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Int. j. cardiovasc. sci. (Impr.) ; 35(1): 28-36, Jan.-Feb. 2022. graf, tab
Article in English | LILACS, CONASS, SES-SP, SESSP-IDPCPROD, SES-SP | ID: biblio-1356316


BACKGROUND: Exercise tests are an important tool in the investigation of myocardial ischemia. The ramp protocol has gained increasing importance in clinical practice because of the possibility of individualizing its exercise intensity. OBJECTIVE: To assess and compare the sensitivity, specificity, and accuracy of Bruce and ramp protocols for exercise testing in the diagnosis of myocardial ischemia considering myocardial perfusion scintigraphy as the reference standard. Secondary objectives included the assessment of hemodynamic profiles, functional capacity, and the incidence of arrhythmias in each of the protocols. METHODS: Participants underwent exercise testing using the ramp and Bruce protocols, and the tests' diagnostic power was assessed. For testing the difference between data provided by both protocols, we used a paired Student's t-test or Wilcoxon test, depending on the assumption of data normality. The level of significance adopted for all tests was 5%. RESULTS: The ramp protocol showed sensitivity, specificity, and accuracy values of 55.6%, 82.4%, and 76.7%, respectively, whereas the Bruce protocol had results of 77.8%, 64.7%, and 67.4%, respectively. The maximum heart rate and double product at peak exercise were significantly higher in the Bruce protocol (p = 0.043 and p = 0.040, respectively). No differences were observed between the incidence of arrhythmias in both protocols. CONCLUSION: The Bruce protocol presented higher sensitivity for detecting ischemia on the exercise test, while the ramp protocol presented higher specificity and accuracy.

Humans , Male , Female , Adolescent , Adult , Middle Aged , Aged , Aged, 80 and over , Young Adult , Coronary Artery Disease/diagnosis , Myocardial Ischemia/diagnosis , Exercise Test , Myocardial Perfusion Imaging/methods , Exercise , Predictive Value of Tests , Hemodynamics
Arq. bras. cardiol ; 118(2): 400-408, 2022. tab, graf
Article in English, Portuguese | LILACS | ID: biblio-1364332


Resumo Fundamento Foi demonstrado que as subunidades de interleucina-35 (IL-35) estão fortemente expressas nas placas ateroscleróticas em humanos. Assim, considera-se que elas têm um papel na aterosclerose. Objetivos Neste estudo, os níveis de IL-35 foram comparados com o grupo controle em pacientes com doença arterial coronariana (DAC) estável, e a associação entre os níveis de IL-35 e o tipo, gravidade e extensão da lesão foram investigadas com o escore Gensini (GS) e o escore Syntax (SS) no grupo de pacientes Métodos Sessenta pacientes (18 mulheres e 42 homens) com DAC, diagnosticados por meio da angiografia coronária, que apresentaram dor no peito típica e teste de esforço não invasivo positivo, e 46 pacientes (18 mulheres e 28 homens) com luminograma normal, foram incluídos no estudo. Tanto o GS quanto o SS foram calculados para o grupo de pacientes, e esses valores foram comparados com os níveis de IL-35. Variáveis com distribuição não normal foram avaliadas com o teste U de Mann-Whitney, enquanto os parâmetros com distribuição normal foram analisados com o teste t de Student. A diferença entre as variáveis categóricas foi avaliada pelo teste de qui-quadrado ou de Fisher. Os valores de p<0,05 foram considerados como estatisticamente sinificativos. Resultados Não foram observadas diferenças significativas entre pacientes e o grupo controle em termos de características demográficas e achados laboratoriais. Em comparação ao grupo controle, os níveis de IL-35 no grupo com DAC foram consideravalmente menores (36,9±63,9 ng/ml vs. 33,2±13,2 ng/ml, p<0,008). Embora não tenha sido estatisticamente significativo, os níveis de IL-35 foram maiores em pacientes com SS mais baixo do que nos com SS mais alto (33,2±13,7 vs. 31,8±8,9, p=0,51). Os valores de IL-35 em pacientes com GS alto foram significativamente mais baixos do que em pacientes com GS baixo (35±17,4 vs. 30,7±8,6, p=0,043). Conclusão Demonstrou-se que os níveis de IL-35 podem ser um novo biomarcador para a DAC estável, e que a IL-35 está associada à extensão da DAC.

Abstract Background It has been shown that interleukin-35 (IL-35) subunits are strongly expressed in atherosclerotic plaques in humans. Therefore, it is considered to play a role in atherosclerosis. Objectives In this study, IL-35 levels were compared with the control group in patients with stable coronary artery disease (CAD), and the association between IL-35 levels and the lesion type, lesion severity and extension was investigated with the Gensini score (GS) and the Syntax score (SS) in the patient group. Methods Sixty patients (18 female and 42 male) with CAD diagnosed by coronary angiography, who presented with typical chest pain and positive noninvasive cardiac stress test, and 46 patients (18 female and 28 male) with normal coronary lumenogram, were included in this study. Gensini and Syntax scores were calculated in the patient group, and these values were compared with IL-35 levels. Non-normally distributed variables were analyzed by the Mann-Whitney U test, whereas normally distributed parameters were assessed by Student's t-test. The difference between categorical variables were evaluated by the Chi-square or Fisher test. P-values<0.05 were considered as statistically significant. Results No significant differences were observed between patients and the control group in terms of demographic characteristics and laboratory findings. Compared to the control group, IL-35 levels of the CAD group were considerably lower (36.9±63.9 ng/ml vs. 33.2±13.2 ng/ml, p<0.008). Although not statistically significant, IL-35 levels were higher in patients with low SS than among those with high SS (33.2±13.7 vs. 31.8±8.9, p=0.51). The IL-35 values of the patients with high GS were significantly lower than in patients with low GS (35±17.4 vs. 30.7±8.6, p=0.043). Conclusion It has been shown that IL-35 levels can be a new biomarker for stable CAD, and IL-35 is associated with the extension of CAD.

Humans , Male , Female , Coronary Artery Disease/diagnosis , Interleukins/blood , Atherosclerosis/diagnosis , Severity of Illness Index , Biomarkers , Coronary Angiography
Int. j. cardiovasc. sci. (Impr.) ; 34(4): 443-451, July-Aug. 2021. tab, graf
Article in English | LILACS | ID: biblio-1286841


Abstract Background Coronary artery disease (CAD) is an important cause of morbidity and mortality in women and requires early diagnosis for defining the appropriate treatment. Objective To identify the positive predictive value (PPV) and safety of the early use of handgrip exercise in pharmacological stress echocardiography using dobutamine (early-ECHO) in women. Methods Positive ischemic early-ECHO records from 111 women were evaluated from January 2012 to March 2018. Subsequently, the hospital medical records were verified to locate patients who underwent conventional coronary angiography (CCA), and we analyzed the medical conduct adopted for these patients. Statistical analyses were performed using SPSS employing one-way analysis of variance (ANOVA), Fisher's exact test, or Pearson's chi-square test. The level of statistical significance was set at p < 0.05 for all analyses. Results Four patients (4.4%) presented serious complications during the examination. Out of 90 patients who underwent CCA, 71 (78.9%) had CAD. Among these 71 patients, 58 (81.7%) had severe lesions and 13 (18.3%) presented moderate CAD. Moreover, CCA did not demonstrate relevant coronary lesions in 19 of the 90 patients (21.1%). Among patients with severe CAD, 16 (27.6%) underwent myocardial revascularization surgery; 34 (58.6%) underwent percutaneous coronary angioplasty; and 08 (13.7%) had their clinical treatments intensified. The PPV for early-ECHO was 78.9%. Conclusions Early-ECHO showed a high PPV for diagnosing myocardial ischemia in women. It presented a low complication rate and provided rapid disease identification, allowing the early treatment of injuries and potentially preventing CAD complications.

Humans , Female , Adult , Middle Aged , Aged , Aged, 80 and over , Coronary Artery Disease/diagnosis , Hand Strength , Echocardiography, Stress , Coronary Artery Disease/complications , Coronary Artery Disease/mortality , Coronary Artery Disease/prevention & control , Predictive Value of Tests , Myocardial Ischemia/diagnosis
Int. j. cardiovasc. sci. (Impr.) ; 34(2): 179-187, Mar.-Apr. 2021. tab, graf
Article in English | LILACS | ID: biblio-1154555


Abstract Background Coronary artery disease (CAD) causes electrical heterogeneity on ventricular myocardium and ventricular arrhythmia due to myocardial ischemia linked to ventricular repolarization abnormalities. Objective Our aim is to investigate the impact of increased level of CAD spectrum and severity on ventricular repolarization via Tp-e interval, Tp-e/QT and Tp-e/QTc ratios. Methods 127 patients with normal coronary artery (group 1), 129 patients with stable CAD (group 2) and 121 patients with acute coronary syndrome (group 3) were enrolled. Tp-e interval, Tp-e/QT and Tp-e/QTc ratios were evaluated as well as baseline demographic and clinical parameters. Kruskal-Wallis one-way ANOVA test was used for comparing quantitative variables with abnormal distribution while One-Way ANOVA test was used for comparing the means between groups with normal distribution. Tukey HSD and Welch tests were used for subgroups analyses with normal distribution. Spearman analysis was used to evaluate the correlation between clinical variables and repolarization markers. A p-value < 0.05 was considered statistically significant. Results Tp-e interval [66(50-83), 71(59-82) and 76(64-86); group 1,2 and 3 respectively, p<0.001], Tp-e/QT (0.170.02, 0.180.01 and 0,190.01; group 1,2 and 3 respectively, p<0.001) and Tp-e/QTc (0.150.02, 0.160.02 and 0.170.02; group 1,2 and 3 respectively, p<0.001) ratios were found to be associated with increased level of CAD spectrum. Syntax score was positively correlated with Tp-e interval (r=0.514, p<0.001), Tp-e/QT (r=0.407, p<0.001), and Tp-e/QTc ratios (r=0.240, p<0.001). Conclusion Prolonged Tp-e interval and increased Tp-e/QT and Tp-e/QTc ratios were detected in the presence of CAD and especially in patients with acute ischemic syndromes. (Int J Cardiovasc Sci. 2020; [online].ahead print, PP.0-0)

Humans , Male , Female , Middle Aged , Aged , Coronary Artery Disease/diagnosis , Electrocardiography/methods , Acute Coronary Syndrome/diagnosis , Arrhythmias, Cardiac , Reference Values , Cross-Sectional Studies
Int. j. cardiovasc. sci. (Impr.) ; 34(1): 32-38, Jan.-Feb. 2021. tab
Article in English | LILACS | ID: biblio-1154540


Abstract Background Comparative data on the performance of cardiovascular risk scoring systems (CRSSs) in patients with severe coronary artery disease (CAD) are lacking. Objectives To compare different CRSSs regarding their ability to discriminate patients with severe CAD. Method A total of 414 patients (297 men; 61.3±12.3 years of age) undergoing coronary angiography were enrolled and evaluated for major risk factors. Cardiovascular risk and risk category were defined for each patient using the Framingham, Systemic Coronary Risk Evaluation (SCORE), and Pooled Cohort Risk Assessment Equation (PCRAE) tools. Severe CAD was defined as ≥ 50% stenosis in at least one major coronary artery and/or previous coronary stenting or coronary artery bypass grafting. A p < 0.05 was considered statistically significant. Results Severe CAD was identified in 271 (65.4%) patients. The ROC curves of the 3 CRSSs for predicting severe CAD were compared and showed no significant difference: the area under the ROC curve was 0.727, 0.694, and 0.717 for the Framingham, SCORE, and PCRAE tools, respectively (p > 0.05). However, when individual patients were classified as having low, intermediate, or high cardiovascular risk, the rate of patients in the high-risk group was significantly different between the PCRAE, Framingham, and SCORE tools (73.4%, 27.5%, and 37.9%, respectively; p < 0.001). Discussion PCRAE had higher positive and negative predictive values for detecting severe CAD in high-risk patients than the Framingham and SCORE tools. Conclusion We can speculate that currently used CRSSs are not sufficient, and new scoring systems are needed. In addition, other risk factors, such as serum creatinine, should be considered in future CRSSs. Int J Cardiovasc Sci. 2020; [online].ahead print, PP.0-0

Humans , Male , Female , Middle Aged , Aged , Coronary Artery Disease/diagnosis , Heart Disease Risk Factors , Cross-Sectional Studies , Prospective Studies , Coronary Angiography , Risk Assessment , Creatinine
Braz. j. med. biol. res ; 54(2): e10466, 2021. tab
Article in English | LILACS | ID: biblio-1153513


Preoperative evaluation in elective surgeries has been associated with successful surgical treatment. However, there is no solid scientific evidence that screening for coronary artery disease (CAD) reduces surgical risk. The aims of this study were to describe the frequency of inappropriate investigation of obstructive CAD induced by pre-anesthetic assessment in individuals without cardiovascular symptoms (candidates for low- to intermediate-risk surgeries) and to evaluate predictors of this conduct. We performed a retrospective evaluation of medical records of anesthesiology services from patients undergoing pre-anesthesia assessment between May 2015 and May 2016, including those with functional capacity ≥4 metabolic equivalents without a diagnosis of heart disease. A total of 778 medical records (47±16 years of age, 62.6% female) were studied. A private hospital performed 50.1% of the surgeries and 60.4% were of intermediate risk. Only 2.7% (95%CI: 1.7-4.1%) were screened for CAD, and 91% of these requests were mediated by cardiology consultations performed during pre-anesthetic testing visits. Factors associated with screening for CAD were hypertension, diabetes, moderate systemic disease (ASA III), cardiac consultation, previous diagnosis of CAD, and admission to a private hospital. Independent predictors were private hospitals (OR: 3.9; 95%CI: 1.3-11.0), ASA III (OR: 5.3; 95%CI: 1.7-16.2), and hypertension (OR: 3.8; 95%CI: 1.5-9.8). The frequency of inappropriate requests for CAD screening in asymptomatic individuals without untreated systemic diseases was low in pre-anesthetic visits. Although infrequent, screening for CAD is more common in the private setting, in patients with poorer health status, and is usually prescribed during cardiology consultation.

Humans , Male , Female , Adult , Middle Aged , Coronary Artery Disease/surgery , Coronary Artery Disease/diagnosis , Unnecessary Procedures , Anesthesia , Mass Screening , Retrospective Studies , Risk Factors , Risk Assessment , Heart Diseases
Int. j. cardiovasc. sci. (Impr.) ; 33(4): 380-388, July-Aug. 2020. tab, graf
Article in English | LILACS | ID: biblio-1134381


Abstract Background: The presence of nucleated red blood cells (NRBCs) and increases in mean platelet volume (MPV) and neutrophil to lymphocyte ratio (NLR) in peripheral circulation are associated with poorer prognosis in patients with acute coronary disease. Objective: We developed a scoring system for in-hospital surveillance of all-cause mortality using hematological laboratory parameters in patients with acute myocardial infarction (AMI). Methods: Patients admitted for AMI were recruited in this prospective study. Exclusion criteria were age younger than 18 years, glucocorticoid therapy, cancer or hematological diseases and readmissions. NRBCs, MPV and NLR were measured during hospitalization. The scoring system was developed in three steps: first, the magnitude of the association of clinical and laboratory parameters with in-hospital mortality was measured by odds ratio (OR), second, a multivariate logistic regression model was conducted with all variables significantly (p < 0.05) associated with the outcome, and third, a β-coefficient was estimated by multivariate logistic regression with hematological parameters with a p < 0.05. Results: A total of 466 patients (mean age were 64.2 ± 12.8 years, 61.6% male) were included in this study. A hematological scoring system ranging from 0 to 49, where higher values were associated with higher risk of in-hospital death. The best performance was registered for a cut-off value of 26 with sensitivity of 89.1% and specificity of 67.2%, positive predictive value of 26.8% (95% CI: 0.204 - 0.332) and negative predictive value of 97.9% (95% CI: 0.962 - 0.996). The area under the curve for the scoring system was 0.868 (95% CI: 0.818 - 0.918). Conclusions: Here we propose a hematological scoring system for surveillance tool during hospitalization of patients with acute myocardial infarction. Based on total blood count parameters, the instrument can evaluate inflammation and hypoxemia due to in-hospital complications and, consequently, predict in-hospital mortality.

Humans , Male , Female , Middle Aged , Aged , Severity of Illness Index , Coronary Artery Disease/diagnosis , Hospital Mortality , Myocardial Infarction/diagnosis , Prognosis , Biomarkers , Predictive Value of Tests , Prospective Studies , Sensitivity and Specificity , Erythrocytes , Mean Platelet Volume/methods , Myocardial Infarction/mortality
Int. j. cardiovasc. sci. (Impr.) ; 33(3): 263-271, May-June 2020. tab, graf
Article in English | LILACS | ID: biblio-1134371


Abstract Background: Stress test is used to detect coronary artery disease (CAD). The QTc interval dispersion (dQTc) is an electrocardiographic index of ventricular repolarization heterogeneity. Some researchers have linked transient myocardial ischemia induced by physical exertion with increased heterogeneity of ventricular repolarization measured by dQTc. Objectives: To study the patterns of dQT in patients with and without chronic obstructive CAD and to define a reliable cutoff point for dQT that could become a diagnostic criterion for myocardial ischemia. Methods: We retrospectively analyzed the electrocardiogram in resting and in exercise of 63 patients submitted to exercise test and cardiac catheterization. We divided the patients into three groups: true negative (VN), true positive (VP) and false positive (FP). VN: patients with coronary lesion lower than 70% and exercise test without myocardial ischemia; VP: individuals with stenosis greater than 70% in coronary arteries and a test suggestive of myocardial ischemia; FP: people with stenosis lower than 70% in the coronary arteries and stress test with ischemia criteria. Values of p < 0.05 were considered statistically significant. Results: Resting dQTc was not different among the three groups. However, for the dispersion of the QTc interval in exercise was, respectively, 47 ± 17 ms, 72 ± 42 ms, and 61 ± 31 ms for VN, VP and FP (p = 0.003). Conclusions: Obstructive chronic coronary disease patients have an increase in dQTc during exercise. Measurement of dQTc may be helpful in the diagnosis of myocardial ischemia in the stress test.

Humans , Male , Female , Adult , Middle Aged , Aged , Coronary Artery Disease/diagnosis , Exercise Test/methods , Coronary Artery Disease/physiopathology , Chronic Disease , Myocardial Ischemia/diagnosis , Electrocardiography/methods , Analytical Epidemiology
Arq. bras. cardiol ; 113(1): 71-76, July 2019. tab, graf
Article in English | LILACS | ID: biblio-1011235


Abstract Background: Coronary artery fistula (CAF) is an abnormal connection that links a coronary artery to a cardiac chamber or another major blood vessel. Several studies have shown the association between mean platelet volume (MPV) and cardiovascular diseases. In the literature, there is no previous study about the association between hematologic parameters and congenital CAF. For this reason, we aimed to investigate the association of MPV with CAF. Methods: 70 patients with normal coronary arteries and 50 with coronary artery fistulas were included. Routine blood and biochemical parameters were measured before the arteriography. Differences between groups for continuous variables were analyzed with t- test or Mann-Whitney test. P values < 0.05 were considered significant. Regression analysis was used to find independent predictors of CAF. Results: Baseline patient demographics, including age and clinical risk factors, were similar between the groups. Compared to the control group, median (IQR) High-density lipoprotein cholesterol (HDL) levels were significantly higher (p=0.04) and MPV levels were significantly lower in the CAF group (8.84 ± 1.71fL vs. 10.43 ± 1.34, p < 0.001). In the multivariate analysis, only MPV was a significant predictor of CAF (p < 0.001, 95% CI for OR: 0.438 (0.306-0.629). A negative correlation was found between MPV and fistulae in Pearson's correlation test (r: -0.454, p < 0.001). An MPV level of < 9,6 fL showed sensitivity, specificity, positive predictive value and negative predictive value of 80%, 68%, 71% and 78% respectively (AUC = 0.766, 95% CI, 0.678-0.854) for the prediction of CAF. Conclusion: The present study suggests that MPV may decrease in patients with CAF.

Resumo Fundamento: A fístula da artéria coronária (FAC) é uma conexão anormal que liga a artéria coronária a uma câmara cardíaca ou outro importante vaso sanguíneo. Vários estudos mostraram a associação entre o volume plaquetário médio (VPM) e as doenças cardiovasculares. Na literatura, não há estudo prévio sobre a associação entre os parâmetros hematológicos e a FAC congênita. Por essa razão, nosso objetivo foi investigar a relação do VPM com a FAC. Métodos: Foram incluídos 70 pacientes com artérias coronárias normais e 50 com fístulas de artérias coronárias. Os parâmetros sanguíneos e bioquímicos de rotina foram medidos antes da arteriografia. As diferenças entre os grupos para as variáveis contínuas foram analisadas com o teste t ou teste de Mann-Whitney. Valores de p < 0,05 foram considerados significativos. A análise de regressão foi utilizada para encontrar preditores independentes de FAC. Resultados: Os dados demográficos basais dos pacientes, incluindo idade e fatores de risco clínicos, foram semelhantes entre os grupos. Comparados à mediana do grupo controle (IIQ), os níveis de HDL-colesterol foram significativamente mais altos (p = 0,04) e os níveis de VPM foram significativamente mais baixos no grupo FAC (8,84 ± 1,71fL vs. 10,43 ± 1,34, p < 0,001). Na análise multivariada, apenas o VPM foi um preditor significativo de FAC (p<0,001, IC 95% para OR: 0,438 (0,306-0,629)). Foi encontrada uma correlação negativa entre o VPM e fístulas no teste de correlação de Pearson (r: -0,454, p < 0,001). Um nível de VPM < 9,6 fL apresentou sensibilidade, especificidade, valor preditivo positivo e valor preditivo negativo de 80%, 68%, 71% e 78%, respectivamente (AUC = 0,766, IC 95%, 0,678-0,854) para a previsão de FAC. Conclusão: O presente estudo sugere que o VPM pode diminuir no paciente com FAC.

Humans , Male , Female , Middle Aged , Aged , Coronary Artery Disease/blood , Coronary Vessel Anomalies/blood , Mean Platelet Volume , Fistula/blood , Coronary Artery Disease/diagnosis , Case-Control Studies , Predictive Value of Tests , Risk Factors , Sensitivity and Specificity , Coronary Vessel Anomalies/diagnosis , Fistula/diagnosis
Rev. Soc. Cardiol. Estado de Säo Paulo ; 29(3 Supl): 302-305, jul.-set. 2019. tab
Article in English, Portuguese | LILACS | ID: biblio-1023113


A isquemia miocárdica induzida por esforço em níveis significativos interferiria no aumento no volume sistólico e levaria à deflexão da curva do PuO2. A alteração da resposta curvilínea do PuO2, que resulta em achatamento da curva, demonstraria redução do volume sistólico e/ou falha para aumentar a extração de oxigênio. Em revisão não sistemática da literatura, encontramos poucos relatos sobre a deflexão da curva do PuO2 secundária à isquemia induzida por esforço, totalizando apenas nove estudos em 22 anos, que abrangeram 339 pacientes. A sensibilidade e a especificidade do TE foi de, respectivamente, 46% e 66%; a sensibilidade e a especificidade do TCP atingiram, respectivamente, 51% e 60%, considerando-se a deflexão do PuO2. Quando a deflexão do PuO2 foi associada à relação entre VO2/work rate slope, a sensibilidade e a especificidade atingiram 87% e 74%, respectivamente. No subgrupo com isquemia extensa, o pico do PuO2 foi reduzido em comparação com o subgrupo com isquemia discreta (12,8 ± 3,8 vs. 16,4 ± 4,6 ­ p < 0,05), demonstrando que a deflexão da curva de PuO2 pode estar presente nos casos de isquemia miocárdica extensa. Houve elevação do PuO2 de 11,76 para 13,27 ml/batimento e do slope de PuO2 de 7,05 para 9,25 depois de angioplastia coronariana. Há indícios de que a utilização do teste cardiopulmonar no diagnóstico da doença coronariana pode ser útil, rastreando os casos de maior gravidade

Exercise-induced myocardial ischemia, at significant levels, may interfere in the increase of systolic volume and cause deflection of the PuO2 curve. A change of the curvilinear response of PuO2, which results in a flattening of the curve, demonstrates a reduction of the systolic volume and/or failure to increase the extraction of oxygen. In a non-systematic literature review, we found few publications about the deflection of the PuO2 curve, secondary to exercise-induced ischemia, totaling only nine studies over 22 years, and including 339 patients. The sensitivity and the specificity of the ET were 46% and 66%, respectively; the sensitivity and the sensibility of the CPT reached 51% and 60%, respectively, considering the deflection of PuO2. When the deflection of PuO2 was associated with the relationship between VO2/work rate slope, the sensibility and specificity reached 87% and 74%, respectively. In the subgroup with extensive ischemia, peak PuO2 was reduced as compared to the subgroup with mild ischemia (12.8±3.8 vs. 16.4±4.6 - p < 0.05), showing that there may be a flattening of the curve in cases with extensive myocardial ischemia. There was an increase in PuO2 from 11.76 to 13.27 ml/beat and of the slope of PuO2 from 7.05 to 9.25 following coronary angioplasty. There are indications that the use of cardiopulmonary testing may be useful in the diagnosis of coronary heart disease, detecting more serious cases

Humans , Male , Female , Oxygen Consumption , Coronary Artery Disease/diagnosis , Exercise Test/methods , Prognosis , Stroke Volume , Echocardiography/methods , Exercise , Sensitivity and Specificity , Myocardial Ischemia , Heart Rate
Arq. bras. cardiol ; 112(6): 715-719, Jun. 2019. tab, graf
Article in English, Portuguese | LILACS | ID: biblio-1011222


Abstract Background: Platelets are important in the initiation of thrombosis, and their morphological and functional changes are closely related with the occurrence and development of coronary artery thrombosis. Platelet parameters might be valuable in distinguishing between acute myocardial infarction (AMI) and stable coronary artery disease (SCAD). Objective: This study was designed to detect and compare changes in platelet parameters, such as mean platelet volume (MPV) in patients with acute myocardial infarction (AMI) and stable coronary artery disease (SCAD) and to investigate their roles in these diseases. Methods: Specimen collection: Between January 2011 and December 2013, 2 mL of elbow vein blood was drawn from each of 31 patients primarily diagnosed with AMI, 34 SCAD patients and 50 healthy subjects; and placed in EDTA-K2 anticoagulant tubes. Platelet count (PLT), MPV, plateletcrit (PCT), platelet distribution width (PDW), white blood cell (WBC) and neutrophil (NEU) counts were determined using an STKS automated hematology analyzer (Beckman Courter). Results: Compared with the control group, MPV levels were significantly higher in the AMI and SCAD groups (p < 0.05), while PLT was significantly lower (p < 0.05). Conclusion: These results suggest that MPV and other related parameters have a certain value in the diagnosis of SCAD and AMI.

Resumo Fundamento: As plaquetas são importantes no início da trombose e suas alterações morfológicas e funcionais estão intimamente relacionadas com a ocorrência e o desenvolvimento de trombose da artéria coronária. Os parâmetros plaquetários podem ser valiosos na distinção entre infarto agudo do miocárdio (IAM) e doença arterial coronariana estável (DACE). Objetivo: O objetivo desse estudo foi detectar e comparar alterações nos parâmetros plaquetários, como o volume plaquetário médio (VPM) em pacientes com infarto agudo do miocárdio (IAM) e doença arterial coronariana estável (DACE) e investigar seu papel nessas doenças. Métodos: Coleta de amostras: Entre janeiro de 2011 e dezembro de 2013, foram retirados 2 mL de sangue da veia do antebraço de cada um dos 31 pacientes diagnosticados principalmente com IAM, 34 pacientes com DACE e 50 indivíduos saudáveis; e colocado em tubos com anticoagulante EDTA-K2. As contagens de plaquetas (PQT), VPM, massa total de plaquetas (MTP), Amplitude de Distribuição de Plaquetas (PDW, do inglês platelet distribution width), contagem de glóbulos brancos (WBC, do inglês white blood cells) e neutrófilos (NEU) foram determinadas utilizando-se um analisador de hematologia automatizado STKS (Beckman Courter). Resultados: Comparado com o grupo controle, os níveis de VPM foram significativamente maiores nos grupos IAM e DACE (p < 0,05), enquanto os níveis de PQT foram significativamente menores (p < 0,05). Conclusão: Esses resultados sugerem que o VPM e outros parâmetros associados têm um certo valor no diagnóstico de DACE e IAM.

Humans , Male , Female , Aged , Platelet Count/methods , Coronary Artery Disease/blood , Mean Platelet Volume/methods , Myocardial Infarction/blood , Coronary Artery Disease/diagnosis , Biomarkers/blood , Case-Control Studies , Predictive Value of Tests , ROC Curve , Sensitivity and Specificity , Middle Aged , Myocardial Infarction/diagnosis
Hist. ciênc. saúde-Manguinhos ; 26(1): 103-121, Jan.-Mar. 2019.
Article in Portuguese | LILACS | ID: biblio-989866


Resumo O estigma internalizado ocorre quando o indivíduo tem consciência do estigma a ele atribuído, concordando e aplicando a si próprio os estereótipos negativos sobre sua doença. A internalização do estigma agrava os sintomas do transtorno mental, levando a isolamento, sentimentos de baixa autoestima, culpa e autorreprovação. Buscou-se produzir mais conhecimentos acerca dessa temática, a partir da visão das pessoas com transtorno mental que participam de ações visando construir coletivamente soluções no cuidado em saúde mental. Com o objetivo de analisar o processo de estigma e estigma internalizado, realizou-se pesquisa qualitativa, com entrevistas semiestruturadas. Os resultados revelaram que o estigma internalizado tem efeitos negativos no indivíduo, e que a família tem forte influência nesse processo.

Abstract Internalized stigma occurs when individuals become aware of the stigma assigned to them, agree, and apply these negative stereotypes about their illness to themselves. The internalization of stigma aggravates the symptoms of mental disorders, leading to isolation, feelings of low self-esteem, guilt, and self-condemnation. Our goal was to produce more knowledge on this topic from the point of view of people with mental disorders who participate in activities aimed at collectively building mental health care solutions. With the objective of analyzing the process of stigma and internalized stigma, we carried out qualitative research using semi-structured interviews. The results showed that internalized stigma has negative effects on individuals, and that the family has a strong influence on this process.

Aged , Female , Humans , Male , Middle Aged , Platelet Count/methods , Coronary Artery Disease/blood , Mean Platelet Volume/methods , Myocardial Infarction/blood , Coronary Artery Disease/diagnosis , Biomarkers/blood , Case-Control Studies , Predictive Value of Tests , ROC Curve , Sensitivity and Specificity , Myocardial Infarction/diagnosis