Publications (9)2.73 Total impact
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ABSTRACT: Gastric emptying studies were begun in 1833. However, as information on this phenomenon became more available it became more difficult to unify studies in order to make them more applicable for the study and treatment of functional disturbances and organic diseases. In this work an innocuous, objective and precise method is described, that consists of the study of gastric emptying in two stages in healthy individuals. In the first, basic substances of food were administered and in the second, usual 1,050 calorie meals all marked with Technetium-99 m macroaggregates, were given. Two scintillation cameras were used coupled to computerized data processing systems from where quantitative information and black and white Polaroid pictures were obtained. In the first stage, six healthy volunteers were studied who received basic food substances in different sessions. In the second stage, 10 healthy volunteers were studied who received a type of meal common in our environment. In all cases gastric emptying curves were obtained plotting radioactivity counts v.s. time. Weibull's distribution was the statistical method applied. According to the ingested substances, results showed different emptying curves of a complex exponential type. Although gastric emptying is immediate, it is parallel to the presence of plateaus in the initial part of the study; an apparently delayed phenomenon that had been overlooked and is explained in the discussion part of this paper. Results obtained have offered the possibility of an abundant volume of studies that should clarify existing doubts in the future with a wide field for clinical application.Archivos de investigación médica 02/1980; 11(3):393-408.
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ABSTRACT: Entamoeba histolytica is a protozoan that is endemic in various parts of the world, including some areas of the United States. It may live in the large bowel in its cyst form without harming the host (commensalism) or, for as yet poorly understood reasons, invade the tissues as a trophozoite producing invasive amebiasis of the colon. In a review of over 3,000 cases of invasive amebiasis, the clinico-pathologic forms of the disease were: ulcerative rectocolitis (95%), typhloappendicitis (3%), ameboma (1.5%), and fulminating colitis and toxic megacolon (0.5%). Different radiographic patterns are seen in each clinical form with varying degrees of specificity. It is vitally important that this disease be included in the differential diagnosis of large bowel pathology even in nonendemic areas. Several referral patients who have received inappropriate therapy for inflammatory bowel disease with near disastrous results are seen at one of our institutions (Loyola) each year.American Journal of Roentgenology 07/1977; 128(6):935-41. DOI:10.2214/ajr.128.6.935 · 2.73 Impact Factor
- Archivos de investigación médica 02/1974; 5 SUPPL 2:541-8.
- Archivos de investigación médica 02/1973;
Article: [Review on chronic amebic colitis].Archivos de investigación médica 02/1973;
- Archivos de investigación médica 02/1971; 2(3):499-510.
- Archivos de investigación médica 02/1970; 1(supplement 6):Suppl:213-6.
Article: [Gastric emptying and stress].La Prensa médica mexicana 42(7-8):297-301.
- La Prensa médica mexicana 42(1-2):21-6.