5 results on '"Catena, Andrés"'
Search Results
2. On the protective effect of resilience in patients with acute coronary syndrome
- Author
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Arrebola-Moreno, Antonio L., Garcia-Retamero, Rocio, Catena, Andrés, Marfil-Álvarez, Rafael, Melgares-Moreno, Rafael, and Ramírez-Hernández, José A.
- Published
- 2014
- Full Text
- View/download PDF
3. Capillaroscopy, microangiopathy, and HIV. Descriptive study of capillaroscopy findings in HIV positive patients
- Author
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Verdejo Muñoz, Guillermo, Gálvez Barrón, César, Gracia Tello, Borja, Gamarra Calvo, Sara, Sanjoaquín Conde, Isabel, Catena, Andrés, and Blanco Ramos, José Ramón
- Subjects
Heart diseases ,HIV-positive persons ,Persones seropositives ,Malalties del cor - Abstract
Fundamento: El objetivo de este estudio fue valorar la afectación microangiopática mediante capilaroscopia en pacientes infectados por el virus de la inmunodeficiencia humana (VIH). Apenas ha sido estudiada y podría constituir una herramienta de diagnóstico precoz de afectación cardiovascular en estos pacientes. Material y métodos: Estudio transversal que incluyó pacientes mayores de 18 años, diagnosticados de infección por VIH entre 2008 y 2018. Se recogieron variables demográficas (sexo, edad), analíticas (tiempo de infección, CD4, CD4/CD8, coinfección por otros virus), tratamiento antirretroviral y comorbilidades (tabaquismo, enolismo, hipertensión arterial, dislipemia, diabetes, cardiopatía). Se realizó una capilaroscopia y un análisis de sangre en el mismo acto. Las alteraciones capilaroscópicas evaluadas fueron: congestión, tortuosidades, hemorragias, dilataciones, pérdida capilar y megacapilares. Resultados: Se incluyeron 102 pacientes, 73,5% hombres, edad media 40 años (DE: 10) y tiempo medio de infección 4,5 años (DE: 3,1). Al diagnóstico, la media de CD4 fue 408 células/mm3 y la razón CD4/CD8 fue 0,4. El 14,7% presentaban coinfección por el virus de la hepatitis B, el 31,3% tabaquismo y el 13,7% enolismo. El 93,1% de pacientes mostró alguna alteración capilaroscópica. Se observaron, por orden de frecuencia, congestión (78,5%), tortuosidades (77,5%), hemorragias (13,8%), dilataciones (11,8%), pérdida capilar (5%) y megacapilares (1%). Las torutuosidades se asociaron a edad y tabaquismo, y las hemorragias a edad, CD4, tratamiento antirretroviral, e hipertensión. Conclusiones: Los pacientes con infección por VIH presentan una prevalencia importante de alteraciones capilaroscópicas, principalmente tortuosidades y congestión. Es la primera descripción de áreas de congestión como hallazgo capilaroscópico en este grupo de pacientes. Background: In this study, we aim to evaluate microangiopathy in HIV positive patients by using capillaroscopy. To date, few studies have been published on the topic. Capillaroscopy may be a tool for early diagnosis of cardiovascular involvement in this patient population. Methodology: Cross-sectional study with HIV positive patients >18 years. The enrolment period was set from January to June 2018. The following data were collected: demographic (sex, age), laboratory tests (duration of infection, CD4 cell count, CD4:CD8 ratio, coinfection with other viruses), antiretroviral treatment, dyslipidemia, and comorbidities (active smoking, alcoholism, high blood pressure, dyslipidaemia, diabetes, cardiopathy). The capillaroscopy and blood tests were performed simultaneously. The following alterations were evaluated in the capillaroscopy: congestion, tortuosity, haemorrhage, dilations, capillary loss, and presence of megacapillaries. Results: One hundred and two patients were included; 73.5% were male, mean age was 40 years (SD: 10), and mean duration of infection 4.5 years (SD 3.1). At diagnosis, mean CD4 cell count was 408/mm3 and CD4/CD8 ratio 0.4. A number of patients (14.7%) were coinfected with the hepatitis B virus; 31.3% were active smokers and 13.7% alcoholics. Capillaroscopy alterations were found in most study patients (93.1%): congestion (78.5%), tortuosity (77.5%), haemorrhage (13.8%), dilations (11.8%), capillary loss (5%), and megacapillaries (1%). Capillary tortuo-sity was associated with age and smoking; and haemorrhage with age, CD4, antiretroviral treatment, and hypertension. Conclusion: Prevalence of capillaroscopy alterations is high in HIV positive patients, particularly tortuosity and congestion. To the best of our knowledge, the later alteration has not been previously reported in this group of patients.
- Published
- 2022
4. EL PROCESAMIENTO DE COMPUESTOS ESTIMULARES EN JUICIOS DE CAUSALIDAD
- Author
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GARCÍA-RETAMERO, ROCÍO, RAMOS, MANUEL, and CATENA, ANDRÉS
- Subjects
human learning ,juicios de causalidad ,associative models of learning ,inductive models of learning ,Compound ,causality judgment ,aprendizaje humano ,modelos inductivos del aprendizaje ,Compuesto estimular ,modelos asociativos del aprendizaje - Abstract
Nuestra investigación se centra en el estudio del aprendizaje de relaciones causales en las que un compuesto estimular es una causa fiable de un efecto. En dos experimentos, hemos contrastado las predicciones derivadas de los Modelos Asociativos de Rescorla y Wagner (1972) y Pearce (1994), y los Modelos Inductivos de Cheng y Novick (1992) y Novick y Cheng (2004). En claro contraste con la investigación previa sobre este tema, en nuestros experimentos, hemos utilizado una tarea de juicios de causalidad en la que la información sobre la presencia/ausencia de las causas potenciales y el efecto se presentó mediante muestras o agrupaciones de casos. Los resultados ponen de manifiesto que los mecanismos de aprendizaje involucrados en el procesamiento de compuestos podrían ser de origen asociativo. Our research focuses on learning about causal relationships between events when a candidate cause is a compound integrated by several individual causes. In two experiments, we compared the predictions of the Associative Models of Rescorla and Wagner (1972) and Pearce (1994), the Inductive Models of Cheng and Novick (1992) and Novick and Cheng (2004). In contrast with previous research about this topic, in these experiments, a causality judgments task was used in which the information about the presence/absence of the causes and the effect was presented through small samples of cases. Our results showed that the learning mechanisms involved in compound cue processing could be associative in origin
- Published
- 2008
5. [Capillaroscopy, microangiopathy, and HIV. Descriptive study of capillaroscopy findings in HIV positive patients].
- Author
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Verdejo-Muñoz G, Gálvez-Barrón C, Gracia Tello B, Gamarra Calvo S, Sanjoaquín Conde I, Catena A, and Blanco Ramos JR
- Subjects
- Humans, Male, Adult, Female, Microscopic Angioscopy, Cross-Sectional Studies, Hypertension, Heart Diseases, HIV Infections complications
- Abstract
Background: In this study, we aim to evaluate microangiopathy in HIV positive patients by using capillaroscopy. To date, few studies have been published on the topic. Capillaroscopy may be a tool for early diagnosis of cardiovascular involvement in this patient population., Methodology: Cross-sectional study with HIV positive patients >18 years. The enrolment period was set from January to June 2018. The following data were collected: demographic (sex, age), laboratory tests (duration of infection, CD4 cell count, CD4:CD8 ratio, coinfection with other viruses), antiretroviral treatment, dyslipidemia, and comorbidities (active smoking, alcoholism, high blood pressure, dyslipidaemia, diabetes, cardiopathy). The capillaroscopy and blood tests were performed simultaneously. The following alterations were evaluated in the capillaroscopy: congestion, tortuosity, haemorrhage, dilations, capillary loss, and presence of megacapillaries., Results: One hundred and two patients were included; 73.5% were male, mean age was 40 years (SD: 10), and mean duration of infection 4.5 years (SD: 3.1). At diagnosis, mean CD4 cell count was 408/mm3 and CD4/CD8 ratio 0.4. A number of patients (14.7%) were coinfected with the hepatitis B virus; 31.3% were active smokers and 13.7% alcoholics. Capillaroscopy alterations were found in most study patients (93.1%): congestion (78.5%), tortuosity (77.5%), haemorrhage (13.8%), dilations (11.8%), capillary loss (5%), and megacapillaries (1%). Capillary tortuosity was associated with age and smoking; and haemorrhage with age, CD4, antiretroviral treatment, and hypertension., Conclusion: Prevalence of capillaroscopy alterations is high in HIV positive patients, particularly tortuosity and congestion. To the best of our knowledge, the later alteration has not been previously reported in this group of patients.
- Published
- 2022
- Full Text
- View/download PDF
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