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Search Results: 1 - 10 of 74072 matches for " Carlos Alberto; Ruiz "
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Paracoccidioidoma medular
Betancur,Carlos Alberto; Ruiz,Carlos;
Acta Medica Colombiana , 2010,
Abstract: the case is reported of a 51-year-old patient with a three-month history of paraparesia that had rendered him unable to walk over a period of 45 days. the patient underwent surgical excision of 2 granulomas that had been shown by an mri scan. histopathological study with silver methenamine showed budding blastoconidia, typical of paraccoccidioides brasiliensis infection (acta med colomb 2010; 35: 183-184).
Paracoccidioidoma medular Medullary paraccoccidioidoma
Carlos Alberto Betancur,Carlos Ruiz
Acta Medica Colombiana , 2010,
Abstract: Paciente de 51 a os con paraperesia de tres meses de evolución, en la RMN de médula espinal se le demostraron dos granulomas que se resecaron y el informe histopatológico con coloración de plata metenamina demostró blastoconidias en gemación típicas de Paracoccidioides brasilensis (Acta Med Colomb 2010; 35: 183-184). The case is reported of a 51-year-old patient with a three-month history of paraparesia that had rendered him unable to walk over a period of 45 days. The patient underwent surgical excision of 2 granulomas that had been shown by an MRI scan. Histopathological study with silver methenamine showed budding blastoconidia, typical of Paraccoccidioides brasiliensis infection (Acta Med Colomb 2010; 35: 183-184).
Una nueva construcción de conjuntos Bh modulares
Carlos Alexis Gómez Ruiz,Carlos Alberto Trujillo Solarte
Matemáticas : Ense?anza Universitaria , 2011,
Abstract: Desde la aparición de los conjuntos Bh con el estudio de los conjuntos de Sidon en el análisis de Fourier finito (1932), se conocen tres construcciones clásicas en los enteros modulares con módulos específicos aportadas por J. Singer (1938), R. C. Bose y S. Chowla (1962), e I. Z. Ruzsa (1993). En este artículo se presenta una nueva construcción de conjuntos Bh en enteros modulares, la cual puede verse como una extensión de la construcción de Ruzsa.
Prevalencia y factores de riesgo para el pterigium en la población de "Hebi": Henan provincia, China 2009
Moreno Domínguez,José Carlos; Perea Ruiz,Carlos Alberto; Suárez Herrera,Fructuoso; Sanfeliz Yebra,Natacha;
Revista de Ciencias M??dicas de Pinar del R?-o , 2011,
Abstract: objective: to describe clinical and epidemiological characteristics of pterygium to favor the strategies to control the causes of the disease in henan province, people's republic of china. method: an observational, descriptive and cross-sectional research was carried out having a target group of 3940 patients with a presumptive diagnosis of pterygium in an active screening "house to house" during april 2008 to january 2009 taking a sample of 415 patients attending to "hebi" hospital. results: female sex (53%), the age bracket of 31-50 years old and farmers prevailed in the study. pterygium of degree ii, primary and active, having nasal location and fleshy type was predominant. lachrymal film affected the 57, 5% of the cases in study and 55,9% presented corneal affection. conclusions: a strong connection was found among lachrymal hyposecretion, corneal alterations and the presence of pterygium depending on the degree of ailment; which will allow establishing personalized protocols in the conduct to be followed for each patient who suffers the disease.
Auto injerto conjuntival con células límbicas en el tratamiento del pterigión, China 2009
Moreno Domínguez,José Carlos; Perea Ruiz,Carlos Alberto; Suárez Herrera,Fructuoso; Sanfeliz Yebra,Natacha;
Revista de Ciencias M??dicas de Pinar del R?-o , 2011,
Abstract: objective: to assess the procedure of conjuntival autograft with limbic cells to treat primary pterygium in the residents of henan province, people's republic of china. method: an applied, descriptive and cross-sectional research was conducted having a target group of 235 chinese patients from january to december 2009; the sample was comprised of 132 who were operated on pterygium. results: the mean age of patients was 48.58±14, 32 and 57.5% were men. recurrence and complications were present in 8 cases (6.06%). the level of satisfaction was good in the 80% of cases. conclusions: conjuntival autograft with limbic cells is a very useful procedure to treat pterygium in chinese population.
Biopsia cerebral a mano alzada guiada por tomografía Cerebral biopsy by a handfree procedure
Carlos Alberto Ruiz Casta?o,Héctor Jaramillo,Juan Carlos Arango
Iatreia , 1998,
Abstract: Se presenta la experiencia del Servicio de Neurocirugía del Hospital Universitario San Vicente de Paúl con un procedimiento alternativo para realizar una biopsia cerebral, el cual se lleva a cabo a mano alzada y guiado por tomografía sin utilizar un marco estereotáxico. Se resalta su utilidad en los casos de lesiones supratentoriales y con tama o mayor de 3 centímetros, en centros donde no se disponga de los métodos estereotáxicos tradicionales. We report the experience at the Neurosurgery Service, Saint Vincent's University Hospital (Medellín, Colombia) with a hand free procedure for performing brain biopsies, without stereotactical frames. It is considered useful in supratentorial lesions larger than 3 cm, in places lacking stereotactical technology.
Auto injerto conjuntival con células límbicas en el tratamiento del pterigión, China 2009 Conjuntival autograft with limbic cells to treat pterygium, China 2009
José Carlos Moreno Domínguez,Carlos Alberto Perea Ruiz,Fructuoso Suárez Herrera,Natacha Sanfeliz Yebra
Revista de Ciencias M??dicas de Pinar del R?-o , 2011,
Abstract: Objetivo: Evaluar la técnica del auto injerto de conjuntiva con las células límbicas en el tratamiento del pterigion primario en los pobladores de la provincia de Henan, Republica Popular de China. Método: se realizó una investigación aplicada, descriptiva y transversal, teniendo como universo a 235 pacientes chinos, en el período de enero a diciembre de 2009; se tomaron como muestra 132 de ellos, que fueron intervenidos de pterigium. Resultados: la edad media de los pacientes fue de 48,58 ± 14,32 a os, siendo hombres el 57.5 %. El número de recidivas como complicaciones fue de solo 8 casos (6.06 %). El nivel de satisfacción de los pacientes fue óptimo en el 80 % de los casos. Conclusiones: el autotransplante libre de conjuntiva con las células límbicas es una técnica muy útil en el tratamiento del pterigium en la población china. Objective: to assess the procedure of conjuntival autograft with limbic cells to treat primary pterygium in the residents of Henan province, People's Republic of China. Method: an applied, descriptive and cross-sectional research was conducted having a target group of 235 Chinese patients from January to December 2009; the sample was comprised of 132 who were operated on pterygium. Results: the mean age of patients was 48.58±14, 32 and 57.5% were men. Recurrence and complications were present in 8 cases (6.06%). The level of satisfaction was good in the 80% of cases. Conclusions: conjuntival autograft with limbic cells is a very useful procedure to treat pterygium in Chinese population.
Prevalencia y factores de riesgo para el pterigium en la población de "Hebi": Henan provincia, China 2009 Prevalence and risk factors for pterygium in the population of "Hebi" Henan province, China 2009
José Carlos Moreno Domínguez,Carlos Alberto Perea Ruiz,Fructuoso Suárez Herrera,Natacha Sanfeliz Yebra
Revista de Ciencias M??dicas de Pinar del R?-o , 2011,
Abstract: Objetivo: Describir las características clínicas y los factores epidemiológicos del pterigium y propiciar las estrategias que permitan el control de estas causas en los pobladores de la provincia de Henan, República Popular de China. Método: se realizó una investigación observacional, descriptiva y transversal, teniendo como universo a 3940 pacientes con un diagnóstico presuntivo de pterigium en el pesquisaje activo casa a casa, en el período abril de 2008 a enero de 2009, de los cuales se tomaron como muestra 415, que acudieron a la consulta de evaluación en el Hospital de Hebi. Resultados: el sexo femenino con el 53%, el grupo de edades entre 31 y 50 a os y los campesinos predominaron en el estudio. El grado II, primario y activo, la localización nasal y el tipo carnoso fueron preponderantes. El film lagrimal se afectó en el 57,5% de los casos estudiados con una afectación de la córnea en el 55,9%. Conclusiones: se encontró una fuerte conexión entre la hiposecreción lagrimal, alteraciones corneales y la presencia de pterigium en dependencia del grado de la dolencia, que permitirá establecer protocolos personalizados en la conducta para cada paciente que tenga esta enfermedad. Objective: to describe clinical and epidemiological characteristics of pterygium to favor the strategies to control the causes of the disease in Henan province, People's Republic of China. Method: an observational, descriptive and cross-sectional research was carried out having a target group of 3940 patients with a presumptive diagnosis of pterygium in an active screening "house to house" during April 2008 to January 2009 taking a sample of 415 patients attending to "Hebi" Hospital. Results: female sex (53%), the age bracket of 31-50 years old and farmers prevailed in the study. Pterygium of degree II, primary and active, having nasal location and fleshy type was predominant. Lachrymal film affected the 57, 5% of the cases in study and 55,9% presented corneal affection. Conclusions: a strong connection was found among lachrymal hyposecretion, corneal alterations and the presence of pterygium depending on the degree of ailment; which will allow establishing personalized protocols in the conduct to be followed for each patient who suffers the disease.
Resistencia antibiótica del Helicobacter pylori en el HospitalUniversitario San Ignacio de Bogotá
Yepes,Carlos Augusto; Rodríguez Varón,Alberto; Ruiz Morales,álvaro; Ariza,Beatriz;
Acta Medica Colombiana , 2008,
Abstract: objectives: to determine the frequency of resistance of helicobacter pylori (h. pylori) to amoxicillin, clarithromycin, tetracyclin and metronidazole at the san ignacio university hospital in bogotá, and to look for correlation between the presence of resistance and previous antibiotic use. material and methods: samples for h. pylori cultures were taken from 115 patients who underwent endoscopy because of dyspeptic symptoms. resistance to antibiotics was determined by means of susceptibility discs. information was collected on previous antibiotic and imidazole intake, and associations with resistance evaluated by means of contingency tables and fischer? s exact test. results: 84 positive cultures for h. pylori were obtained. resistance to metronidazole was found in 97,6% of cultures, followed by resistance to tetracycline (85,7%), to clarithromycin (63,1%) and to amoxicillin (9,5%). no relationship was found between previous use of antibiotics or imidazoles and the resistance to studied antibiotics. no associations were found between antibiotic resistance and other variables like age, sex or endoscopic findings. there was an increased probability of resistance to clarithromycin if there was also resistance to tetracycline (rr 4.25, ic 1.18-15.19 p= 0.001). conclusions: resistances of h. pylori to metronidazol and to tetracycline are above 85%, and to clarithromycin above 60% in the studied population. history of previous intake of antibiotics does not increase the probability of resistance. since these antibiotics are amongst the most widely used for eradication of h. pylori, the clinical impact of these findings in the effectiveness of eradication regimens must be evaluated with clinical trials.
Arreglo espacial de híbridos de maíz, índice de área foliar y rendimiento
Tinoco Alfaro, Carlos Alberto;Ramírez Fonseca, Alfonso;Villarreal Farías, Everardo;Ruiz Corral, Ariel;
Agricultura técnica en México , 2008,
Abstract: in the south of veracruz 250 000 hectares of maize with a potential yield of 9 t ha-1 are cultivated; nevertheless, the regional average it does not surpass 2 t ha-1. population density and the spatial arrangement of plants are factors that limit the production of maize, both of them generate losses of yield of 3.5 t ha-1. with the objective of generating information that minimize the yield loss due to these factors, study was carried out to evaluate yield and the leaf area index (lai), based on spacial arrangement of plantas and densities of population in two maize hybrids. with lai and yield data, a model was generated to predict yield. the study was carried out in acayucan, veracruz, from 1999-2001, under a complete randomized blocks design arranged into split plots, planting two hybrids in large plots, three distances among rows in medium plots and three distances among plants into small plots. statistical significance was observed for distances among rows and plants, as well as for the interaction between hybrids and separation among plants. the best distance among rows was of 70 cm; whereas for the distance among plants the optimal ones were 20 and 40 cm. the analysis of lai on the yield generated a linear regression for each of the three years, with regression coefficients of 0.61, 0.64 and 0.72, with acceptable correlation and determination coefficients.
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