RESUMEN
BACKGROUND: In animal models, the mammalian target of rapamycin inhibitors (mTORIs) may prevent atherogenesis by the regulation of homeostasis of cholesterol and by a reduced inflammatory response. The aim of this study is to compare the carotid intima-media thickness (cIMT) between de novo tacrolimus/mycophenolate and tacrolimus/sirolimus at low doses. The cIMT is considered a surrogate marker of atherosclerosis. METHODS: We evaluated cIMT at baseline and at 6 and 12 months after kidney transplantation in a database derived from a previously published trial. That trial had prospectively randomly assigned kidney transplant recipients older than 60 years of age to one of two groups: tacrolimus/sirolimus (n = 21) or tacrolimus/mycophenolate (n = 23). The cIMT was evaluated by using ultrasound in the common carotid artery wall on both sides. RESULTS: The total and high-density lipoprotein cholesterol levels were higher in the sirolimus group at 6 and 12 months. The cIMT decreased over time at 6 and 12 months in the sirolimus group (P = 0.012); this decrease continued to be significant in a model adjusted for age, sex, presence of diabetes, statin use and smoking. CONCLUSIONS: The use of sirolimus plus tacrolimus de novo in kidney transplantation is associated with a reduction in cIMT after 12 months, a decrease more significant than seen with the combination of mycophenolate plus tacrolimus. This suggests a class effect of mTORI in the prevention of atherosclerosis.
Asunto(s)
Delirio/diagnóstico , Mareo/diagnóstico , Disnea/diagnóstico , Accidente Cerebrovascular/diagnóstico , Anciano de 80 o más Años , Diagnóstico Diferencial , Mareo/complicaciones , Disnea/complicaciones , Servicio de Urgencia en Hospital , Femenino , Humanos , Multimorbilidad , Enfermedades Raras , Medición de Riesgo , Accidente Cerebrovascular/terapia , SíndromeRESUMEN
BACKGROUND: The effects of modern therapy on functional recovery after acute myocardial infarction (AMI) are unknown. OBJECTIVES: To evaluate the predictors of systolic functional recovery after anterior wall AMI in patients undergoing modern therapy (reperfusion, aggressive platelet antiaggregant therapy, angiotensin-converting enzyme inhibitors and beta-blockers). METHODS: A total of 94 consecutive patients with AMI with ST-segment elevation were enrolled. Echocardiograms were performed during the in-hospital phase and after 6 months. Systolic dysfunction was defined as ejection fraction value < 50%. RESULTS: In the initial echocardiogram, 64% of patients had systolic dysfunction. Patients with ventricular dysfunction had greater infarct size, assessed by the measurement of total and isoenzyme MB creatine kinase enzymes, than patients without dysfunction. Additionally, 24.5% of patients that initially had systolic dysfunction showed recovery within 6 months after AMI. Patients who recovered ventricular function had smaller infarct sizes, but larger values of ejection fraction and E-wave deceleration time than patients without recovery. At the multivariate analysis, it can be observed that infarct size was the only independent predictor of functional recovery after 6 months of AMI when adjusted for age, gender, ejection fraction and E-wave deceleration time. CONCLUSION: In spite of aggressive treatment, systolic ventricular dysfunction remains a frequent event after the anterior wall myocardial infarction. Additionally, 25% of patients show functional recovery. Finally, infarct size was the only significant predictor of functional recovery after six months of acute myocardial infarction.
Asunto(s)
Infarto del Miocardio/fisiopatología , Infarto del Miocardio/rehabilitación , Recuperación de la Función , Sístole/fisiología , Disfunción Ventricular Izquierda/fisiopatología , Disfunción Ventricular Izquierda/rehabilitación , Anciano , Ecocardiografía , Femenino , Humanos , Modelos Logísticos , Masculino , Persona de Mediana Edad , Infarto del Miocardio/patología , Valores de Referencia , Factores de Riesgo , Sensibilidad y Especificidad , Estadísticas no Paramétricas , Volumen Sistólico/fisiología , Factores de Tiempo , Resultado del TratamientoRESUMEN
Background: The effects of modern therapy on functional recovery after acute myocardial infarction (AMI) are unknown. Objectives: To evaluate the predictors of systolic functional recovery after anterior wall AMI in patients undergoing modern therapy (reperfusion, aggressive platelet antiaggregant therapy, angiotensin-converting enzyme inhibitors and beta-blockers). Methods: A total of 94 consecutive patients with AMI with ST-segment elevation were enrolled. Echocardiograms were performed during the in-hospital phase and after 6 months. Systolic dysfunction was defined as ejection fraction value < 50%. Results: In the initial echocardiogram, 64% of patients had systolic dysfunction. Patients with ventricular dysfunction had greater infarct size, assessed by the measurement of total and isoenzyme MB creatine kinase enzymes, than patients without dysfunction. Additionally, 24.5% of patients that initially had systolic dysfunction showed recovery within 6 months after AMI. Patients who recovered ventricular function had smaller infarct sizes, but larger values of ejection fraction and E-wave deceleration time than patients without recovery. At the multivariate analysis, it can be observed that infarct size was the only independent predictor of functional recovery after 6 months of AMI when adjusted for age, gender, ejection fraction and E-wave deceleration time. Conclusion: In spite of aggressive treatment, systolic ventricular dysfunction remains a frequent event after the anterior wall myocardial infarction. Additionally, 25% of patients show functional recovery. Finally, infarct size was the only significant predictor of functional recovery after six months of acute myocardial infarction. .
Fundamento: Os efeitos da terapêutica moderna na recuperação funcional após o infarto agudo do miocárdio não são conhecidos. Objetivos: Avaliar os fatores preditores da recuperação funcional sistólica após infarto agudo do miocárdio de parede anterior em pacientes submetidos à terapia moderna (reperfusão, antiagregação plaquetária agressiva, inibidores da enzima conversora da angiotensina e betabloqueadores). Métodos: Foram incluídos 94 pacientes consecutivos com infarto agudo do miocárdio com supradesnivelamento do segmento ST. Ecocardiogramas foram realizados na fase intra-hospitalar e após 6 meses. Disfunção sistólica foi definida pela presença de fração de ejeção de valor < 50%. Resultados: No ecocardiograma inicial, 64% dos pacientes apresentaram disfunção sistólica. Os pacientes com disfunção ventricular apresentaram tamanhos maiores de infarto, avaliados pelas enzimas creatinofosfoquinase total e isoenzima MB, que os pacientes sem disfunção. Adicionalmente, 24,5% dos pacientes inicialmente com disfunção sistólica apresentaram recuperação no período de 6 meses após o infarto agudo do miocárdio. Os pacientes que recuperaram a função ventricular apresentaram menores tamanhos de infarto, mas maiores valores da fração de ejeção e tempo de desaceleração da onda E que pacientes sem recuperação. Na análise multivariada, observa-se que o tamanho de infarto foi o único fator preditor independente de recuperação funcional após 6 meses de infarto, quando ajustado pela idade, sexo, fração de ejeção e tempo de desaceleração da onda E. Conclusão: Apesar do tratamento agressivo, a disfunção ventricular ...
Asunto(s)
Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Infarto del Miocardio/fisiopatología , Infarto del Miocardio/rehabilitación , Recuperación de la Función , Sístole/fisiología , Disfunción Ventricular Izquierda/fisiopatología , Disfunción Ventricular Izquierda/rehabilitación , Ecocardiografía , Modelos Logísticos , Infarto del Miocardio/patología , Valores de Referencia , Factores de Riesgo , Sensibilidad y Especificidad , Estadísticas no Paramétricas , Volumen Sistólico/fisiología , Factores de Tiempo , Resultado del TratamientoRESUMEN
FUNDAMENTO: A relevância do padrão de geometria após o infarto do miocárdio não é conhecida. OBJETIVOS: Analisar a presença de diferentes padrões de geometria ventricular esquerda (VE) e seu impacto como preditor de remodelação em pacientes com infarto do miocárdio. MÉTODOS: Pacientes com infarto agudo anterior (n = 80) foram divididos de acordo com o padrão de geometria: normal (índice de massa [IMVE] normal e espessura relativa da parede [ERP] normal), remodelação concêntrica (IMVE normal e ERP aumentada), hipertrofia concêntrica (IMVE e ERP aumentadas) e hipertrofia excêntrica (IMVE aumentado e ERP normal). Após seis meses, foi repetido o ecocardiograma. RESULTADOS: Quatro pacientes foram a óbito. Dos sobreviventes, 41 apresentaram remodelação (R+), enquanto 39 não remodelaram (R-). Considerando-se o padrão geométrico, houve a seguinte distribuição: 24 pacientes com padrão normal, 13 com remodelação concêntrica, 29 com hipertrofia concêntrica e 14 com hipertrofia excêntrica. Os pacientes que remodelaram apresentaram maiores tamanhos de infarto analisados pelo pico da CPK (R+ = 4.610 (1.688 - 7.970), R- = 1.442 (775 - 4.247), p < 0,001) e da CK-MB (R+ = 441 (246 - 666), R- = 183 (101 - 465), p < 0,001), tendência a maior prevalência de remodelação concêntrica (R+ = 10, R- = 3, p = 0,08) e menor prevalência de hipertrofia excêntrica (R+ = 2, R- = 12, p = 0,006). Na análise de regressão multivariada, o tamanho do infarto foi preditor (OR = 1,01; p = 0,020) e a hipertrofia excêntrica foi fator protetor (OR = 0,189; p = 0,046) de remodelação ventricular após a oclusão coronariana. CONCLUSÃO: O padrão de geometria ventricular pode ter impacto no processo de remodelação em pacientes com infarto do miocárdio.
BACKGROUND: The relevance of left ventricular (LV) geometric pattern after myocardial infarction is not known. OBJECTIVES: To analyze the presence of different LV geometric patterns and teir impact as a predictor of remodeling in patients with myocardial infarction. METHODS: Patients with anterior acute myocardial infarction (n = 80) were divided according to the geometric pattern: normal (normal left ventricular mass index [LVMI] and normal relative wall thickness [RWT]), concentric remodeling (normal LVMI and increased RWT), concentric hypertrophy (increased LVMI and RWT) and eccentric hypertrophy (increased LVMI and normal RWT). After six months, echocardiographic assessment was repeated. RESULTS: Four patients died. Of the survivors, 41 showed remodeling (R +), whereas 39 did not (R-). Considering the geometric pattern, the cases were distributed as follows: 24 patients with normal pattern, 13 with concentric remodeling, 29 with concentric hypertrophy and 14 with eccentric hypertrophy. Patients who showed remodeling had larger infarction sizes analyzed by peak CPK (R + = 4,610 (1,688-7,970), R- = 1,442 (775-4247), p <0.001) and CK-MB (R + = 441 (246 - 666), R- = 183 (101-465), p <0.001), trend towards higher prevalence of concentric remodeling (R+ = 10, R- = 3, p = 0.08) and lower prevalence of eccentric hypertrophy (R + = 2 R- = 12, p = 0.006). In the multivariate regression analysis, infarction size was a predictor (OR = 1.01, p = 0.020) and eccentric hypertrophy was a protective factor (OR = 0.189, p = 0.046) of ventricular remodeling after coronary occlusion. CONCLUSION: The LV geometric pattern of can have an impact on the remodeling process in patients with myocardial infarction.
Asunto(s)
Adulto , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Infarto de la Pared Anterior del Miocardio/fisiopatología , Ventrículos Cardíacos/fisiopatología , Remodelación Ventricular/fisiología , Factores de Edad , Infarto de la Pared Anterior del Miocardio , Ecocardiografía , Ventrículos Cardíacos , Hipertrofia Ventricular Izquierda/fisiopatología , Hipertrofia Ventricular Izquierda , Valor Predictivo de las Pruebas , Estudios Prospectivos , Factores de Riesgo , Factores SexualesRESUMEN
BACKGROUND: The relevance of left ventricular (LV) geometric pattern after myocardial infarction is not known. OBJECTIVES: To analyze the presence of different LV geometric patterns and their impact as a predictor of remodeling in patients with myocardial infarction. METHODS: Patients with anterior acute myocardial infarction (n = 80) were divided according to the geometric pattern: normal (normal left ventricular mass index [LVMI] and normal relative wall thickness [RWT]), concentric remodeling (normal LVMI and increased RWT), concentric hypertrophy (increased LVMI and RWT) and eccentric hypertrophy (increased LVMI and normal RWT). After six months, echocardiographic assessment was repeated. RESULTS: Four patients died. Of the survivors, 41 showed remodeling (R +), whereas 39 did not (R-). Considering the geometric pattern, the cases were distributed as follows: 24 patients with normal pattern, 13 with concentric remodeling, 29 with concentric hypertrophy and 14 with eccentric hypertrophy. Patients who showed remodeling had larger infarction sizes analyzed by peak CPK (R + = 4,610 (1,688-7,970), R- = 1,442 (775-4247), p <0.001) and CK-MB (R + = 441 (246 - 666), R- = 183 (101-465), p <0.001), trend towards higher prevalence of concentric remodeling (R+ = 10, R- = 3, p = 0.08) and lower prevalence of eccentric hypertrophy (R + = 2 R- = 12, p = 0.006). In the multivariate regression analysis, infarction size was a predictor (OR = 1.01, p = 0.020) and eccentric hypertrophy was a protective factor (OR = 0.189, p = 0.046) of ventricular remodeling after coronary occlusion. CONCLUSION: The LV geometric pattern of can have an impact on the remodeling process in patients with myocardial infarction.
Asunto(s)
Infarto de la Pared Anterior del Miocardio/fisiopatología , Ventrículos Cardíacos/fisiopatología , Remodelación Ventricular/fisiología , Adulto , Factores de Edad , Anciano , Infarto de la Pared Anterior del Miocardio/diagnóstico por imagen , Ecocardiografía , Femenino , Ventrículos Cardíacos/diagnóstico por imagen , Humanos , Hipertrofia Ventricular Izquierda/diagnóstico por imagen , Hipertrofia Ventricular Izquierda/fisiopatología , Masculino , Persona de Mediana Edad , Valor Predictivo de las Pruebas , Estudios Prospectivos , Factores de Riesgo , Factores SexualesRESUMEN
BACKGROUND: Aging is associated with changes in cardiac structure and function that are associated with left ventricular diastolic dysfunction. Whether diastolic functional alterations during senescence are manifestations of the intrinsic aging process or related to cardiac adaptations to a more sedentary lifestyle is still unsettled. This was a prospective study evaluating the effects of a 6-month combined exercise training period on functional capacity and diastolic function in sedentary elderly patients with controlled arterial hypertension. MATERIAL/METHODS: Functional capacity was assessed by exercise stress test and muscle strength was evaluated by the one-repetition maximum test. Cardiac structures and function were analyzed by transthoracic echocardiography. RESULTS: Fifteen patients, 68±8 years old, completed the training program. Exercise training significantly improved physical capacity (distance walked: 551±92 vs. 630±153 m, P<0.05; work load: 7.2±1.7 vs. 8.5±3.0 METs, P<0.05) and upper and lower extremity muscle strength (P<0.001). Arterial blood pressure significantly decreased after training (systolic blood pressure: 134±9 vs. 128±8 mmHg; diastolic blood pressure: 82±7 vs. 77±6 mmHg; P<0.05). Cardiac structures and left and right systolic and diastolic function did not change after combined training (P>0.05). CONCLUSIONS: Combined and supervised training for a 6-month period increases physical capacity and muscle strength in elderly patients with controlled arterial hypertension without changing resting left ventricular diastolic function.