7 results on '"Ricardo Álvarez-Santana"'
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2. La pandemia de investigación del 2020: Un análisis bibliométrico de las publicaciones sobre COVID-19 y su impacto científico durante los primeros meses
- Author
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Carlos E. Diéguez-Campa, Ivan Pérez-Neri, Gustavo Reyes-Terán, Iliana A. Flores-Apodaca, Jorge Castillo-Ledón-Pretelini, Omar Mercado-Bautista, Ricardo Álvarez-Santana, Marco A. Zenteno, Brigham Bowles, and Ángel Lee
- Subjects
COVID-19. SARS-CoV-2. Coronavirus. Pandemia. Bibliométrico. ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Antecedentes: La pandemia de COVID-19 ha desatado una avalancha de publicaciones, con diferentes fuentes y de impacto desigual. Consideramos que los primeros tres meses son cruciales para comprender cómo se ha generado el conocimiento mediante la realización de un análisis bibliométrico, incluyendo las citas a estos artículos para guiar a los investigadores en la exploración de este campo y evaluar la relación entre los casos confirmados de COVID-19, y las muertes con el número de artículos por país. Métodos: Realizamos un análisis del número de artículos de PubMed (enero-marzo) por país, enfoque, e impacto (citas de Scopus durante los primeros seis meses). Se implementó regresión lineal múltiple para analizar la correlación entre el número de publicaciones y los casos y muertes confirmados. Resultados: Se analizaron un total de 2,530 publicaciones con 59104 citas (23,4 citas/artículo), escritas por autores de 67 países. China fue el país con más publicaciones (988, 39%) y más citas (36,416, 63%), seguido de Estados Unidos con 423 artículos (16.7%) y 7,458 citas (12.6%). La red de coautoría identificó a 10,756 autores. Según el análisis multivariado, tanto los casos confirmados como las defunciones se correlacionaron significativamente con el número de publicaciones por país (corregido por el tamaño de la población y el producto interno bruto). Conclusión: La correlación sugiere que los casos y muertes tuvieron un impacto en la literatura médica, esto refleja la prontitud con que la comunidad científica ha estado en el frente de batalla contra COVID-19.
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- 2021
- Full Text
- View/download PDF
3. La pandemia de investigación del 2020: Un análisis bibliométrico de las publicaciones sobre COVID-19 y su impacto científico durante los primeros meses
- Author
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Marco Zenteno, Jorge Castillo-Ledón-Pretelini, Gustavo Reyes-Terán, Carlos Eduardo Diéguez-Campa, Iliana A Flores-Apodaca, Brigham Bowles, Ricardo Álvarez-Santana, Omar Mercado-Bautista, Iván Pérez-Neri, and Angel Lee
- Subjects
Bibliometric analysis ,Multivariate analysis ,Coronavirus disease 2019 (COVID-19) ,MEDLINE ,Scopus ,Gross domestic product ,03 medical and health sciences ,0302 clinical medicine ,Geography ,030228 respiratory system ,RC666-701 ,Pandemic ,Diseases of the circulatory (Cardiovascular) system ,030212 general & internal medicine ,Cardiology and Cardiovascular Medicine ,COVID-19. SARS-CoV-2. Coronavirus. Pandemia. Bibliométrico ,Demography ,Medical literature - Abstract
Background The outbreak of COVID-19 has created a landslide of publications, from different sources and unequal impact. We considered that the first 3 months are crucial to understand how knowledge has been generated by performing a bibliometric analysis, including the citations to these articles to guide researchers in exploring this field, and to evaluate the relationship between confirmed COVID-19 cases and deaths with the number of papers per country. Methods Scientific publications were obtained from PubMed (January-March 2020) and their citations during the first 6 months retrieved from the Scopus database. An analysis of the number of papers by country, approach (type and category of publication), and impact was made. A multiple linear regression model was implemented to analyze the correlation between the number of publications and confirmed cases and deaths. Results A total of 2,530 publications were analyzed with 59,104 citations (23.4 citations/article), written by authors from 67 countries. China was the country with more publications (988, 39%) and more citations (36,416, 63%) followed by the United States with 423 articles (16.7%) and 7,458 citations (12.6%). The coauthorship network identified 10,756 authors. According to the multivariate analysis, both confirmed cases and deaths were significantly correlated with the number of publications per country (corrected by population size and gross domestic product). Conclusion The correlation with the number of publications suggests that cases and deaths had some impact on the medical literature, reflecting how rapidly the scientific community has been on the frontline in the fight against COVID-19.
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- 2021
4. Cor triatriatum dexter associated to Ebstein anomaly with tricuspid double lesion and atrial septal defect
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Ricardo Álvarez-Santana, Jesus A. Garcia-Diaz, Mara Escudero-Salamanca, Roberto Cano-Zarate, and Nilda Espinola-Zavaleta
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congenital, hereditary, and neonatal diseases and abnormalities ,Echocardiography, Three-Dimensional ,Imagénes En Cardiología ,General Medicine ,Echocardiography, Doppler ,Heart Septal Defects, Atrial ,Ebstein Anomaly ,Young Adult ,Pulmonary Veins ,RC666-701 ,Cor Triatriatum ,cardiovascular system ,Diseases of the circulatory (Cardiovascular) system ,Humans ,Female ,cardiovascular diseases ,Magnetic Resonance Angiography - Abstract
Female 23-year-old patient with heart murmur diagnosed in the first year of life. She attended to our institute with progressive dyspnea and palpitations of 7-month evolution. Physical examination showed perioral and distal cyanosis with digital clubbing, oxygensaturation of 79%, jugular plethora, arrhythmic heartsounds of upper limbs, fixed second heart sound, systolic tricuspid murmur, and edema. Electrocardiogramand 24 hour Holter monitoring showed atrial fibrillationand right bundle branch block.
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- 2020
5. The 2020 research pandemic: A bibliometric analysis of publications on COVID-19 and their scientific impact during the first months
- Author
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Carlos E, Diéguez-Campa, Ivan, Pérez-Neri, Gustavo, Reyes-Terán, Iliana A, Flores-Apodaca, Jorge, Castillo-Ledón-Pretelini, Omar, Mercado-Bautista, Ricardo, Álvarez-Santana, Marco A, Zenteno, Brigham, Bowles, and Ángel, Lee
- Subjects
China ,Biomedical Research ,Databases, Factual ,Bibliometrics ,Publications ,COVID-19 ,Humans ,Pandemics ,United States - Abstract
The outbreak of COVID-19 has created a landslide of publications, from different sources and unequal impact. We considered that the first 3 months are crucial to understand how knowledge has been generated by performing a bibliometric analysis, including the citations to these articles to guide researchers in exploring this field, and to evaluate the relationship between confirmed COVID-19 cases and deaths with the number of papers per country.Scientific publications were obtained from PubMed (January-March 2020) and their citations during the first 6 months retrieved from the Scopus database. An analysis of the number of papers by country, approach (type and category of publication), and impact was made. A multiple linear regression model was implemented to analyze the correlation between the number of publications and confirmed cases and deaths.A total of 2,530 publications were analyzed with 59,104 citations (23.4 citations/article), written by authors from 67 countries. China was the country with more publications (988, 39%) and more citations (36,416, 63%) followed by the United States with 423 articles (16.7%) and 7,458 citations (12.6%). The coauthorship network identified 10,756 authors. According to the multivariate analysis, both confirmed cases and deaths were significantly correlated with the number of publications per country (corrected by population size and gross domestic product).The correlation with the number of publications suggests that cases and deaths had some impact on the medical literature, reflecting how rapidly the scientific community has been on the frontline in the fight against COVID-19.
- Published
- 2020
6. Right Heart Chambers Longitudinal Strain Provides Enhanced Diagnosis and Categorization in Patients With Pulmonary Hypertension
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Nilda Espinola-Zavaleta, Neftali Eduardo Antonio-Villa, Enrique C. Guerra, Navin C. Nanda, Lawrence Rudski, Ricardo Alvarez-Santana, Gyssele Camacho-Camacho, Alberto Aranda-Fraustro, Jorge Cossio-Aranda, Karina Zamora, Diego Oregel-Camacho, Javier Ivan Armenta-Moreno, Joaquin Berarducci, and Erick Alexanderson-Rosas
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echocardiography ,right ventricular free wall longitudinal strain ,right atrial global longitudinal strain ,pulmonary hypertension ,systolic pulmonary arterial pressure ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
BackgroundIncreased systolic pulmonary arterial pressure (sPAP) could lead to the mechanical dysfunction and myocardial fibrosis of the right heart chambers. Echocardiographic strain analysis has not been adequately studied in patients with pulmonary hypertension (PH).Study design and methodsA cross-sectional cohort of patients with suspected PH and echocardiographic strain evaluation was recruited. The cut-off values of peak tricuspid regurgitation velocity (TRV) with the low probability of PH (≤2.8 m/s), intermediate probability (2.9–3.4 m/s, without other echo PH signs), and high probability of PH (2.9–3.4 m/s with other echo PH signs and >3.4 m/s) categories were studied by right ventricular and right atrial (RA) strain analysis in a sample of 236 patients.ResultsThe results showed that 58 (56.9%) patients had low, 15 (14.7%) had intermediate, and 29 (28.4%) had a high probability of PH. We observed a negative association between right ventricular free wall strain (RV-FWS) and atrial global strain with sPAP. With the increase in PH severity, RA reservoir, conduit, and contraction (booster) strain values decreased. The identified cut-off values of strain parameters had an adequate ability to detect PH severity categories. In addition, the post-mortem biopsies of right heart chambers from subjects with known severe PH were analyzed to quantify myocardial fibrosis. Our sample of right heart biopsies (n = 12) demonstrated an association between increased sPAP before death and right ventricular and RA fibrosis.ConclusionMechanical dysfunction and fibrosis in the right chambers are associated with increased sPAP. Right ventricular and atrial strain could provide enhancement in the diagnosis and categorization of subjects with suspected PH.
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- 2022
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7. Multiple embolic strokes in primary antiphospholipid syndrome
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Jesus A. Garcia-Diaz, Ricardo Alvarez-Santana, Mara Escudero-Salamanca, Eulo Lupi-Herrera, and Nilda Espinola-Zavaleta
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Immunologic diseases. Allergy ,RC581-607 - Published
- 2020
- Full Text
- View/download PDF
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