Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 14 de 14
Filter
1.
Eur J Heart Fail ; 25(8): 1228-1242, 2023 08.
Article in English | MEDLINE | ID: mdl-37042062

ABSTRACT

AIM: The globalization of clinical trials has highlighted geographic differences in patient characteristics, treatments, and outcomes. We examined these differences in PARADISE-MI. METHODS AND RESULTS: Overall, 23.0% were randomized in Eastern Europe/Russia, 17.5% in Western Europe, 12.2% in Southern Europe, 10.1% in Northern Europe, 12.0% in Latin America (LA), 9.3% in North America (NA), 10.0% in East/South-East Asia and 5.8% in South Asia (SA). Those from Asia, particularly SA, were different from patients enrolled in the other regions, being younger and thinner. They also differed in terms of comorbidities (high prevalence of diabetes and low prevalence of atrial fibrillation), type of myocardial infarction (more often ST-elevation myocardial infarction), and treatment (low rate of primary percutaneous coronary intervention). By contrast, patients from LA did not differ meaningfully from those randomized in Europe or NA. Use of angiotensin-converting enzyme inhibitors/angiotensin receptor blockers (34.8%) and beta-blockers (65.5%) was low in SA, whereas mineralocorticoid receptor antagonist use was lowest in NA (22%) and highest in Eastern Europe/Russia (53%). Rates of the primary composite outcome of cardiovascular death or incident heart failure varied two-fold among regions, with the lowest rate in SA (4.6/100 person-years) and the highest in LA (9.2/100 person-years). Rates of incident heart failure varied almost six-fold among regions, with the lowest rate in SA (1.0/100 person-years) and the highest in Northern Europe (5.9/100 person-years). The effect of sacubitril/valsartan was not modified by region. CONCLUSION: In PARADISE-MI, there were substantial regional differences in patient characteristics, treatments and outcomes. Although the generalizability of these findings to a 'real-world' unselected population may be limited, these findings underscore the importance of considering both regional and within-region differences when designing global clinical trials.


Subject(s)
Heart Failure , Myocardial Infarction , Humans , Heart Failure/drug therapy , Heart Failure/epidemiology , Myocardial Infarction/drug therapy , Europe, Eastern/epidemiology , Valsartan/therapeutic use , Europe/epidemiology
2.
Arch Cardiol Mex ; 89(1): 147-153, 2019.
Article in English | MEDLINE | ID: mdl-31702741

ABSTRACT

Objective: The objective of the study was to describe the feasibility of single catheter intervention using the transradial approach for percutaneous coronary intervention (PCI). Background: The transradial approach for PCIs has fewer vascular events and complications and lower mortality rate. However, complications can result from forearm artery tortuosity, a longer learning curve and artery spasm that can complicate, delay and impede coronary artery interventions. The latter is usually exacerbated by the changing and manipulation of catheters. Methods: We performed a study using a single catheter on patients undergoing coronary assessment and treatment. Procedural outcomes including success, procedural time, bleeding, access site complications, and contrast used were all analyzed. Results: We included 327 patients, of whom 70% were male. The mean age was 63.3 ± 11.1 years, mean height was 165.9 ± 7.7 cm, mean weight was 73.3 ± 11.3 kg, and mean body index was 26.5 ± 3.5 kg/m2. Contrast use averaged 158.5 ± 60.5 ml. Three vessels were treated in 3% of all cases, two vessels in 32%, and one vessel in 65%. Procedural success was achieved in 94.5% of the cases. A second catheter was required in 9 cases (2.7%), and crossover to the femoral approach was performed in 9 cases (2.7%) due to a lack of support, artery spasm, difficult anatomy, or the need for a larger catheter. Three complications were related to access, including a Class 2 hematoma that was treated conservatively with no further complications. Conclusions: Our study showed that using a single catheter to perform both diagnostic and therapeutic procedures has a higher success rate, lower spasm incidence, and fewer complications than reported in literature.


Objetivo: Describir la factibilidad del uso de un solo catéter en el intervencionismo coronario percutáneo por vía transradial. Antecedentes: El abordaje transradial en las intervenciones coronarias ha mostrado menores eventos cardiovasculares y complicaciones, y menor mortalidad. Sin embargo, algunos eventos adversos pueden resultar por trotuosidad de las arterias del brazo, curva de aprendizaje más larga o espasmo arterial que puede complicar, retardar o impedir la intervención coronaria. Ésta última es usualmente exacerbada por el intercambio de catéterres o la manipulación de los mismos. Métodos: Realizamos un studio utilizando un solo catéter en pacientes sometidos a coronariografía e intervención coronaria. Los desenlaces del procedimiento incluyendo éxito, tiempo de procedimiento, sangrado, complicaciones en el sitio de acceso y uso de medio de contraste fueron analizados. Resultados: Incluimos 327 pacientes, 70% de los cuales fueron varones. La edad promedio fue de 63.3 ± 11.1 años, la estatura promedio fue de 165.9 ± 7.7 cm, peso promedio de 73.3 ± 11.3 kg y el índice de masa corporal promedio de 26.5 ± 3.5 kg/m2. El contraste utilizado promedio fue 158.5 ± 60.5 ml. El total de vasos tratados fue de tres en 3% de los casos, dos en 32% de los casos y uno en 65%. El éxito del procedimiento fue logrado en 94.5% de los pacientes No obstante, un Segundo catéter fue requerido en 9 intervenciones (2.7%), y cambio en la vía de acceso fue realizado en 9 casos (2.7%) por falta de apoyo, espasmo arterial, anatomía dificil o necesidad de un catéter de mayor lumen. Tres complicaciones asociadas al sitio de acceso incluyendo un hematoma clase 2 fueron registradas el cual se trató conservadoramente. Conclusiones: Nuestro estudio mostró que el uso de un catéter único para realizar tanto procedimientos diagnósticos como terapéuticos tiene una tasa de éxito mayor, con menor incidencia de espasmo y complicaciones reportadas en la literatura.


Subject(s)
Cardiac Catheterization/methods , Cardiac Catheters , Coronary Artery Disease/surgery , Percutaneous Coronary Intervention/instrumentation , Percutaneous Coronary Intervention/methods , Radial Artery , Aged , Coronary Artery Disease/pathology , Feasibility Studies , Female , Humans , Male , Middle Aged
3.
Arch Cardiol Mex ; 89(2): 160-166, 2019.
Article in English | MEDLINE | ID: mdl-31314014

ABSTRACT

Objective: The objective of the study was to describe the feasibility of single catheter intervention using the transradial approach for percutaneous coronary intervention (PCI). Background: The transradial approach for PCIs has fewer vascular events and complications and lower mortality rate. However, complications can result from forearm artery tortuosity, a longer learning curve and artery spasm that can complicate, delay and impede coronary artery interventions. The latter is usually exacerbated by the changing and manipulation of catheters. Methods: We performed a study using a single catheter on patients undergoing coronary assessment and treatment. Procedural outcomes including success, procedural time, bleeding, access site complications, and contrast used were all analyzed. Results: We included 327 patients, of whom 70% were male. The mean age was 63.3 ± 11.1 years, mean height was 165.9 ± 7.7 cm, mean weight was 73.3 ± 11.3 kg, and mean body index was 26.5 ± 3.5 kg/m2. Contrast use averaged 158.5 ± 60.5 ml. Three vessels were treated in 3% of all cases, two vessels in 32%, and one vessel in 65%. Procedural success was achieved in 94.5% of the cases. A second catheter was required in 9 cases (2.7%), and crossover to the femoral approach was performed in 9 cases (2.7%) due to a lack of support, artery spasm, difficult anatomy, or the need for a larger catheter. Three complications were related to access, including a Class 2 hematoma that was treated conservatively with no further complications. Conclusions: Our study showed that using a single catheter to perform both diagnostic and therapeutic procedures has a higher success rate, lower spasm incidence, and fewer complications than reported in literature.


Objetivo: Describir la factibilidad del uso de un solo catéter en el intervencionismo coronario percutáneo por vía transradial. Antecedentes: El abordaje transradial en las intervenciones coronarias ha mostrado menores eventos cardiovasculares y complicaciones, y menor mortalidad. Sin embargo, algunos eventos adversos pueden resultar por trotuosidad de las arterias del brazo, curva de aprendizaje más larga o espasmo arterial que puede complicar, retardar o impedir la intervención coronaria. Ésta última es usualmente exacerbada por el intercambio de catéterres o la manipulación de los mismos. Métodos: Realizamos un studio utilizando un solo catéter en pacientes sometidos a coronariografía e intervención coronaria. Los desenlaces del procedimiento incluyendo éxito, tiempo de procedimiento, sangrado, complicaciones en el sitio de acceso y uso de medio de contraste fueron analizados. Resultados: Incluimos 327 pacientes, 70% de los cuales fueron varones. La edad promedio fue de 63.3 ± 11.1 años, la estatura promedio fue de 165.9 ± 7.7 cm, peso promedio de 73.3 ± 11.3 kg y el índice de masa corporal promedio de 26.5 ± 3.5 kg/m2. El contraste utilizado promedio fue 158.5 ± 60.5 ml. El total de vasos tratados fue de tres en 3% de los casos, dos en 32% de los casos y uno en 65%. El éxito del procedimiento fue logrado en 94.5% de los pacientes No obstante, un Segundo catéter fue requerido en 9 intervenciones (2.7%), y cambio en la vía de acceso fue realizado en 9 casos (2.7%) por falta de apoyo, espasmo arterial, anatomía dificil o necesidad de un catéter de mayor lumen. Tres complicaciones asociadas al sitio de acceso incluyendo un hematoma clase 2 fueron registradas el cual se trató conservadoramente. Conclusiones: Nuestro estudio mostró que el uso de un catéter único para realizar tanto procedimientos diagnósticos como terapéuticos tiene una tasa de éxito mayor, con menor incidencia de espasmo y complicaciones reportadas en la literatura.

4.
Arch. cardiol. Méx ; 89(2): 160-166, Apr.-Jun. 2019. tab, graf
Article in English | LILACS | ID: biblio-1142177

ABSTRACT

Abstract Objective: The objective of the study was to describe the feasibility of single catheter intervention using the transradial approach for percutaneous coronary intervention (PCI). Background: The transradial approach for PCIs has fewer vascular events and complications and lower mortality rate. However, complications can result from forearm artery tortuosity, a longer learning curve and artery spasm that can complicate, delay and impede coronary artery interventions. The latter is usually exacerbated by the changing and manipulation of catheters. Methods: We performed a study using a single catheter on patients undergoing coronary assessment and treatment. Procedural outcomes including success, procedural time, bleeding, access site complications, and contrast used were all analyzed. Results: We included 327 patients, of whom 70% were male. The mean age was 63.3 ± 11.1 years, mean height was 165.9 ± 7.7 cm, mean weight was 73.3 ± 11.3 kg, and mean body index was 26.5 ± 3.5 kg/m2. Contrast use averaged 158.5 ± 60.5 ml. Three vessels were treated in 3% of all cases, two vessels in 32%, and one vessel in 65%. Procedural success was achieved in 94.5% of the cases. A second catheter was required in 9 cases (2.7%), and crossover to the femoral approach was performed in 9 cases (2.7%) due to a lack of support, artery spasm, difficult anatomy, or the need for a larger catheter. Three complications were related to access, including a Class 2 hematoma that was treated conservatively with no further complications. Conclusions: Our study showed that using a single catheter to perform both diagnostic and therapeutic procedures has a higher success rate, lower spasm incidence, and fewer complications than reported in literature.


Resumen Objetivo: Describir la factibilidad del uso de un solo catéter en el intervencionismo coronario percutáneo por vía transradial. Antecedentes: El abordaje transradial en las intervenciones coronarias ha mostrado menores eventos cardiovasculares y complicaciones, y menor mortalidad. Sin embargo, algunos eventos adversos pueden resultar por trotuosidad de las arterias del brazo, curva de aprendizaje más larga o espasmo arterial que puede complicar, retardar o impedir la intervención coronaria. Ésta última es usualmente exacerbada por el intercambio de catéteres o la manipulación de los mismos. Métodos: Realizamos un studio utilizando un solo catéter en pacientes sometidos a coronariografía e intervención coronaria. Los desenlaces del procedimiento incluyendo éxito, tiempo de procedimiento, sangrado, complicaciones en el sitio de acceso y uso de medio de contraste fueron analizados. Resultados: Incluimos 327 pacientes, 70% de los cuales fueron varones. La edad promedio fue de 63.3 ± 11.1 años, la estatura promedio fue de 165.9 ± 7.7 cm, peso promedio de 73.3 ± 11.3 kg y el índice de masa corporal promedio de 26.5 ± 3.5 kg/m2. El contraste utilizado promedio fue 158.5 ± 60.5 ml. El total de vasos tratados fue de tres en 3% de los casos, dos en 32% de los casos y uno en 65%. El éxito del procedimiento fue logrado en 94.5% de los pacientes No obstante, un Segundo catéter fue requerido en 9 intervenciones (2.7%), y cambio en la vía de acceso fue realizado en 9 casos (2.7%) por falta de apoyo, espasmo arterial, anatomía dificil o necesidad de un catéter de mayor lumen. Tres complicaciones asociadas al sitio de acceso incluyendo un hematoma clase 2 fueron registradas el cual se trató conservadoramente. Conclusiones: Nuestro estudio mostró que el uso de un catéter único para realizar tanto procedimientos diagnósticos como terapéuticos tiene una tasa de éxito mayor, con menor incidencia de espasmo y complicaciones reportadas en la literatura.


Subject(s)
Aged , Female , Humans , Male , Middle Aged , Coronary Artery Disease/surgery , Cardiac Catheterization/methods , Radial Artery , Percutaneous Coronary Intervention/instrumentation , Percutaneous Coronary Intervention/methods , Cardiac Catheters , Coronary Artery Disease/pathology , Feasibility Studies
5.
Cardiorenal Med ; 6(3): 230-6, 2016 May.
Article in English | MEDLINE | ID: mdl-27275159

ABSTRACT

BACKGROUND: Chronic kidney disease is a disorder of epidemic proportions that impairs cardiac function. Cardiovascular diseases are the leading cause of death in hemodialysis patients, and the understanding of new nontraditional predictors of mortality could improve their outcomes. Right ventricular systolic dysfunction (RVSD) has recently been recognized as a predictor of cardiovascular death in heart failure and hemodialysis patients. However, the factors contributing to RVSD in hemodialysis patients remain unknown. The aim of this study was to evaluate the clinical and echocardiographic factors associated with RVSD in hemodialysis patients. METHODS: A cross-sectional study was conducted in which 100 outpatients with end-stage renal disease on chronic hemodialysis were evaluated. A transthoracic echocardiographic examination was performed at optimal dry weight. Right ventricular systolic function was evaluated using tricuspid annular plane systolic excursion (TAPSE). Clinical and echocardiographic data were recorded for each patient. A multivariate linear logistic regression was created using RVSD (TAPSE <14 mm) as the dependent variable. RESULTS: Fifteen patients with RVSD and 85 patients without RVSD were analyzed. TAPSE had a positive correlation with left ventricular ejection fraction (LVEF) and myocardial relaxation velocity. Independent contributors to RVSD were LVEF (OR 1.14, 95% CI 1.05-1.26), left ventricular mass index (OR 1.02, 95% CI 1.00-1.04), and myocardial relaxation velocity (OR 1.81, 95% CI 1.18-3.19). CONCLUSIONS: Echocardiographic factors were significant contributors to RVSD. These measurements could be included as part of the routine workup in all end-stage renal disease patients on hemodialysis.

6.
Arch Cardiol Mex ; 85(3): 207-14, 2015.
Article in English | MEDLINE | ID: mdl-26337914

ABSTRACT

OBJECTIVE: RENASICA III is a prospective, multicenter registry on acute coronary syndromes (ACS). The main objective will be to identify the outcome in tertiary and community hospitals and perform strategies to improve quality of care in Mexico. METHODS: RENASICA III will enroll 8000 patients in public health and private hospitals. The registry began in November 2012 with a planned recruitment during 12 months and a 1-year follow-up. The study population will comprise a consecutive, prospective cohort of patients >18 years with ACS final diagnosis and evidence of ischemic heart disease. The structure, data collection and data analysis will be based on quality current recommendations for registries. The protocol has been approved by institutional ethics committees in all participant centers. All patients will sign an informed consent form. Currently in Mexico, there is a need of observational registries that include patients with treatment in the everyday clinical practice so the data could be validated and additional information could be obtained versus the one from the clinical trials. In this way, RENASICA III emerges as a link among randomized clinical trials developed by experts and previous Mexican experience.


Subject(s)
Acute Coronary Syndrome/therapy , Registries , Humans , Mexico , Prospective Studies , Randomized Controlled Trials as Topic
7.
Arch. cardiol. Méx ; 85(3): 207-214, jul.-sep. 2015. ilus
Article in English | LILACS | ID: lil-767585

ABSTRACT

Objective: RENASICA III is a prospective, multicenter registry on acute coronary syndromes (ACS). The main objective will be to identify the outcome in tertiary and community hospitals and perform strategies to improve quality of care in Mexico. Methods: RENASICA III will enroll 8000 patients in public health and private hospitals. The registry began in November 2012 with a planned recruitment during 12 months and a 1-year follow-up. The study population will comprise a consecutive, prospective cohort of patients >18 years with ACS final diagnosis and evidence of ischemic heart disease. The structure, data collection and data analysis will be based on quality current recommendations for registries. The protocol has been approved by institutional ethics committees in all participant centers. All patients will sign an informed consent form. Currently in Mexico, there is a need of observational registries that include patients with treatment in the everyday clinical practice so the data could be validated and additional information could be obtained versus the one from the clinical trials. In this way, RENASICA III emerges as a link among randomized clinical trials developed by experts and previous Mexican experience.


Objetivo: RENASICA III es un registro prospectivo multicéntrico en síndromes coronarios agudos (SCA). El principal objetivo será identificar en México la evolución en hospitales de segundo y tercer nivel para establecer estrategias para mejorar la calidad de la atención. Métodos: RENASICA III ingresará 8000 pacientes en hospitales de instituciones de salud y privados. El registro inició en noviembre de 2012 con un reclutamiento durante 12 meses y un seguimiento al alta hospitalaria de 12 meses. La población en estudio incluirá una cohorte prospectiva de pacientes >18 años con diagnóstico final de un SCA y evidencia objetiva de cardiopatía isquémica. La estructura del registro, la recolección de datos y el análisis se basó en las recomendaciones actuales para la calidad de los registros en enfermedad cardiovascular. El protocolo fue aprobado por los comités institucionales de ética de todos los centros participantes. Todos los pacientes firmarán un consentimiento informado. En la actualidad existe en México la necesidad de registros observacionales que incluyan pacientes sometidos a tratamiento en la práctica clínica contemporánea para validar los datos y obtener información complementaria de los grandes estudios aleatorizados controlados. RENASICA III emerge como un vínculo entre estudios aleatorizados controlados conducidos por expertos y la experiencia mexicana previa.


Subject(s)
Humans , Acute Coronary Syndrome/therapy , Registries , Mexico , Prospective Studies , Randomized Controlled Trials as Topic
8.
Health Expect ; 18(5): 643-52, 2015 Oct.
Article in English | MEDLINE | ID: mdl-23711169

ABSTRACT

BACKGROUND: The term 'Patient Empowerment' (PE) is a growing concept ­ so in popularity as in application ­ covering situations where citizens are encouraged to take an active role in the management of their own health. This concept is serving as engine power for increasing the quality of health systems, but a question is still unanswered, 'how PE will be effectively achieved?' Beyond psychological implications, empowerment of patients in daily practice relies on technology and the way it is used. Unfortunately, the heterogeneity of approaches and technologies makes difficult to have a global vision of how PE is being performed. OBJECTIVE: To clarify how technology is being applied for enhancing patient empowerment as well as to identify current (and future) trends and milestones in this issue. SEARCH STRATEGY: Searches for relevant English language articles using Medline, Scopus, ACM Digital Library, Springer Link, EBSCO host and ScienceDirect databases from the year 2000 until October 2012 were conducted. Among others, a selection criterion was to review articles including terms 'patient' and 'empowerment' in title, abstract or as keywords. MAIN RESULTS AND CONCLUSIONS: Results state that practical approaches to empower patients vary in scope, aim and technology. Health literacy of patients, remote access to health services, and self-care mechanisms are the most valued ways to accomplish PE. Current technology already allows establishing the first steps in the road ahead, but a change of attitude by all stakeholders (i.e. professionals, patients, policy makers, etc.) is required.


Subject(s)
Information Systems , Patient Participation , Humans , Patient Education as Topic
9.
Arch Cardiol Mex ; 82(3): 218-29, 2012.
Article in Spanish | MEDLINE | ID: mdl-23021359

ABSTRACT

Ischemic heart disease is the leading cause of death and heart failure worldwide. That is why it is important to develop new therapeutic modalities to decrease mortality and long-term complications in these patients. One of the main lines of research worldwide is myocardial regeneration, using progenitor cells in order to improve systolic and diastolic function in patients with ischemic heart disease, as well as to increase their survival. There have been carried out, with great enthusiasm worldwide, human and animal studies to define the usefulness of stem cells in the management of patients with ischemic heart disease. Today, regenerative therapy in ischemic heart disease is considered a novel therapeutic tool, with substantial theoretical benefits and few side effects. Here we present the scientific principles that support the use of this therapy, discuss the current clinical evidence available; and point out the controversial issues still not clarified on its use and usefulness in the short and long term.


Subject(s)
Myocardial Ischemia/surgery , Stem Cell Transplantation , Clinical Trials as Topic , Humans
10.
Arch. cardiol. Méx ; 82(3): 218-229, jul.-sept. 2012. ilus, tab
Article in Spanish | LILACS | ID: lil-685336

ABSTRACT

La cardiopatía isquémica es la principal causa de muerte e insuficiencia cardiaca a nivel mundial. Esto hace de vital importancia el desarrollo de nuevas modalidades terapéuticas, que disminuyan la mortalidad y complicaciones a largo plazo en estos pacientes. Una de las principales líneas de investigación a nivel mundial es la regeneración miocárdica a partir de células progenitoras, con el fin de mejorar la función sistólica y diastólica de los pacientes con cardiopatía isquémica, además de incrementar su sobrevida. Con bases teóricas y fisiológicas sobre la función de estas células, se han llevado a cabo con gran entusiasmo a nivel mundial, estudios en animales y humanos para tratar de definir la utilidad del empleo de las células madre, en el manejo de los pacientes con cardiopatía isquémica. En la actualidad, la terapia regenerativa en la cardiopatía isquémica es considerada una herramienta terapéutica novedosa, de beneficios teóricos considerables y pocos efectos adversos. En esta revisión presentamos los fundamentos científicos básicos que apoyan el empleo de esta terapia, la evidencia clínica actual sobre su beneficio. Señalamos los puntos controversiales y las perspectivas sobre su empleo y utilidad a corto y largo plazo.


Ischemic heart disease is the leading cause of death and heart failure worldwide. That is why it is important to develop new therapeutic modalities to decrease mortality and long-term complications in these patients. One of the main lines of research worldwide is myocardial regeneration, using progenitor cells in order to improve systolic and diastolic function in patients with ischemic heart disease, as well as to increase their survival. There have been carried out, with great enthusiasm worldwide, human and animal studies to define the usefulness of stem cells in the management of patients with ischemic heart disease. Today, regenerative therapy in ischemic heart disease is considered a novel therapeutic tool, with substantial theoretical benefits and few side effects. Here we present the scientific principles that support the use of this therapy, discuss the current clinical evidence available; and point out the controversial issues still not clarified on its use and usefulness in the short and long term.


Subject(s)
Humans , Myocardial Ischemia/surgery , Stem Cell Transplantation , Clinical Trials as Topic
11.
IEEE Trans Inf Technol Biomed ; 15(2): 316-23, 2011 Mar.
Article in English | MEDLINE | ID: mdl-21216720

ABSTRACT

This paper is focused on the management of virtual organizations (VO) inside healthcare environments where grid technology is used as middleware for a healthcare services-oriented architecture (HSOA). Some of the main tasks considered for the provision of an efficient VO management are management of users, assignation of roles to users, assignation of privileges to roles, and definition of resources access policies. These tasks are extremely close to privilege management infrastructures (PMI), so we face VO management services as part of the PMI supporting access control to healthcare resources inside the HSOA. In order to achieve a completely open and interoperable PMI, we review and apply standards of security and architectural design. Moreover, semantic technologies are introduced in decision points for access control allowing the management of a high degree of descriptors by means of ontologies and infer the decision making through rules and reasoners.


Subject(s)
Computer Security , Computer Systems , Database Management Systems , Medical Informatics/methods , Access to Information
12.
Stud Health Technol Inform ; 137: 181-9, 2008.
Article in English | MEDLINE | ID: mdl-18560080

ABSTRACT

A critical issue in healthcare informatics is to facilitate the integration and interoperability of applications. This goal can be achieved through an open architecture based on a middleware independent from specific applications; useful for working with existing systems, as well as for the integration of new systems. Several standard organizations are making efforts toward this target. This work is based on the EN 12967-1,2,3, developed by CEN, that follows the ODP (Open Distributed Processing) methodology, providing a specification of distributed systems based on the definition of five viewpoints. However, only the three upper viewpoints are used to produce EN 12967, the two lower viewpoints should be considered in the implementation context. We are using Semantic Grid for lower views and Semantic Web and Web Services for the definition of the upper views. We analyze benefits of using these methods and technologies and expose methodology for the development of this semantic healthcare middleware observing European Standards.


Subject(s)
Artificial Intelligence , Information Systems , Internet , Semantics , Systems Integration , Europe , Humans , Software
13.
Arch. Inst. Cardiol. Méx ; 68(5): 401-20, sept.-oct. 1998. tab, ilus
Article in Spanish | LILACS | ID: lil-227592

ABSTRACT

Objetivo. Conocer la evolución del enfermo con Infarto Agudo del Miocardio (IAM) sometido a trombolisis, las complicaciones inherentes a dicha terapéutica y la mortalidad a 10 días. Material y método. De junio de 1989 a agosto 1994 fueron estudiados 473 enfermos que ingresaron a la Unidad Coronaria, con la diagnóstico de IAM a quienes se les administró trombolisis. En 20 pacientes la edad fue menor de 40 años, 373 entre 40 y 70 años, y 80 pacientes fueron mayores de 70 años; el 84 por ciento fueron hombres y 16 por ciento mujeres. Se describen sus características clínicas, complicaciones, evolución, y hallazgos angiográficos. Resultados: De un total de 473 enfermos con diagnóstico de IAM, el 86.3 por ciento recibieron estreptoquinasa (SK) y el 13.7 por ciento activador del plasminógeno tisular (rt-PA). La localización del IAM fué anterior en 234 pacientes, e inferior en 239. El 63 por ciento presentó lavado enzimático y en el 81 por ciento se observó descenso precoz del segmento ST. Las arritmias post-trombolisis se observaron en el 64.7 por ciento. El sangrado mayor se observó en el 11.8 por ciento y hemorragia cerebral en el 0.4 por ciento únicamente en pacientes trombolisados con rt-PA. El 22 por ciento tuvieron angor post-infarto y el reinfarto se presentó en el 4 por ciento, ruptura cardiaca en el 1.4 por ciento que evolucionaron al choque y muerte, insuficiencia mitral en el 2.1 por ciento demostrada por ecocardiografía. Se llevaron a angiografía coronaria 377 pacientes, (80 por ciento) la que se realizó en los primero 5 días en el 50.7 por ciento. La arteria responsable del infarto (ARI) fue la descendente anterior en 213 pacientes y en 95 la coronaria derecha. La disfunsión ventricular izquierda docuentada clínica, radiológica y demodinámicamente se observó en el 23 por ciento de pacientes con IAM anterior, y en 5 por ciento de los infartos de cara inferior. El choque cardiogénico se observó en el 7 por ciento. Se realizó cirugía de ravascularización coronaria en 106 pacientes, y angioplastía coronaria en 67. La mortalidad a 10 días fue el 8.8 por ciento, principlamente por choque cardiogénico, arritmias ventriculares malignas y ruptura ventricular. Conclusiones.La permeabilidad útil de la ARI fue del 40 por ciento por angiografía coronaria realizada en promedio a las 145 hs después de la administración de trombolítico. La mortalidad temprana fue menor del 10 por ciento


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Fibrinolytic Agents/administration & dosage , Angiography , Angioplasty, Balloon , Arrhythmias, Cardiac/etiology , Cerebral Hemorrhage/etiology , Coronary Care Units/statistics & numerical data , Myocardial Infarction/complications , Myocardial Infarction/mortality , Myocardial Infarction/therapy , Thrombolytic Therapy/adverse effects , Thrombolytic Therapy/statistics & numerical data , Thrombolytic Therapy/mortality
14.
Arch. Inst. Cardiol. Méx ; 67(3): 186-94, mayo-jun. 1997. tab, ilus
Article in Spanish | LILACS | ID: lil-217296

ABSTRACT

Objetivo: Analizar el papel que juega el grado de permeabilidad de la arteria responsable del IAM en su evolución y su mortalidad, además de determinar su relación con los criterios clínicos de reperfusión. Material y métodos: Se estudiaron los pacientes con diagnóstico de IAM, en quienes se administró terapia trombolítica y que fueron llevados a coronariografía. Se utilizó la escala angiográfica del estudio TIMI para valorar el grado de permeabilidad de la arteria. Resultados: De un total de 473 pacientes con el diagnóstico de IAM, se realizó coronariografía a 377 (80 por ciento), la cual se efectuó en los primeros cinco días. Como arterias responsable del IAM la más frecuente fue la DA en 168 pacientes (45 por ciento) y la CD en 139 (36 por ciento). Observamos que el vaso se encontró permeable en 276 pacientes (73 por ciento); con flujo TIMI 1 en 30 enfermos; con TIMI 2 en 97 y TIMI 3 en 148 y en 102 pacientes existió oclusión total de la arteria. En los infartos de localización anterior las arritmias de reperfución que se presentaron con mayor frecuencia con arteria permeable ventricular no rápida y la taquicardia ventricular (54 por ciento). La fibrilación ventricular se presentó en seis pacientes, de éstos en cinco con flujo TIMI 2 o 3. En los infartos de localización inferior, se observó la extrasistolia ventricular y la taquicardia ventricular no rápida en el 25 por ciento. En los pacientes en los que se observó permeabilidad de la arteria, existió una disminución del desnivel del segmento ST significativa en 159 enfermos (42 por ciento) y existió lavado enzimático en 191 pacientes (51 por ciento). De los enfermos en los que se demostró oclusión total de la arteria, 21 (30 por ciento) cursaron con disfunción ventricular izquierda y de éstos, seis evolucionaron hacia el choque cardiogénico. De los sujetos en los que se observó permeabilidad del vaso, sólo el 2 por ciento presentó choque cardiogénico. La mortalidad se relacionó con mayor frecuencia a IAM anterior y a la oclusión completa de la arteria. Por lo que el análisis de la evolución clínica es el marcador que más orienta a realizar arterografía coronaria temprana en aquellos enfermos donde la evolución no sea favorable, con miras a buscar otras alternativas terapeúticas


Subject(s)
Humans , Male , Female , Middle Aged , Coronary Vessels/physiopathology , Electrocardiography , Myocardial Infarction/drug therapy , Myocardial Infarction/physiopathology , Myocardial Reperfusion , Thrombolytic Therapy
SELECTION OF CITATIONS
SEARCH DETAIL
...