cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.7513088
title: Predictors for Indication to Catheterization after Myocardial Perfusion Gated Spect

description: Abstract Background: Patients with coronary artery disease with left ventricular dysfunction present higher mortality and are the major beneficiaries of a myocardial revascularization procedure. A previous study showed that left ventricular ejection fraction (LVEF) is a negative determinant for cardiac catheterization (CAT) after myocardial perfusion scintigraphy (MPS). Objective: To determine clinical and scintigraphic factors associated with cardiac catheterization (CAT) indication in patients undergoing myocardial perfusion SPECT (MPS).Population: Patients consecutively submitted to PMC in the period from March 2008 to December 2012. Methods: All patients undergoing MPS during the study were recorded in a data bank, where epidemiological, clinical and scintigraphic data (perfusion scores and LVEF) were recorded. Patients or their attending physicians were contacted by phone semiannually for follow-up. For statistical analysis, univariate analyzes were performed and variables were selected for inclusion in a logistic regression model. Results: 5536 patients were submitted to MPS, of which 643 performed CAT after the examination. This group presents a higher prevalence of males, hypertensive, dyslipidemic and previously revascularized. Patients undergoing CAT have angina more frequently, more extensive ischemia scores and lower LVEF. Only presence of angina (IC 95% 1.2 - 1.7, p &lt; 0.001) and extent of ischemia (95% CI 1.2 - 1.3, p &lt; 0.001) were independent variables for CAT indication. Conclusion: The presence of angina and the extent of ischemia were the main predictors for CAT post-MPS indication while lower LVEF was not an independent predictor.
DOI: 10.6084/m9.figshare.7513607
title: Performance of Diagnostic Tests for Intermediate Probabilities of Coronary Heart Disease: A Decision Making Analysis

description: Abstract Patients with intermediate probability of coronary disease are a diagnostic challenge and it is precisely in this population where the degree of uncertainty is greater that the diagnostic tests have their greater applicability. However, according to the current definition, subjecting to tests a population with a disease probability between 10 and 90% can generate unnecessary tests and misleading results. Knowing the characteristics of each test, as well as risks and benefits of drug treatment for coronary disease and combining this information through diagnostic thresholds brings a new perspective to decision making. To review the origin of the currently recommended concepts of intermediate probability and to determine the thresholds for diagnosis and treatment of noninvasive tests and, based on them, propose a new concept of intermediate probability of coronary disease. Through the bibliographic review, meta-analyses were extracted in which data of sensitivity, specificity, positive and negative likelihood ratio, risks and benefits of the tests and treatment were provided. Using an algorithm developed by Pauker et al. it was possible to obtain the diagnostic and treatment thresholds adjusted for each tests in question. The concept of intermediate probability of coronary disease is quite broad, ranging, according to the authors, between 10 and 90%, 1 and 92%, 15 and 85%, with different rationale. Considering the discriminatory power of each test, risks and treatment benefits, the diagnostic and treatment thresholds were defined for exercise testing (22-58%), eco-stress (10-72%), myocardial scintigraphy (12-80%), nuclear magnetic resonance (16-80%) and coronary angiotomography (6.7-81%). The decision to submit to diagnostic tests should be individualized, taking into account the diagnostic and treatment thresholds of each method in question.
DOI: 10.6084/m9.figshare.7513607.v1
title: Performance of Diagnostic Tests for Intermediate Probabilities of Coronary Heart Disease: A Decision Making Analysis

description: Abstract Patients with intermediate probability of coronary disease are a diagnostic challenge and it is precisely in this population where the degree of uncertainty is greater that the diagnostic tests have their greater applicability. However, according to the current definition, subjecting to tests a population with a disease probability between 10 and 90% can generate unnecessary tests and misleading results. Knowing the characteristics of each test, as well as risks and benefits of drug treatment for coronary disease and combining this information through diagnostic thresholds brings a new perspective to decision making. To review the origin of the currently recommended concepts of intermediate probability and to determine the thresholds for diagnosis and treatment of noninvasive tests and, based on them, propose a new concept of intermediate probability of coronary disease. Through the bibliographic review, meta-analyses were extracted in which data of sensitivity, specificity, positive and negative likelihood ratio, risks and benefits of the tests and treatment were provided. Using an algorithm developed by Pauker et al. it was possible to obtain the diagnostic and treatment thresholds adjusted for each tests in question. The concept of intermediate probability of coronary disease is quite broad, ranging, according to the authors, between 10 and 90%, 1 and 92%, 15 and 85%, with different rationale. Considering the discriminatory power of each test, risks and treatment benefits, the diagnostic and treatment thresholds were defined for exercise testing (22-58%), eco-stress (10-72%), myocardial scintigraphy (12-80%), nuclear magnetic resonance (16-80%) and coronary angiotomography (6.7-81%). The decision to submit to diagnostic tests should be individualized, taking into account the diagnostic and treatment thresholds of each method in question.
DOI: 10.6084/m9.figshare.6273329
title: Cardiovascular Risk Factors in Climacteric Women with Coronary Artery Disease

description: Abstract Background: The increased incidence of cardiovascular disease in women occurs during the climacteric period, especially after menopause. Objective: The aim of this study was to identify risk factors among climacteric women with and without coronary artery disease (CAD). Method: This cross-sectional study was performed in the Catheterization Laboratory at the Federal University Hospital of Maranhão, in the Northeast region of Brazil, between March 2012 and July 2013. We included 31 climacteric women who went to the care center for cardiac catheterization. They were divided into groups after catheterization results: Group I (with DAC) and Group II (without CAD). Statistical analysis: Categorical variables were described by means of frequencies and percentages, numerical variables by mean ± standard deviation or median (Quartile.3 - Quartile.1); the Shapiro-Wilk test was used to verify the normality of quantitative data. Fisher's exact test was used for categorical data comparisons. For continuous data, we used Student's test or the Mann-Whitney for unpaired samples; statistical significance was set at p &lt; 0.05. Results: We evaluated groups with CAD (n = 13) and without CAD (n = 18). The results showed a mean age between the groups of 57.92 ± 5.15 and 51.72 ± 4.63 years, respectively. Among the cardiovascular risk factors, the most prevalent among women with CAD were menopause (84.62%), systemic arterial hypertension (SAH) (69.23%) and sedentary life style (69.23%). Conclusion: We concluded that, in addition to menopause itself, SAH and sedentary lifestyle were the most prevalent cardiovascular risk factors among women with CAD.
DOI: 10.6084/m9.figshare.6273329.v1
title: Cardiovascular Risk Factors in Climacteric Women with Coronary Artery Disease

description: Abstract Background: The increased incidence of cardiovascular disease in women occurs during the climacteric period, especially after menopause. Objective: The aim of this study was to identify risk factors among climacteric women with and without coronary artery disease (CAD). Method: This cross-sectional study was performed in the Catheterization Laboratory at the Federal University Hospital of Maranhão, in the Northeast region of Brazil, between March 2012 and July 2013. We included 31 climacteric women who went to the care center for cardiac catheterization. They were divided into groups after catheterization results: Group I (with DAC) and Group II (without CAD). Statistical analysis: Categorical variables were described by means of frequencies and percentages, numerical variables by mean ± standard deviation or median (Quartile.3 - Quartile.1); the Shapiro-Wilk test was used to verify the normality of quantitative data. Fisher's exact test was used for categorical data comparisons. For continuous data, we used Student's test or the Mann-Whitney for unpaired samples; statistical significance was set at p &lt; 0.05. Results: We evaluated groups with CAD (n = 13) and without CAD (n = 18). The results showed a mean age between the groups of 57.92 ± 5.15 and 51.72 ± 4.63 years, respectively. Among the cardiovascular risk factors, the most prevalent among women with CAD were menopause (84.62%), systemic arterial hypertension (SAH) (69.23%) and sedentary life style (69.23%). Conclusion: We concluded that, in addition to menopause itself, SAH and sedentary lifestyle were the most prevalent cardiovascular risk factors among women with CAD.
DOI: 10.6084/m9.figshare.6272984
title: Prognosis of Dilated Cardiomyopathy with Severe Heart Failure according to Functional Classification Scales in Childhood

description: Abstract Background: Heart failure is the main manifestation of dilated cardiomyopathy in childhood, and the systematic evaluation of signs and symptoms allows monitoring the treatment outcome. Objective: To evaluate the use of three functional classification scales of heart failure in children and adolescents with dilated cardiomyopathy. Methods: Longitudinal and observational study including patients from zero to 18 years with dilated cardiomyopathy and severe initial heart failure. All of them were followed up using the New York Heart Association (NYHA), The New York University Pediatric Heart Failure Index (The NYU PHFI) and Ross version 2012 scales. Statistical analyzes were done using Statistical Package for Social Science, version 14.0, with Mann-Whitney test, Chi-Square test or Fisher's test, application of the Operating Characteristic Curve, Wilcoxon test and Kappa coefficient for comparison of scales and Kaplan-Meier curve for survival evaluation. The level of significance adopted was 5%. Results: A total of 57 patients, aged from 1 to 200 months (mean of 48.7 ± 55.9) and follow-up of 6 to 209 months (mean of 63.6 ± 48.4) were included. There was substantial agreement between the Ross 2012 scales, The NYU PHFI and NYHA (Kappa = 0.71 and 0.82, respectively). Paired analysis by the Wilcoxon test, comparing the scales before and after treatment, was significant (p &lt; 0.0001). The greatest survival was found in patients with class I/II by NYHA or scores lower than 11 points in the others. Conclusion: The use of functional assessment scales of heart failure proved to be useful in the follow-up and evaluation of the therapeutic response and there was no difference between them. Patients who remained in functional classification III or IV NYHA or scores ≥ 11 in Ross 2012 or The NYU PHFI had worse prognosis.
DOI: 10.6084/m9.figshare.6272984.v1
title: Prognosis of Dilated Cardiomyopathy with Severe Heart Failure according to Functional Classification Scales in Childhood

description: Abstract Background: Heart failure is the main manifestation of dilated cardiomyopathy in childhood, and the systematic evaluation of signs and symptoms allows monitoring the treatment outcome. Objective: To evaluate the use of three functional classification scales of heart failure in children and adolescents with dilated cardiomyopathy. Methods: Longitudinal and observational study including patients from zero to 18 years with dilated cardiomyopathy and severe initial heart failure. All of them were followed up using the New York Heart Association (NYHA), The New York University Pediatric Heart Failure Index (The NYU PHFI) and Ross version 2012 scales. Statistical analyzes were done using Statistical Package for Social Science, version 14.0, with Mann-Whitney test, Chi-Square test or Fisher's test, application of the Operating Characteristic Curve, Wilcoxon test and Kappa coefficient for comparison of scales and Kaplan-Meier curve for survival evaluation. The level of significance adopted was 5%. Results: A total of 57 patients, aged from 1 to 200 months (mean of 48.7 ± 55.9) and follow-up of 6 to 209 months (mean of 63.6 ± 48.4) were included. There was substantial agreement between the Ross 2012 scales, The NYU PHFI and NYHA (Kappa = 0.71 and 0.82, respectively). Paired analysis by the Wilcoxon test, comparing the scales before and after treatment, was significant (p &lt; 0.0001). The greatest survival was found in patients with class I/II by NYHA or scores lower than 11 points in the others. Conclusion: The use of functional assessment scales of heart failure proved to be useful in the follow-up and evaluation of the therapeutic response and there was no difference between them. Patients who remained in functional classification III or IV NYHA or scores ≥ 11 in Ross 2012 or The NYU PHFI had worse prognosis.
DOI: 10.6084/m9.figshare.6273236
title: Overview with Meta-analysis of Systematic Reviews of the Diagnostic and Prognostic Value of Coronary Computed Tomography Angiography in the Emergency Department

description: Abstract Background: The high prevalence of CAD, as well as your impact on health expenditure and the various treatment options to reduce morbidity and mortality related to CAD, comes to develop a diagnostic tool precis and with important findings in the Emergency Department. Objetive: To conduct an overview with meta-analysis to compile evidence from multiple systematic reviews (SR) on the diagnostic and prognostic value of coronary computed tomography angiography (CCTA) to assess acute chest pain in the emergency department (ED). Methods: We included SR of primary studies that evaluated the diagnostic and prognostic value of CCTA ≥ 64 channels in the ED. The studies were conducted in patients at low and intermediate risk for coronary artery disease (CAD). Quality assessment was performed using PRISMA and approved reviews that scored ≥ 80%. Two authors independently extracted data using a standardized form. Spearman correlation test, Chi-square test, Cochran's Q test or Higgins and Thompson statistical I2 were used. For meta-analysis, "mada" package statistical software R Core Team, 2015, was used. The significance level adopted was 95%. Results: Four reviews were eligible for inclusion in this overview, resulting in 13 articles after applying the exclusion criteria, and only 10 of these were used for meta-analysis, adding up to a total of 4831 patients (mean age, 54 ± 6 years; 51% male), of whom 46% were hypertensive, 32% had dyslipidemia, 13% had diabetes and 26% had a family history of premature CAD. In the meta-analysis, 9 studies defined CCTA positive in the presence of luminal lesions ≥ 50%, while 1 study defined it as luminal lesions ≥ 70%. Sensitivity ranged from 77% to 98%, and specificity, from 73% to 100%. The univariate analysis showed homogeneity of diagnostic odds ratio (DOR) [Q = 8.5 (df = 9), p = 0.48 and I2 = 0%]. The pooled mean DOR for CCTA in primary analyses was 4.33 (95% CI: 3.47 - 5.18). The area under the curve (AUC) was 0.982 (95% CI: 0.967 - 0.999). There was no death, 29 (0.6%) infarcts, 92 (1.9%) revascularizations and 312 (6.4%) invasive coronary angiographies. The diagnosis of acute coronary syndrome occurred in 7.3% of the 1655 patients included in the meta-analysis. Conclusions: The use of CCTA as a tool for stratification of patients at low or intermediate cardiovascular risk, who are in the ED with chest pain, has high accuracy, safety, reduces length of hospital stay and probably the costs, producing an early diagnosis and more effective decision making. (Int J Cardiovasc Sci. 2017; [online].ahead print, PP.0-0)
DOI: 10.6084/m9.figshare.6273236.v1
title: Overview with Meta-analysis of Systematic Reviews of the Diagnostic and Prognostic Value of Coronary Computed Tomography Angiography in the Emergency Department

description: Abstract Background: The high prevalence of CAD, as well as your impact on health expenditure and the various treatment options to reduce morbidity and mortality related to CAD, comes to develop a diagnostic tool precis and with important findings in the Emergency Department. Objetive: To conduct an overview with meta-analysis to compile evidence from multiple systematic reviews (SR) on the diagnostic and prognostic value of coronary computed tomography angiography (CCTA) to assess acute chest pain in the emergency department (ED). Methods: We included SR of primary studies that evaluated the diagnostic and prognostic value of CCTA ≥ 64 channels in the ED. The studies were conducted in patients at low and intermediate risk for coronary artery disease (CAD). Quality assessment was performed using PRISMA and approved reviews that scored ≥ 80%. Two authors independently extracted data using a standardized form. Spearman correlation test, Chi-square test, Cochran's Q test or Higgins and Thompson statistical I2 were used. For meta-analysis, "mada" package statistical software R Core Team, 2015, was used. The significance level adopted was 95%. Results: Four reviews were eligible for inclusion in this overview, resulting in 13 articles after applying the exclusion criteria, and only 10 of these were used for meta-analysis, adding up to a total of 4831 patients (mean age, 54 ± 6 years; 51% male), of whom 46% were hypertensive, 32% had dyslipidemia, 13% had diabetes and 26% had a family history of premature CAD. In the meta-analysis, 9 studies defined CCTA positive in the presence of luminal lesions ≥ 50%, while 1 study defined it as luminal lesions ≥ 70%. Sensitivity ranged from 77% to 98%, and specificity, from 73% to 100%. The univariate analysis showed homogeneity of diagnostic odds ratio (DOR) [Q = 8.5 (df = 9), p = 0.48 and I2 = 0%]. The pooled mean DOR for CCTA in primary analyses was 4.33 (95% CI: 3.47 - 5.18). The area under the curve (AUC) was 0.982 (95% CI: 0.967 - 0.999). There was no death, 29 (0.6%) infarcts, 92 (1.9%) revascularizations and 312 (6.4%) invasive coronary angiographies. The diagnosis of acute coronary syndrome occurred in 7.3% of the 1655 patients included in the meta-analysis. Conclusions: The use of CCTA as a tool for stratification of patients at low or intermediate cardiovascular risk, who are in the ED with chest pain, has high accuracy, safety, reduces length of hospital stay and probably the costs, producing an early diagnosis and more effective decision making. (Int J Cardiovasc Sci. 2017; [online].ahead print, PP.0-0)
DOI: 10.6084/m9.figshare.6273092
title: Evolution of Mortality from Diseases of the Circulatory System and of Gross Domestic Product per Capita in the Rio de Janeiro State Municipalities

description: Abstract Background: Diseases of the circulatory system are the leading cause of death in Brazil and the world, falling progressively during the twentieth century, preceded by an increase in Gross Domestic Product. Objective: To correlate balanced and adjusted mortality rates from circulatory system diseases in the municipalities of Rio de Janeiro state between 1979 and 2010 with the gross domestic product per capita (GDPpc) beginning in 1950. Methods: Population and death data were obtained from the Department of Information and Computer Services at the National Health System/Brazilian Ministry of Health (Departamento de Informática do Sistema Único de Saúde - Ministério da Saúde - DATASUS-MS). Mortality rates were calculated for Ischemic Heart Disease (IHD), Cerebrovascular Disease (CBVD), and Circulatory System Disease (CSD); adjusted by the direct method; and balanced for ill-defined causes. The GDPpc data were obtained from the Institute of Applied Economic Research (Instituto de Pesquisas Econômicas Aplicadas - IPEA). Mortality rates were correlated with socioeconomic indicators using Pearson's linear correlation coefficient to determine the annual optimized lag time. Regression slope coefficients between the dependent disease and independent socioeconomic indicator were estimated. Results: In recent decades, there has been a reduction in mortality from CSD in all Rio de Janeiro state municipalities, mainly due to a decline in mortality from CBVD. The decline in mortality from CSD was preceded by an increase in the GDPpc, and a strong correlation was observed between this index and mortality rates. Conclusion: The evolution of the variation in GDPpc demonstrated a strong correlation with the reduction in CSD mortality. This relationship demonstrates the importance of improving the living conditions of the population to reduce cardiovascular mortality.
DOI: 10.6084/m9.figshare.6273092.v1
title: Evolution of Mortality from Diseases of the Circulatory System and of Gross Domestic Product per Capita in the Rio de Janeiro State Municipalities

description: Abstract Background: Diseases of the circulatory system are the leading cause of death in Brazil and the world, falling progressively during the twentieth century, preceded by an increase in Gross Domestic Product. Objective: To correlate balanced and adjusted mortality rates from circulatory system diseases in the municipalities of Rio de Janeiro state between 1979 and 2010 with the gross domestic product per capita (GDPpc) beginning in 1950. Methods: Population and death data were obtained from the Department of Information and Computer Services at the National Health System/Brazilian Ministry of Health (Departamento de Informática do Sistema Único de Saúde - Ministério da Saúde - DATASUS-MS). Mortality rates were calculated for Ischemic Heart Disease (IHD), Cerebrovascular Disease (CBVD), and Circulatory System Disease (CSD); adjusted by the direct method; and balanced for ill-defined causes. The GDPpc data were obtained from the Institute of Applied Economic Research (Instituto de Pesquisas Econômicas Aplicadas - IPEA). Mortality rates were correlated with socioeconomic indicators using Pearson's linear correlation coefficient to determine the annual optimized lag time. Regression slope coefficients between the dependent disease and independent socioeconomic indicator were estimated. Results: In recent decades, there has been a reduction in mortality from CSD in all Rio de Janeiro state municipalities, mainly due to a decline in mortality from CBVD. The decline in mortality from CSD was preceded by an increase in the GDPpc, and a strong correlation was observed between this index and mortality rates. Conclusion: The evolution of the variation in GDPpc demonstrated a strong correlation with the reduction in CSD mortality. This relationship demonstrates the importance of improving the living conditions of the population to reduce cardiovascular mortality.