, adding a truncal vagotomy, cholecystectomy, and increasing the length of the roux en Y loop from 70 to 100 cm. Twenty five patients have been followed for two years. Results: There was no operative mortality and one patient had an anastomotic leak that required 35 days of hospitalization. During follow up, in one patient, the stapled suture line loosened. After two years of follow up, weight decreased from 112 ñ 19 to 77.2 ñ 14 kg. Conclusions: horizontal gastroplasty with roux en Y anastomosis achieved an adequate weight loss with a low rate of complications in this group of morbidly obese subjects


Subject(s)
Humans , Female , Male , Adolescent , Adult , Middle Aged , Anastomosis, Roux-en-Y , Gastroplasty , Obesity, Morbid/surgery , Anastomosis, Roux-en-Y/adverse effects , Gastroplasty/adverse effects , Follow-Up Studies , Treatment Outcome , Body Mass Index , Weight Loss
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