Your browser doesn't support javascript.
Mostrar: 20 | 50 | 100
Resultados 1 - 7 de 7
Mais filtros

Intervalo de ano de publicação
Int J Cardiovasc Imaging ; 34(4): 553-560, 2018 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-29098525


Heart failure (HF) is associated with morbidity and mortality. Real-time three-dimensional echocardiography (RT3DE) may offer additional prognostic data in patients with HF. The study aimed to evaluate the prognostic value of real-time three-dimensional echocardiography (RT3DE). This is a prospective study that included 89 patients with HF and left ventricular ejection fraction (LVEF) < 0.50 who were followed for 48 months. Left atrium and ventricular volumes and functions were evaluated by RT3DE. TDI and two-dimensional echocardiography parameters were also obtained. The endpoint was a composite of death, heart transplantation and hospitalization for acute decompensated HF. The mean age was 55 ± 11 years, and the LVEF was 0.32 ± 0.10. The composite endpoint occurred in 49 patients (18 deaths, 30 hospitalizations, one heart transplant). Patients with outcomes had greater left atrial volume (40 ± 16 vs. 32 ± 12 mL/m2; p < 0.01) and right ventricle diameter (41 ± 9 vs. 37 ± 8 mm, p = 0.01), worse total emptying fraction of the left atrium (36 ± 13% vs. 41 ± 11%; p = 0.03), LVEF (0.30 ± 0.09 vs. 0.34 ± 0.11; p = 0.02), right ventricle fractional area change (34.8 ± 12.1% vs. 39.2 ± 11.3%; p = 0.04), and greater E/e' ratio (19 ± 9 vs. 16 ± 8; p = 0.04) and systolic pulmonary artery pressure (SPAP) (50 ± 15 vs. 36 ± 11 mmHg; p < 0.01). In multivariate analysis, LVEF (OR 4.6; CI 95% 1.2-17.6; p < 0.01) and SPAP (OR 12.5; CI 95% 1.8-86.9; p < 0.01) were independent predictors of patient outcomes. LVEF and the SPAP were independent predictors of outcomes in patients with HF.

Ecocardiografia Doppler em Cores , Ecocardiografia Tridimensional , Insuficiência Cardíaca Sistólica/diagnóstico por imagem , Hemodinâmica , Adulto , Idoso , Área Sob a Curva , Intervalo Livre de Doença , Feminino , Insuficiência Cardíaca Sistólica/mortalidade , Insuficiência Cardíaca Sistólica/fisiopatologia , Insuficiência Cardíaca Sistólica/terapia , Humanos , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Variações Dependentes do Observador , Razão de Chances , Valor Preditivo dos Testes , Estudos Prospectivos , Curva ROC , Reprodutibilidade dos Testes , Fatores de Risco , Volume Sistólico , Fatores de Tempo , Função Ventricular Esquerda
In. Kalil Filho, Roberto; Fuster, Valetim; Albuquerque, Cícero Piva de. Medicina cardiovascular reduzindo o impacto das doenças / Cardiovascular medicine reducing the impact of diseases. São Paulo, Atheneu, 2016. p.73-88.
Monografia em Português | LILACS | ID: biblio-971529
Sleep Med ; 16(8): 971-5, 2015 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-26071851


INTRODUCTION: The sleep of patients admitted to coronary care unit (CCU) may be compromised. A feasible and cost-effective tool to evaluate sleep in this scenario could provide important data. The aim of this study was to evaluate sleep with a questionnaire developed specifically for the CCU and to validate it with polysomnography (PSG). METHODS: Ninety-nine patients (68% male; 56 ± 10 years old) with acute coronary syndrome were included. PSG was performed within 36 h of admission. A specific 18-question questionnaire (CCU questionnaire) was developed and applied after the PSG. Cronbach's alpha test was used to validate the questionnaire. The Spearman test was used to analyze the correlation between the PSG variables and the questionnaire, and the Kruskal-Wallis test was used to compare the PSG variables among patients with good, regular, or poor sleep. RESULTS: The total sleep time was 265 ± 81 min, sleep efficiency 62 ± 18%, REM sleep 10 ± 7%, apnea/hypopnea index 15 ± 23, and the arousal index 24 ± 15. Cronbach's alpha test was 0.69. The CCU questionnaire showed correlation with the sleep efficiency evaluated by PSG (r: 0.52; p < 0.001). Sleep quality was divided into three categories according to the CCU questionnaire: patients with good sleep had a sleep efficiency of 72 ± 9%, better than those with a regular or poor sleep (60 ± 16% and 53 ± 20%, respectively; p < 0.01). CONCLUSION: The CCU questionnaire is a feasible and reliable tool to evaluate sleep in the CCU, showing correlation with the PSG sleep efficiency.

Unidades de Cuidados Coronarianos , Transtornos do Sono-Vigília/diagnóstico , Síndrome Coronariana Aguda/complicações , Síndrome Coronariana Aguda/terapia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Polissonografia , Reprodutibilidade dos Testes , Sono , Transtornos do Sono-Vigília/etiologia , Sono REM , Inquéritos e Questionários/normas
Echocardiography ; 32(10): 1455-62, 2015 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-25604804


INTRODUCTION: Training requirements for general cardiologists without echocardiographic expertise to perform focused cardiac ultrasound (FCU) with portable devices have not yet been defined. The objective of this study was to evaluate a training program to instruct cardiology residents to perform FCU with a hand-carried device (HCD) in different clinical settings. METHODS: Twelve cardiology residents were subjected to a 50-question test, 4 lectures on basic echocardiography and imaging interpretation, the supervised interpretation of 50 echocardiograms and performance of 30 exams using HCD. After this period, they repeated the written test and were administered a practical test comprising 30 exams each (360 patients) in different clinical settings. They reported on 15 parameters and a final diagnosis; their findings were compared to the HCD exam of a specialist in echocardiography. RESULTS: The proportion of correct answers on the theoretical test was higher after training (86%) than before (51%; P = 0.001). The agreement was substantial among the 15 parameters analyzed (kappa ranging from 0.615 to 0.891; P < 0.001). The percentage of correct interpretation was lower for abnormal (75%) than normal (95%) items, for valve abnormalities (85%) compared to other items (92%) and for graded scale (87%) than for dichotomous (95%) items (P < 0.0001, for all). For the final diagnoses, the kappa value was higher than 0.941 (P < 0.001; 95% CI [0.914, 0.955]). CONCLUSION: The training proposed enabled residents to perform FCU with HCD, and their findings were in good agreement with those of a cardiologist specialized in echocardiography.

Cardiologia/educação , Ecocardiografia/instrumentação , Ecocardiografia/normas , Educação de Pós-Graduação em Medicina , Sistemas Automatizados de Assistência Junto ao Leito , Competência Clínica , Currículo , Avaliação Educacional , Feminino , Humanos , Internato e Residência , Masculino , Pessoa de Meia-Idade , Avaliação de Programas e Projetos de Saúde
Echocardiography ; 31(3): 265-72, 2014 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-24111730


The left atrial volume index (LAVI) is a biomarker of diastolic dysfunction and a predictor of cardiovascular events. Three-dimensional echocardiography (3DE) is highly accurate for LAVI measurements but is not widely available. Furthermore, biplane two-dimensional echocardiography (B2DE) may occasionally not be feasible due to a suboptimal two-chamber apical view. Simplified single plane two-dimensional echocardiography (S2DE) could overcome these limitations. We aimed to compare the reliability of S2DE with other validated echocardiographic methods in the measurement of the LAVI. We examined 143 individuals (54 ± 13 years old; 112 with heart disease and 31 healthy volunteers; all with sinus rhythm, with a wide range of LAVI). The results for all the individuals were compared with B2DE-derived LAVIs and validated using 3DE. The LAVIs, as determined using S2DE (32.7 ± 13.1 mL/m(2)), B2DE (31.9 ± 12.7 mL/m(2)), and 3DE (33.1 ± 13.4 mL/m(2)), were not significantly different from each other (P = 0.85). The S2DE-derived LAVIs correlated significantly with those obtained using both B2DE (r = 0.98; P < 0.001) and 3DE (r = 0.93; P < 0.001). The mean difference between the S2DE and B2DE measurements was <1.0 mL/m(2). Using the American Society of Echocardiography criteria for grading LAVI enlargement (normal, mild, moderate, severe), we observed an excellent agreement between the S2DE- and B2DE-derived classifications (κ = 0.89; P < 0.001). S2DE is a simple, rapid, and reliable method for LAVI measurement that may expand the use of this important biomarker in routine echocardiographic practice.

Ecocardiografia Tridimensional/métodos , Átrios do Coração/diagnóstico por imagem , Interpretação de Imagem Assistida por Computador , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Estudos de Casos e Controles , Estudos de Coortes , Ecocardiografia/métodos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Variações Dependentes do Observador , Tamanho do Órgão , Valores de Referência , Reprodutibilidade dos Testes , Sensibilidade e Especificidade , Adulto Jovem
J Am Soc Echocardiogr ; 24(5): 526-32, 2011 May.
Artigo em Inglês | MEDLINE | ID: mdl-21353762


BACKGROUND: Although there is anatomopathologic evidence of atrial involvement in Chagas cardiomyopathy (CCM), the impact in left atrial (LA) function is unknown. The aim of this study was to evaluate LA function in patients with CCM with real-time three-dimensional echocardiography (RT3DE) and to compare it with patients with idiopathic dilated cardiomyopathy (DCM). METHODS: A total of 30 patients with CCM, 30 patients with DCM, and 20 normal subjects used as the control group were studied. With the use of RT3DE, we measured LA maximum (maxLAV), minimum, and pre-atrial contraction volumes and calculated total and active LA emptying fractions. RESULTS: Left ventricular ejection fraction and mitral regurgitation were similar in both groups. MaxLAV/m(2) was larger in the CCM group than in the DCM group (76.9 ± 21.9 mL vs. 59.1 ± 26.0 mL; P < .01), and both were significantly larger than in the control group (P < .01). Total LA emptying fraction was lower in the CCM group than in the DCM group (0.30 ± 0.10 vs. 0.40 ± 0.12; P < .01), and both were lower than in the control group (P = .01). Active LA emptying fraction was also lower in the CCM group than in the DCM group (0.22 ± 0.09 vs. 0.28 ± 0.11; P < .01), and both were lower than in the control group (P = .01). The E/e' ratio was higher in the CCM group than in the DCM group (21 ± 10 vs. 15 ± 6; P < .01), and both were greater than in the control group (P < .01). In a multiple regression model, the E/e' ratio was the only independent predictor of a worsening active LA emptying fraction. CONCLUSION: LA function is more compromised in patients with CCM than in patients with DCM. This finding indicates a more diffuse and severe myocardial impairment in Chagas disease that is probably related to increased left ventricular filling pressures and atrial myopathy.

Função do Átrio Esquerdo , Cardiomiopatia Dilatada/diagnóstico por imagem , Cardiomiopatia Chagásica/diagnóstico por imagem , Sistemas Computacionais , Átrios do Coração/diagnóstico por imagem , Cardiomiopatia Dilatada/patologia , Estudos de Casos e Controles , Cardiomiopatia Chagásica/patologia , Feminino , Átrios do Coração/patologia , Frequência Cardíaca , Humanos , Masculino , Pessoa de Meia-Idade , Insuficiência da Valva Mitral/diagnóstico por imagem , Insuficiência da Valva Mitral/patologia , Análise Multivariada , Prognóstico , Medição de Risco/métodos , Índice de Gravidade de Doença , Volume Sistólico , Fatores de Tempo , Ultrassonografia , Função Ventricular Esquerda
Rev. bras. ecocardiogr. imagem cardiovasc ; 22(2): 40-48, abr.-jun. 2009. ilus, tab
Artigo em Português | LILACS | ID: lil-514954


A detecção e quantificação da dissincronia cardíaca têm papel central na indicação da terapia de ressincronização. O ecocardiograma é o método mais utilizado para esse fim, porém nenhum parâmetro ecocardiografico, até o momento, mostrou superioridade em relação aos demais. Esse artigo visa a enfatizar as vantagens e limitações associadas a cada método, além de propor uma abordagem sequencial na avaliação da sincronia cardíaca.

Humanos , Ecocardiografia Doppler/métodos , Ecocardiografia Doppler , Ecocardiografia/métodos , Ecocardiografia