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Autor Sergio Álvarez Vallejo
Comentario :
Jefe Departamento de Radiología, Imágenes Diagnósticas y Terapia Asistida por Imágenes, Hospital Pablo Tobón Uribe
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Documentos disponibles escritos por este autor (19)
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Pilot study evaluating the safety of a combined central venous catheter and inferior vena cava filter in critically ill patients at high risk of pulmonary embolism / Carlos Alberto Cadavid Gutiérrez ; Sergio Álvarez Vallejo ; Álvaro Humberto Restrepo Cuartas
Título : Pilot study evaluating the safety of a combined central venous catheter and inferior vena cava filter in critically ill patients at high risk of pulmonary embolism Tipo de documento : documento electrónico Autores : Carlos Alberto Cadavid Gutiérrez, ; Sergio Álvarez Vallejo, ; Álvaro Humberto Restrepo Cuartas, Fecha de publicación : 2013 Títulos uniformes : Journal of Vascular Interventional Radiology Idioma : Inglés (eng) Resumen : The objectives of this pilot trial were to assess the safety of a new device for pulmonary embolism (PE) prophylaxis. The device, the Angel Catheter, was placed in eight patients who were in the intensive care unit and were at high risk of PE. The device was inserted at the bedside without fluoroscopic guidance via a femoral venous approach. All eight devices were inserted and subsequently retrieved without complications (follow-up, 33-36 d). One filter trapped a large clot. Mención de responsabilidad : Carlos A Cadavid, Bladimir Gil, Alvaro Restrepo, Sergio Alvarez, Santiago Echeverry, Luis F Angel, Victor Tapson, John Kaufman Referencia : J Vasc Interv Radiol. 2013 Apr;24(4):581-5. DOI (Digital Object Identifier) : 10.1016/j.jvir.2012.12.011 PMID : 23522160 En línea : https://linkinghub.elsevier.com/retrieve/pii/S1051-0443(12)01289-4 Enlace permanente : https://hospitalpablotobon.cloudbiteca.com/pmb/opac_css/index.php?lvl=notice_display&id=3669 Pilot study evaluating the safety of a combined central venous catheter and inferior vena cava filter in critically ill patients at high risk of pulmonary embolism [documento electrónico] / Carlos Alberto Cadavid Gutiérrez, ; Sergio Álvarez Vallejo, ; Álvaro Humberto Restrepo Cuartas, . - 2013.
Obra : Journal of Vascular Interventional Radiology
Idioma : Inglés (eng)
Resumen : The objectives of this pilot trial were to assess the safety of a new device for pulmonary embolism (PE) prophylaxis. The device, the Angel Catheter, was placed in eight patients who were in the intensive care unit and were at high risk of PE. The device was inserted at the bedside without fluoroscopic guidance via a femoral venous approach. All eight devices were inserted and subsequently retrieved without complications (follow-up, 33-36 d). One filter trapped a large clot. Mención de responsabilidad : Carlos A Cadavid, Bladimir Gil, Alvaro Restrepo, Sergio Alvarez, Santiago Echeverry, Luis F Angel, Victor Tapson, John Kaufman Referencia : J Vasc Interv Radiol. 2013 Apr;24(4):581-5. DOI (Digital Object Identifier) : 10.1016/j.jvir.2012.12.011 PMID : 23522160 En línea : https://linkinghub.elsevier.com/retrieve/pii/S1051-0443(12)01289-4 Enlace permanente : https://hospitalpablotobon.cloudbiteca.com/pmb/opac_css/index.php?lvl=notice_display&id=3669 Reserva
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Código de barras Número de Ubicación Tipo de medio Ubicación Sección Estado DD000242 AC-2013-010 Archivo digital Producción Científica Artículos científicos Disponible Brain imaging and fluid biomarker analysis in young adults at genetic risk for autosomal dominant Alzheimer's disease in the presenilin 1 E280A kindred: a case-control study / Sergio Álvarez Vallejo ; Andrés Ignacio Arbeláez Medina
Título : Brain imaging and fluid biomarker analysis in young adults at genetic risk for autosomal dominant Alzheimer's disease in the presenilin 1 E280A kindred: a case-control study Tipo de documento : documento electrónico Autores : Sergio Álvarez Vallejo, ; Andrés Ignacio Arbeláez Medina, Fecha de publicación : 2012 Títulos uniformes : The Lancet Neurology Idioma : Inglés (eng) Resumen : Background: We have previously characterised functional brain abnormalities in young adults at genetic risk for lateonset Alzheimer’s disease. To gain further knowledge on the preclinical phase of Alzheimer’s disease, we sought to characterise structural and functional MRI, CSF, and plasma biomarkers in a cohort of young adults carrying a high-penetrance autosomal dominant mutation that causes early-onset Alzheimer’s disease. Methods: Between January and August, 2010, 18–26-year-old presenilin 1 (PSEN1) E280A mutation carriers and non- carriers from the Colombian Alzheimer’s Prevention Initiative Registry in Medellín Antioquia, Colombia, hadstructural MRI, functional MRI during associative memory encoding and novel viewing and control tasks, and cognitive assessments. Consenting participants also had lumbar punctures and venepunctures. Outcome measures were task-dependent hippocampal or parahippocampal activations and precuneus or posterior cingulate deactivations, regional grey matter reductions, CSF Aβ1–42, total tau and phospho-tau181 concentrations, and plasma Aβ1–42 concentrations and Aβ1–42:Aβ1–40 ratios. Structural and functional MRI data were compared using automated brain mapping algorithms and search regions related to Alzheimer’s disease. Cognitive and fl uid biomarkers werecompared using Mann-Whitney tests. Findings 44 participants were included: 20 PSEN1 E280A mutation carriers and 24 non-carriers. The carrier and non-carrier groups did not diff er signifi cantly in their dementia ratings, neuropsychological test scores, or proportion of apolipoprotein E (APOE) ε4 carriers. Compared with non-carriers, carriers had greater right hippocampal and parahippocampal activation (p=0·001 and p Mención de responsabilidad : Eric M Reiman, Yakeel T Quiroz, Adam S Fleisher, Kewei Chen, Carlos Velez-Pardo, Marlene Jimenez-Del-Rio, Anne M Fagan, Aarti R Shah, Sergio Alvarez, Andrés Arbelaez, Margarita Giraldo, Natalia Acosta-Baena, Reisa A Sperling, Brad Dickerson, Chantal E Stern, Victoria Tirado, Claudia Munoz, Rebecca A Reiman, Matthew J Huentelman, Gene E Alexander, Jessica B S Langbaum, Kenneth S Kosik, Pierre N Tariot, Francisco Lopera Referencia : Lancet Neurol. 2012 Dec;11(12):1048-56. DOI (Digital Object Identifier) : 10.1016/S1474-4422(12)70228-4 PMID : 23137948 En línea : https://www.thelancet.com/journals/laneur/article/PIIS1474-4422(12)70228-4/fullt [...] Enlace permanente : https://hospitalpablotobon.cloudbiteca.com/pmb/opac_css/index.php?lvl=notice_display&id=3641 Brain imaging and fluid biomarker analysis in young adults at genetic risk for autosomal dominant Alzheimer's disease in the presenilin 1 E280A kindred: a case-control study [documento electrónico] / Sergio Álvarez Vallejo, ; Andrés Ignacio Arbeláez Medina, . - 2012.
Obra : The Lancet Neurology
Idioma : Inglés (eng)
Resumen : Background: We have previously characterised functional brain abnormalities in young adults at genetic risk for lateonset Alzheimer’s disease. To gain further knowledge on the preclinical phase of Alzheimer’s disease, we sought to characterise structural and functional MRI, CSF, and plasma biomarkers in a cohort of young adults carrying a high-penetrance autosomal dominant mutation that causes early-onset Alzheimer’s disease. Methods: Between January and August, 2010, 18–26-year-old presenilin 1 (PSEN1) E280A mutation carriers and non- carriers from the Colombian Alzheimer’s Prevention Initiative Registry in Medellín Antioquia, Colombia, hadstructural MRI, functional MRI during associative memory encoding and novel viewing and control tasks, and cognitive assessments. Consenting participants also had lumbar punctures and venepunctures. Outcome measures were task-dependent hippocampal or parahippocampal activations and precuneus or posterior cingulate deactivations, regional grey matter reductions, CSF Aβ1–42, total tau and phospho-tau181 concentrations, and plasma Aβ1–42 concentrations and Aβ1–42:Aβ1–40 ratios. Structural and functional MRI data were compared using automated brain mapping algorithms and search regions related to Alzheimer’s disease. Cognitive and fl uid biomarkers werecompared using Mann-Whitney tests. Findings 44 participants were included: 20 PSEN1 E280A mutation carriers and 24 non-carriers. The carrier and non-carrier groups did not diff er signifi cantly in their dementia ratings, neuropsychological test scores, or proportion of apolipoprotein E (APOE) ε4 carriers. Compared with non-carriers, carriers had greater right hippocampal and parahippocampal activation (p=0·001 and p Mención de responsabilidad : Eric M Reiman, Yakeel T Quiroz, Adam S Fleisher, Kewei Chen, Carlos Velez-Pardo, Marlene Jimenez-Del-Rio, Anne M Fagan, Aarti R Shah, Sergio Alvarez, Andrés Arbelaez, Margarita Giraldo, Natalia Acosta-Baena, Reisa A Sperling, Brad Dickerson, Chantal E Stern, Victoria Tirado, Claudia Munoz, Rebecca A Reiman, Matthew J Huentelman, Gene E Alexander, Jessica B S Langbaum, Kenneth S Kosik, Pierre N Tariot, Francisco Lopera Referencia : Lancet Neurol. 2012 Dec;11(12):1048-56. DOI (Digital Object Identifier) : 10.1016/S1474-4422(12)70228-4 PMID : 23137948 En línea : https://www.thelancet.com/journals/laneur/article/PIIS1474-4422(12)70228-4/fullt [...] Enlace permanente : https://hospitalpablotobon.cloudbiteca.com/pmb/opac_css/index.php?lvl=notice_display&id=3641 Reserva
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Código de barras Número de Ubicación Tipo de medio Ubicación Sección Estado DD000212 AC-2012-052 Archivo digital Producción Científica Artículos científicos Disponible Embolización terapéutica en pacientes pediátricos Informe de dos casos en el Hospital Pablo Tobón Uribe, Medellín, Colombia / Camila Rodríguez Castaño ; Sergio Álvarez Vallejo ; David Andrés Espinal Botero
Título : Embolización terapéutica en pacientes pediátricos Informe de dos casos en el Hospital Pablo Tobón Uribe, Medellín, Colombia Otros títulos : Therapeutic embolization in pediatric patients. Report of two cases from Hospital Pablo Tobón Uribe (Medellín, Colombia) Tipo de documento : documento electrónico Autores : Camila Rodríguez Castaño, ; Sergio Álvarez Vallejo, ; David Andrés Espinal Botero, Fecha de publicación : 2009 Títulos uniformes : Iatreia Idioma : Español (spa) Palabras clave : Cateterismo periférico embolización terapéutica falla renal crónica hemoptisis Resumen : Se presentan los casos de dos pacientes pediátricos en quienes se hicieron procedimientos de embolización terapéutica para controlar rápida y adecuadamente las condiciones clínicas que ponían en peligro sus vidas; el primero fue un niño de dos y medio años con hemoptisis masiva; el segundo, una niña de 10 años con proteinuria masiva debida a síndrome nefrótico que causaba hipoproteinemia y desnutrición las cuales impedían programarla para trasplante renal. En ambos pacientes el desenlace del intervencionismo, que no tuvo complicaciones, fue favorable. Mención de responsabilidad : Luz Natalia Vega Molina, Camila Andrea Rodríguez Castaño, Sergio Álvarez Vallejo, David Andrés Espinal Referencia : Iatreia. 2009;22(4):392-6. Derechos de uso : CC BY-NC-SA En línea : https://revistas.udea.edu.co/index.php/iatreia/article/view/11114 Enlace permanente : https://hospitalpablotobon.cloudbiteca.com/pmb/opac_css/index.php?lvl=notice_display&id=3484 Embolización terapéutica en pacientes pediátricos Informe de dos casos en el Hospital Pablo Tobón Uribe, Medellín, Colombia = Therapeutic embolization in pediatric patients. Report of two cases from Hospital Pablo Tobón Uribe (Medellín, Colombia) [documento electrónico] / Camila Rodríguez Castaño, ; Sergio Álvarez Vallejo, ; David Andrés Espinal Botero, . - 2009.
Obra : Iatreia
Idioma : Español (spa)
Palabras clave : Cateterismo periférico embolización terapéutica falla renal crónica hemoptisis Resumen : Se presentan los casos de dos pacientes pediátricos en quienes se hicieron procedimientos de embolización terapéutica para controlar rápida y adecuadamente las condiciones clínicas que ponían en peligro sus vidas; el primero fue un niño de dos y medio años con hemoptisis masiva; el segundo, una niña de 10 años con proteinuria masiva debida a síndrome nefrótico que causaba hipoproteinemia y desnutrición las cuales impedían programarla para trasplante renal. En ambos pacientes el desenlace del intervencionismo, que no tuvo complicaciones, fue favorable. Mención de responsabilidad : Luz Natalia Vega Molina, Camila Andrea Rodríguez Castaño, Sergio Álvarez Vallejo, David Andrés Espinal Referencia : Iatreia. 2009;22(4):392-6. Derechos de uso : CC BY-NC-SA En línea : https://revistas.udea.edu.co/index.php/iatreia/article/view/11114 Enlace permanente : https://hospitalpablotobon.cloudbiteca.com/pmb/opac_css/index.php?lvl=notice_display&id=3484 Reserva
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Código de barras Número de Ubicación Tipo de medio Ubicación Sección Estado DD000052 AC-2009-014 Archivo digital Producción Científica Artículos científicos Disponible Documentos electrónicos
2009-014.pdfAdobe Acrobat PDF Right gastric artery embolization prior to treatment with yttrium-90 microspheres / Sergio Álvarez Vallejo
Título : Right gastric artery embolization prior to treatment with yttrium-90 microspheres Tipo de documento : documento electrónico Autores : Sergio Álvarez Vallejo, Fecha de publicación : 2007 Títulos uniformes : CardioVascular and Interventional Radiology Idioma : Inglés (eng) Palabras clave : Embolization Right gastric artery Yttrium90 Resumen : Purpose: Intra-arterial infusion of yttrium-90 microspheres is a form of radiation treatment for unresectable hepatic neoplasms. Misdeposition of particles in the gastroduodenal area such as the right gastric artery (RGA) may occur with serious consequences. We present a series of patients who underwent a detailed vascular study followed by RGA embolization. Special emphasis is placed on anatomic variations and technical considerations. Methods: In a 1 year period, 27 patients were treated. Initial vascular evaluation was performed, with careful attention to anatomic variants or extrahepatic arterial supply, especially to the gastroduodenal area. Embolization of such arteries was planned if needed. RGA embolization was performed antegradely from the hepatic artery or retrogradely via the left gastric artery (LGA). Postprocedural follow-up included clinical interview and gastroscopy if necessary. Results: RGA embolization was performed in 9 patients presenting with primary (n = 3) or metastatic liver tumors (n = 6). Six patients underwent antegrade RGA embolization and 3 had embolization done retrogradely via the LGA. Retrograde access was chosen for anatomic reasons. None of the patients complained of gastroduodenal symptoms. Conclusion: RGA embolization can help minimize the gastroduodenal deposition of radioactive particles. RGA embolization should routinely be carried out. The procedure can be performed, with similar technical success, by both anterograde and retrograde approaches. Mención de responsabilidad : Octavio Cosin, Jose Ignacio Bilbao, Sergio Alvarez, Esther de Luis, Alberto Alonso & Antonio Martinez-Cuesta Referencia : Cardiovasc Intervent Radiol. Jan-Feb 2007;30(1):98-103. DOI (Digital Object Identifier) : 10.1007/s00270-006-0028-5 PMID : 17031727 En línea : https://link.springer.com/article/10.1007%2Fs00270-006-0028-5 Enlace permanente : https://hospitalpablotobon.cloudbiteca.com/pmb/opac_css/index.php?lvl=notice_display&id=4423 Right gastric artery embolization prior to treatment with yttrium-90 microspheres [documento electrónico] / Sergio Álvarez Vallejo, . - 2007.
Obra : CardioVascular and Interventional Radiology
Idioma : Inglés (eng)
Palabras clave : Embolization Right gastric artery Yttrium90 Resumen : Purpose: Intra-arterial infusion of yttrium-90 microspheres is a form of radiation treatment for unresectable hepatic neoplasms. Misdeposition of particles in the gastroduodenal area such as the right gastric artery (RGA) may occur with serious consequences. We present a series of patients who underwent a detailed vascular study followed by RGA embolization. Special emphasis is placed on anatomic variations and technical considerations. Methods: In a 1 year period, 27 patients were treated. Initial vascular evaluation was performed, with careful attention to anatomic variants or extrahepatic arterial supply, especially to the gastroduodenal area. Embolization of such arteries was planned if needed. RGA embolization was performed antegradely from the hepatic artery or retrogradely via the left gastric artery (LGA). Postprocedural follow-up included clinical interview and gastroscopy if necessary. Results: RGA embolization was performed in 9 patients presenting with primary (n = 3) or metastatic liver tumors (n = 6). Six patients underwent antegrade RGA embolization and 3 had embolization done retrogradely via the LGA. Retrograde access was chosen for anatomic reasons. None of the patients complained of gastroduodenal symptoms. Conclusion: RGA embolization can help minimize the gastroduodenal deposition of radioactive particles. RGA embolization should routinely be carried out. The procedure can be performed, with similar technical success, by both anterograde and retrograde approaches. Mención de responsabilidad : Octavio Cosin, Jose Ignacio Bilbao, Sergio Alvarez, Esther de Luis, Alberto Alonso & Antonio Martinez-Cuesta Referencia : Cardiovasc Intervent Radiol. Jan-Feb 2007;30(1):98-103. DOI (Digital Object Identifier) : 10.1007/s00270-006-0028-5 PMID : 17031727 En línea : https://link.springer.com/article/10.1007%2Fs00270-006-0028-5 Enlace permanente : https://hospitalpablotobon.cloudbiteca.com/pmb/opac_css/index.php?lvl=notice_display&id=4423 Reserva
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Código de barras Número de Ubicación Tipo de medio Ubicación Sección Estado DD000923 AC-2007-018 Archivo digital Producción Científica Artículos científicos Disponible