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Search Results: 1 - 10 of 196388 matches for " Felipe Navia G "
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Evaluación de un test comercial de avidez de IgG: Aporte al diagnóstico de primoinfección por Toxoplasma gondii Evaluation of an IgG avidity commercial test: Contribution to diagnosis of primary infection caused by Toxoplasma gondii
Marilena Canales R,Felipe Navia G,Marisa Torres H,Mónica Concha C
Revista chilena de infectología , 2010,
Abstract: Introducción: Toxoplasmosis (T) es una infección parasitaria crónica importante en pacientes inmunocompro-metidos y mujeres embarazadas. Es relevante discriminar entre fase aguda (TA) y fase crónica (TC). Su diagnóstico es serológico en inmunocompetentes (detección de IgG e IgM). Objetivo: Evaluar la utilidad del test de avidez IgG (A-IgG) para identificar la fase aguda y o crónica. Avidez es la fuerza de afinidad entre una inmunoglobulina específica y el epítope de la proteína antigénica del agente infectante, afinidad que aumenta con el tiempo. Pacientes y Métodos: Se usó un test cualitativo que mide la avidez de IgG, discriminando las dos fases. A 35 pacientes con diagnóstico clínico de TA y o TC, se les realizó IgG, IgM e A-IgG en Equipo VIDAS . Resultados: Los pacientes con TA fueron positivos para IgM e IgG y presentaron avidez débil. Los 21 casos con TC 52% (n: 11) tuvieron IgM positivo y 100% (n: 21) tuvo IgG positiva con avidez fuerte. Discusión: Los resultados confirman que el test de A-IgG puede ser de gran utilidad en el diagnóstico de TA, concordancia: 100 % con test de referencia (IgM cualitativa + IgG cuantitativa). El resultado está disponible en menos de 24 hrs, pudiendo ser útil en el diagnóstico de TA en mujeres embarazadas. Introduction: Toxoplasmosis (T) is a major chronic parasitic infection in immunocompromised patients and pregnant women. It is important to discriminate between acute phase (AT) and chronic phase (CT). Diagnosis is serological in immunocompetent patients (concentration of IgG and IgM). Objective: To evaluate the utility of an IgG avidity test (A-IgG) to identify the acute and chronic stage. Avidity is the strength of affinity between a specific immunoglobulin and the protein antigenic epitope of the infecting agent, an affinity that increases over time. Patients and Methods: We used a qualitative kit that measures the avidity of IgG, discriminating the two phases. In 35 patients with clinical diagnosis of AT and/or CT, IgG, IgM and IgG A (VIDAS ) were performed. Results: Patients with AT were positive for IgM and IgG, but presented weak avidity. In the 21 cases with CT, 52% (n: 11) were IgM positive and 100% (n: 21) had positive IgG with strong avidity. Discussion: The results confirm that the test of A-IgG may be useful in the diagnosis of AT, and has 100% concordance with reference test (qualitative IgM + quantitative IgG). The result is available within 24 hrs, and may be useful in diagnosis of AT in pregnant women.
Conducta suicida en ni os y adolescentes ingresados en un hospital general: Análisis descriptivo Features of adolescents hospitalized for a suicide attempt in a general hospital
Carla Inzunza C,Felipe Navia G,Pamela Catalán,Carla Brehme
Revista médica de Chile , 2012,
Abstract: Background: Worldwide, suicide is the third cause of death among adolescents. Aim: To determine the socio-demographic context and clinical characteristics of children and adolescents hospitalized for suicidal behavior in a general hospital. Material and Methods: Between 2007 and 2009, we evaluated 47 patients with a mean age of 15.3 years (87% women) admitted for suicidal behavior at the Clinical Hospital of the Catholic University of Chile. Demographic data of the participants were registered. Clinical interviews were done by a child and adolescent psychiatrist. Results: Fifty seven percent of patients lived with both parents. Fifty one percent had previous suicide attempts and 68% had a previous psychiatric treatment. The main trigger was a conflict with parents in 66%. The psychiatric diagnoses were major depressive episode in 74.5% and pathological development of personality in 43%. All suicide attempts were with drugs and 6.4% were associated with cuts. Seventeen percent of attempts were classified as medically serious and they were more common in older age groups. Non severe attempts were observed mainly in women (92.3%). Acetaminophen intake was recorded in 8.5% of cases. Admission to hospital increased in the final quarter of the year. High costs of hospitalization were observed associated to stays in high complexity units. Conclusions: The population studied shows a high incidence of prior suicidal behavior. Most of the studied patients had attempts that were not classified as serious. These occurred predominantly in women in all age ranges. Medically serious suicidal behavior is mainly observed in older adolescents.
Da o moral, da o fisiológico y da o a la vida de relación en Colombia
Felipe Navia Arroyo
Revista de Derecho Privado , 2007,
Abstract:
Consentimiento informado y responsabilidad civil médica
Felipe Navia Arroyo
Revista de Derecho Privado , 2006,
Abstract:
La responsabilidad extracontractual del Estado a la luz del artículo 90 de la Constitución Política
Felipe Navia Arroyo
Revista de Derecho Privado , 2000,
Abstract:
La terminación unilateral del contrato de derecho privado
Felipe Navia Arroyo
Revista de Derecho Privado , 2008,
Abstract:
Las obligaciones naturales en el código de Bello
Felipe Navia Arroyo
Revista de Derecho Privado , 2009,
Abstract: El presente artículo pretende demostrar que en el código de Bello el simple deber moral o de conciencia no es fuente de obligaciones naturales, dado que la concepción que sobre éstas recogió dicho texto se corresponde, en realidad, con la que de ellas se tenía en el derecho romano clásico, que veía este tipo de obligaciones allí donde hubo o pudo haber una obligación civil, y cuyo origen estuvo generalmente constituido por un negocio jurídico; y no, en cambio, con la amplia concepción justinianea que luego se tendría sobre tales obligaciones que, en efecto, partía de la base de que el cumplimiento de algunos deberes morales o de conciencia constituye el pago de una obligación natural. En la consecución de tal propósito, se explicará, en una primera parte, la influencia que tuvo la particular posición de Pothier en la consagración de la normativa relativa a la materia (artículos 1470 del Código Civil chileno y 1527 del colombiano) –dado que a ella remite Bello como fuente de inspiración– y, luego, en una segunda parte, se analizarán las hipótesis de obligación natural previstas en el Código y su respectivo régimen jurídico, a fin de corroborar la aseveración hecha en la parte precedente.
Evaluación de un test comercial de avidez de IgG: Aporte al diagnóstico de primoinfección por Toxoplasma gondii
Canales R,Marilena; Navia G,Felipe; Torres H,Marisa; Concha C,Mónica; Guzmán D,Ana M; Pérez C,Carlos; García C,Patricia;
Revista chilena de infectología , 2010, DOI: 10.4067/S0716-10182010000700002
Abstract: introduction: toxoplasmosis (t) is a major chronic parasitic infection in immunocompromised patients and pregnant women. it is important to discriminate between acute phase (at) and chronic phase (ct). diagnosis is serological in immunocompetent patients (concentration of igg and igm). objective: to evaluate the utility of an igg avidity test (a-igg) to identify the acute and chronic stage. avidity is the strength of affinity between a specific immunoglobulin and the protein antigenic epitope of the infecting agent, an affinity that increases over time. patients and methods: we used a qualitative kit that measures the avidity of igg, discriminating the two phases. in 35 patients with clinical diagnosis of at and/or ct, igg, igm and igg a (vidas?) were performed. results: patients with at were positive for igm and igg, but presented weak avidity. in the 21 cases with ct, 52% (n: 11) were igm positive and 100% (n: 21) had positive igg with strong avidity. discussion: the results confirm that the test of a-igg may be useful in the diagnosis of at, and has 100% concordance with reference test (qualitative igm + quantitative igg). the result is available within 24 hrs, and may be useful in diagnosis of at in pregnant women.
Prevalence of deaths by suicide in the city of Constitution (Chile) between the years 2001-2011
Ricardo Moreno Pascual,Felipe Antonio Navia González
Medwave , 2012,
Abstract: Currently, Chile has a suicide rate of 18.5 and 3.2 deaths for men and women, respectively, per 100,000 inhabitants. In this cumulative prevalence study we reviewed all autopsies performed at the Forensic Service of Constitución city in which the cause of death was suicide, in order to describe their evolution between 2001 and 2011. We recorded information about methods of suicide, age, gender, temporality, urban or rural, marital status, and toxicology. Data were analyzed using descriptive statistics. The method by hanging was the most prevalent, accounting for 83.3% of suicides, occurring most often in the years 2007, 2008 and 2011, and showing increased seasonality in March, October, November and December, preferably in the 13 to 22 year-old age group and in unmarried men. Only 44.55% was associated with alcohol consumption. Hanging is still the most common method of suicide, and coincides with the global trend of child and adolescent suicide. The periods of greatest frequency coincide with brighter days, spring or holidays, in which mood disorders tend to increase. Interestingly, no significant relationship with alcohol intake was found, whereas the literature reports a strong relationship with suicide. It is noteworthy that after the earthquake-tsunami of February 2010, there was no significant increase in suicide rates. Overall, the data show a trend consistent with the rest of the country (Chile); however, Constitución deviates somewhat, possibly due to population-specific characteristics.
Condicionamento osmótico em sementes de cebola: I. efeitos sobre a germina??o
Trigo, Maria Fernanda Otero Otumuro;Nedel, Jorge Luiz;Trigo, Luis Felipe Navia;
Scientia Agricola , 1999, DOI: 10.1590/S0103-90161999000500007
Abstract: onion seed lots (varieties aurora and petrolini) of different vigor levels, were osmoconditioned using aerated aqueous solutions of kno3 and peg at 20°c. in addition three soaking times (0, 24 and 48 hours) were evaluated. following each treatment, seeds were dried in an oven at 30°c until they reached initial moisture levels. then seeds were divided into two portions. one batch was stored in a dessecador for six months, while the other was immediately evaluated. results showed that the rate of germination and germination under stress conditions increased in osmoconditioned onion seeds. treatment with kno3 for 24 hours presented the best performance. osmotic conditioning may reverse the process of natural aging of onion seeds. osmoconditioned onion seeds maintained their physiologic quality up to six months of storage.
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