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J Elizondo Rivera

Publications and source records attributed to J Elizondo Rivera.

11 recordsLinked to original sources
PubMedDate not supplied

[Usefulness of the 14C-urea marked test in the detection of Helicobacter pylori in patients with dyspepsia].

This study was undertaken to evaluate the usefulness of the urea test (UT) in the detection of Helicobacter pylori (HP) in dyspeptic patients. The UT was done in 105 patients with dyspepsia who underwent endoscopy and biopsy. Hematoxylin-eosin and Warthin Starry tissue stains were performed for HP detection, and the resulting microscopic findings were considered as the gold standard. The sensitivity, specificity, and positive and negative predictive values of the UT were of 95%, 63%, 85% and 83% when compared to the hematoxylin-eosin stain-related findings, and 99%, 79%, 93% and 96% when compared to those related to the Warthin Starry stain. We conclude that the UT is a simple, non-invasive and useful diagnostic alternative to detect HP in patients with dyspepsia.

Adult↗
PubMedDate not supplied

[Emergency endoscopic sclerosis in esophageal varices].

In 52 patients we performed endoscopic sclerotherapy during active bleeding with good results in stopping hemorrhage in 93%. Most patients were Child "C" (66%) and postnecrotic cirrhosis was the commonest etiology (50%). Major complications were pleural effusion (2%) and mediastinal inflammation (2%), no mortality was found directly by this method. Conclusions are that endoscopic sclerosis of variceal hemorrhage have a special role in stopping bleeding but has no effect in one year survival.

Emergencies↗
PubMedDate not supplied

[Esophageal candidiasis in AIDS. Clinical, endoscopic, and histopathologic analysis of 19 cases].

From May 1988 to December 1989, fiberoptic endoscopy of the upper digestive tract was performed in 53 patients with AIDS. In 19 cases a presumptive diagnosis of candida esophagitis was made: 13 were men and six women; the median age was 38.9 years. The Kodsi grading scale was used to evaluate the extent of the fungal colonization. In five patients no symptoms were found, eight did not show oral candidiasis; dysphagia in seven cases and odynophagia in five cases were the main esophageal complaints. Eleven cases showed pan-esophagitis, but three cases showed only the distal portion involvement. Grade II lesions were observed in ten patients, and four had grades I or III. No correlation was found between the symptoms and the grade score. Direct brushing cytology of the esophageal lesions corroborated the endoscopic diagnosis. Association with other opportunistic infections were detected only in one case. Our findings corroborates the usefulness of the fiberoptic esophageal endoscopy to improve the diagnosis of AIDS-related esophageal candidiasis in patients without symptoms or oral lesions.

Acquired Immunodeficiency Syndrome↗
PubMedDate not supplied

[Gastric polyps. Experience at the department of endoscopy of the Salvador Zubirán National Institute of Nutrition].

During 1981-1989 we seen 54 patients with gastric polyps in the Instituto Nacional de la Nutrición SZ, Endoscopy Dept., México City. We found 100 polyps among 15,974 upper endoscopy studies (0.33%), being multiple in 22 patients with an overall of 68 polyps. Females had a predominance of 2:1 with prevalence from the 5th to 8th decades. All were asymptomatic in regard to polyps. Its main locations were in antrum (46%) and corpus (39%). They measured an average of 8 mm with a range from 5 to 25. Only three adenomatous polyps shows dysplastic changes, two with moderate dysplasia and one, bigger than 20 mm, had severe dysplasia (carcinoma in situ). Histological findings were: Inflammatory (chronic gastritis) 30%, adenomatous 22%, hyperplastic 17% and hamartomatous 13%. In seven patients we seen recurrence at follow up.

Adolescent↗
PubMedDate not supplied

[Panendoscopy].

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Dyspepsia↗
PubMedDate not supplied

[Optimization of the tagged urea test for the detection of H. pylori in patients with dyspepsia].

Helicobacter pylori (Hp) has been associated to gastritis, peptic ulcer, gastric cancer, and other gastrointestinal disorders. The 14C-urea breath test (UBT) has been proposed as a simple and noninvasive method for its detection, and has recently been implemented in our institution. To optimize our resources, we performed a sensitivity analysis to determine the minimal sampling and duration of testing required, and to establish objective criteria for its interpretation. With this purpose, endoscopy, antral biopsy and UBT were performed in 104 dyspeptic patients. For the UBT, a basal breath sample was taken before the administration of 10 microCi of 14C-urea and followed by sequential breath sampling at 5, 15, 30 and 60 minutes. Considering histologic findings as the gold standard, receiver operating characteristic (ROC) curves were constructed for the following three 14CO2 excretion strategies: excretion by sample, maximum excretion, and cumulative excretion. Hp was detected in 74 (71%) of the patients, and its presence coincided with significantly higher 14CO2 excretion than in the Hp negative (p < 0.001). The three excretion strategies were comparable in terms of diagnostic accuracy, but the most efficient results were given by the 15 minute sample. With a cut-off point of > or = 1.7%, the sensitivity and specificity of this sample was > or = 83%, the positive and negative predictive values were 93% and 68%, and the accuracy was 84%. We conclude that UBT can be completed with a single breath sampling at 15 min, and its results objectively interpreted as positive if the 14CO2 excretion is > or = 1.7%.

Biopsy↗