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1.
Indian J Thorac Cardiovasc Surg ; 40(2): 171-176, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38389778

RESUMO

Purpose: Chronic venous insufficiency is defined as a progressive disease that impairs the quality of life. Symptomatic patients can be treated with a 97% success rate through endovenous radiofrequency ablation (RFA) procedures. The aim of this study is to evaluate the effect and impact of RFA therapy on both the Venous Insufficiency Epidemiological and Economic Study Quality of Life/Symptom Questionnaire (VEINES-QOL/Sym) scale and the VEINES-QOL/Sym severity score in patients with isolated vena saphena magna insufficiency. Methods: Between March and June 2018, a retrospective analysis was conducted on 45 patients with a healthy vena saphena parva. They were divided into two groups based on the diameter of the great saphenous vein (GSV). Patients with GSV < 6 mm were assigned to group I (n = 22, 15 males, 7 females, mean age 52.45 ± 13.98 years), while patients with GSV ≥ 6 mm were assigned to group II (n = 23, 14 males, 9 females, mean age 55.04 ± 10.18 years). The pre-procedural Clinical-Etiology-Anatomy-Pathophysiology (CEAP) classification and post-procedural quality of life and symptom assessment at 12-24 months were evaluated using the VEINES-QOL/Sym questionnaire scale. Results: When all patients were assessed in terms of the VEINES-QOL/Sym questionnaire scale, compared to the previous year, it was found that 57.8% of patients (n = 26) still experienced complaints, and 24.4% of patients (n = 14) reported slightly worse symptoms than the previous year. In group II, 56.5% of patients (n = 13) reported experiencing similar complaints as the previous year, while 30.4% (n = 7) noted slightly worse symptoms. Conclusions: Our study findings revealed that the increase in vessel diameter does not significantly impact the severity of symptoms and quality of life outcomes after RFA therapy; however, it does have a notable impact on the improvement of symptom characteristics. As a result, early intervention for symptomatic patients is crucial in order to address their symptoms and improve their quality of life.

2.
Turk Kardiyol Dern Ars ; 50(1): 22-33, 2022 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-35197230

RESUMO

OBJECTIVE: Coronary artery disease (CAD) is an important public health problem worldwide. Therefore, it is important to identify the molecular mechanisms and the candidate gene polymorphisms involved in the development of CAD. In this study, we focused on 2 polymorphisms of the atherosclerosis-related genes, ESR1 and CYP19A1. METHODS: Unselected 339 individuals who underwent coronary angiography were divided into 2 groups: those with normal coronary arteries (≤30% stenosis) and those with critical disease (≥50% stenosis). Individuals were genotyped for CYP19A1 rs10046 C/T and ESR1 rs2175898 A/G polymorphisms using hybridization probes in real-time PCR. In addition, Gensini and SYNTAX scores were assessed. RESULTS: ESR1 polymorphism was significantly associated with CAD in men (p=0.036) via G allele carriage. Multiple logistic regression analyses showed that ESR1 rare allele carriage was associated with CAD presence (Odds ratio=2.12, 95% confidence interval 1.01-4.1, p=0.025), adjusted for age, HDL-C, LDL-C and smoking status in the male group. CYP19A1 rs10046 T allele carriers had a 2.84-fold increased risk for complex CAD in multiple logistic regression analysis (p=0.016). Furthermore, the univariate analysis of variance indicated that T allele carriage of rs10046 polymorphism was associated with increased SYNTAX and Gensini scores (p<0.05). Female patients who were ESR1 G allele carriers with CAD had higher adiponectin levels (p=0.005), whereas HbA1c levels were associated with T allele of CYP19A1 in the CAD group (p=0.004) and male CAD group (p=0.018). CONCLUSION: The CYP19A1 and ESR1 polymorphisms were associated with the presence and severity of CAD. These gene polymorphisms warrant further studies for the elucidation of their contribution to CAD development.


Assuntos
Doença da Artéria Coronariana , Alelos , Angiografia Coronária , Doença da Artéria Coronariana/complicações , Doença da Artéria Coronariana/genética , Feminino , Predisposição Genética para Doença , Hormônios Esteroides Gonadais , Humanos , Masculino , Polimorfismo Genético , Fatores de Risco
3.
J Int Med Res ; 48(11): 300060520967561, 2020 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-33147418

RESUMO

OBJECTIVE: The performance of coronary bypass grafting (CBG) induces a type of subclinical systemic inflammatory response syndrome. The present study was performed to examine the changes in pentraxin 3 (PTX3) and oxidative parameters during cross-clamping in patients undergoing CBG. We also examined factors affecting the development of postoperative atrial fibrillation (POAF). METHOD: This study involved 40 patients who underwent elective on-pump CBG (33 men, 7 women; mean age, 60.8 ± 8.0 years). Blood specimens were drawn before anaesthesia and after aortic cross-clamping. POAF was detected by analysing the rhythm records of telemetry units for 96 hours postoperatively. RESULTS: The mean PTX3 concentration prior to surgery was 176.3 ± 148.4 pg/mL. After cross-clamping, it increased to 947.7 ± 377.2 pg/mL. The increase was statistically significant. Twelve patients had POAF. The leucocyte count and change in the oxidative stress index were significantly higher in patients without than with POAF. Although the increase in PTX3 was higher in patients without POAF, the difference was not statistically significant. CONCLUSION: The PTX3 concentration significantly increases during CBG. A significant change in the oxidative stress index and a more intense increase in the PTX3 concentration were seen in patients without POAF.


Assuntos
Fibrilação Atrial , Proteína C-Reativa , Componente Amiloide P Sérico , Idoso , Fibrilação Atrial/etiologia , Proteína C-Reativa/análise , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estresse Oxidativo , Complicações Pós-Operatórias/etiologia , Fatores de Risco , Componente Amiloide P Sérico/análise
4.
Anatol J Cardiol ; 17(6): 436-444, 2017 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-28315569

RESUMO

OBJECTIVE: To assist the management strategy of individuals, we determined an algorithm for predicting the risk of coronary heart disease (CHD) death in Turkish adults with a high prevalence of metabolic syndrome (MetS). METHODS: The risk of CHD death was estimated in 3054 middle-aged adults, followed over 9.08±4.2 years. Cox proportional hazard regression was used to predict risk. Discrimination was assessed using C-statistics. RESULTS: CHD death was identified in 233 subjects. In multivariable analysis, the serum high-density lipoprotein-cholesterol (HDL-C) level was not predictive in men and the non-HDL-C level was not predictive in women. Age, presence of diabetes, systolic blood pressure ≥160 mm Hg, smoking habit, and low physical activity were predictors in both sexes. The exclusion of coronary disease at baseline did not change the risk estimates materially. Using an algorithm of the 7 stated variables, individuals in the highest category of risk score showed a 19- to 50-fold higher spread in the absolute risk of death from CHD than those in the second lowest category. C-index of the model using age alone was as high as 0.774 in men and 0.836 in women (p<0.001 each), while the incorporation of 6 conventional risk factors contributed to a C-index of 0.058 in males and 0.042 in females. CONCLUSION: In a middle-aged population with prevalent MetS, men disclosed anticipated risk parameters (except for high HDL-C levels) as determinants of the risk of CHD death. On the other hand, serum non-HDL-C levels and moderate systolic hypertension were not relevant in women. The moderate contribution of conventional risk factors (beyond age) to the estimation of the risk of CHD death in women is consistent with the operation of autoimmune activation.


Assuntos
Algoritmos , Doença da Artéria Coronariana/mortalidade , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , HDL-Colesterol/sangue , Doença da Artéria Coronariana/sangue , Doença da Artéria Coronariana/etiologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Prevalência , Modelos de Riscos Proporcionais , Fatores de Risco , Sensibilidade e Especificidade , Fatores Sexuais , Turquia/epidemiologia
5.
Oxid Med Cell Longev ; 2016: 3932092, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27994711

RESUMO

Introduction. Extracorporeal circulation (ECC) related systemic oxidative stress is a well-known entity but the underlying mechanisms are not clearly described. Our aim was to investigate the relation between the oxidative stress indices, inflammatory markers, and phosphorylcholine-coated (PCC) ECC systems. Patients and Methods. Thirty-two consecutive coronary artery bypass grafting (CABG) cases were randomly assigned to Group I (PCC, n = 18) and Group II (noncoated, n = 14) ECC circuits. Total Antioxidant Status (TAS), Total Oxidant Status (TOS), Tumor Necrosis Factor-α (TNF-α), Interleukin-1ß (IL-ß), Interleukin-6 (IL-6), Interleukin-8 (IL-8), Interleukin-10 (IL-10), and Procalcitonin (PCT) levels were measured at 5 different time points. The association between the oxidative indices levels and PCC system used was analyzed. Results. In Group I TOS and TAS statuses were increased at T1, T2, T3, and T4, while IL-10 and TNF-α levels accompanied those raises only at T2 (Group I-Group II, 4.73 ± 2.04 versus 2.79 ± 0.63, p = 0.002, and 30.56 ± 8.11 versus 23.97 ± 7.8, p = 0.031, resp.). In contrast, mean TAS and TOS levels were similar to baseline at all time points in Group II but IL-6 and IL-8 levels were increased at T2 (Group I-Group II, 16.84 ± 5.63 versus 44.81 ± 17.0, p = 0.001, and 38.88 ± 9.8 versus 46.14 ± 9.25, p = 0.038, resp.). Conclusion. Even coated ECC systems are still incapable of attenuating the inflammatory response to cardiopulmonary bypass (CPB).


Assuntos
Ponte de Artéria Coronária , Circulação Extracorpórea , Oxidantes/sangue , Fosforilcolina/farmacologia , Demografia , Feminino , Humanos , Inflamação/sangue , Interleucinas/sangue , Masculino , Pessoa de Meia-Idade , Estresse Oxidativo
7.
Expert Rev Cardiovasc Ther ; 14(4): 513-23, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-26849352

RESUMO

Gender differences exist in cardiovascular or metabolic disease risk, beyond the protective effect of estrogens, mostly burdening the postmenopausal female. We aimed to review herein sex differences in pro-inflammatory states, the independence of inflammation from insulin resistance, differences in high-density lipoprotein dysfunction, in gene-environment interactions, and in the influence of current and former smoking on cardiometabolic risk. Sex differences in absorption of long-chain fatty acids are highlighted. Differences exist in the first manifestation of cardiovascular disease, men being more likely to develop coronary heart disease as a first event, compared to women who have cerebrovascular disease or heart failure as a first event. Autoimmune activation resulting from pro-inflammatory states, a fundamental mechanism for numerous chronic diseases in people prone to metabolic syndrome, is much more common in women, and these constitute major determinants. Therapeutic approaches to aspects related to sex difference are briefly reviewed.


Assuntos
Estrogênios/metabolismo , Inflamação/metabolismo , Resistência à Insulina , Lipoproteínas HDL/metabolismo , Síndrome Metabólica , Obesidade , Autoimunidade , Doenças Cardiovasculares/epidemiologia , Doenças Cardiovasculares/prevenção & controle , Gerenciamento Clínico , Feminino , Interação Gene-Ambiente , Humanos , Masculino , Síndrome Metabólica/epidemiologia , Síndrome Metabólica/imunologia , Obesidade/epidemiologia , Obesidade/prevenção & controle , Fatores de Risco , Fatores Sexuais
8.
World J Gastroenterol ; 21(48): 13555-65, 2015 Dec 28.
Artigo em Inglês | MEDLINE | ID: mdl-26730168

RESUMO

AIM: To assess the association of a surrogate of fatty liver disease (FLD) with incident type-2 diabetes, coronary heart disease, and all-cause mortality. METHODS: In a prospective population-based study on 1822 middle-aged adults, stratified to gender, we used an algorithm of fatty liver index (FLI) to identify associations with outcomes. An index ≥ 60 indicated the presence of FLD. In Cox regression models, adjusted for age, smoking status, high-density lipoprotein cholesterol, and systolic blood pressure, we assessed the predictive value of FLI for incident diabetes, coronary heart disease (CHD), and all-cause mortality. RESULTS: At a mean 8 year follow-up, 218 and 285 incident cases of diabetes and CHD, respectively, and 193 deaths were recorded. FLD was significantly associated in each gender with blood pressure, total cholesterol, apolipoprotein B, uric acid, and C-reactive protein; weakly with fasting glucose; and inversely with high-density lipoprotein-cholesterol and sex hormone-binding globulin. In adjusted Cox models, FLD was (with a 5-fold HR) the major determinant of diabetes development. Analyses further disclosed significant independent prediction of CHD by FLD in combined gender [hazard ratio (HR) = 1.72, 95% confidence interval (CI): 1.17-2.53] and men (HR = 2.35, 95%CI: 1.25-4.43). Similarly-adjusted models for all-cause mortality proved, however, not to confer risk, except for a tendency in prediabetics and diabetic women. CONCLUSION: A surrogate of FLD conferred significant high risk of diabetes and coronary heart disease, independent of some metabolic syndrome traits. All-cause mortality was not associated with FLD, except likely in the prediabetic state. Such a FLI may reliably be used in epidemiologic studies.


Assuntos
Doença das Coronárias/epidemiologia , Diabetes Mellitus Tipo 2/epidemiologia , Fígado Gorduroso/epidemiologia , Adulto , Idoso , Algoritmos , Causas de Morte , Distribuição de Qui-Quadrado , Doença das Coronárias/diagnóstico , Doença das Coronárias/mortalidade , Diabetes Mellitus Tipo 2/diagnóstico , Diabetes Mellitus Tipo 2/mortalidade , Fígado Gorduroso/diagnóstico , Fígado Gorduroso/mortalidade , Feminino , Seguimentos , Humanos , Incidência , Estimativa de Kaplan-Meier , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Valor Preditivo dos Testes , Modelos de Riscos Proporcionais , Estudos Prospectivos , Medição de Risco , Fatores de Risco , Fatores de Tempo , Turquia/epidemiologia
9.
Turk Kardiyol Dern Ars ; 42(5): 419-25, 2014 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-25080946

RESUMO

OBJECTIVES: We aimed to investigate the role of oxidative stress related with ischemia- reperfusion damage on the pathogenesis of atrial fibrillation (AF) developing after coronary artery bypass graft (CABG) surgery. STUDY DESIGN: In our prospective, single-center study, 118 patients who underwent elective isolated on-pump CABG surgery were included. Patients were divided into two groups according to the development of postoperative atrial fibrillation (POAF) as Group 1: Patients who developed POAF, and Group 2: Patients who remained in sinus rhythm. In addition to preoperative demographic, laboratory, echocardiographic, intraoperative, and postoperative clinical characteristics, levels of plasma total oxidative status (TOS) after placement and removal of aortic cross clamp (ACC) were compared between the two groups. Predictors of POAF were also investigated by multivariate logistic regression analysis. RESULTS: A comparison of preoperative demographic, laboratory, echocardiographic, and postoperative clinical characteristics between the two groups showed that patients in Group 1 were significantly older (65.6±7.20 vs. 59.6±9.07, p<0.001), had a lower hematocrit level (37.5±5.16 vs. 39.7±5.28; p=0.034), and an enlarged left atrium diameter (39±0.45 vs. 3.6±0.48; p=0.006). Changes in plasma TOS levels after placement and removal of ACC were statistically significant in Group 1 [13 (8.6-23), 30 (18.1-47.3); p=0.001 vs. 14 (8.8-22.2), 24 (21.4-42.7); p=0.060]. Length of stay in the intensive care unit [3 (2-14) vs. 2 (1-58); p=0.001] and length of stay in hospital [7 (6-85) vs. 7 (5-58); p=0.001] were prolonged in Group 1. In multivariate logistic regression analysis, aging (odds ratio (OR): 1.088, 95% confidence interval (CI): 1.005-1.177; p=0.036), hematocrit level (OR: 0.718, 95% CI: 0.538-0.958; p=0.025), pump temperature (OR: 1.445, 95% CI: 1.059-1.972; p=0.020), and plasma TOS level (OR: 1.040, 95% CI: 1.020-1.050; p=0.040) were found to be independent predictors of POAF. CONCLUSION: Ischemia-reperfusion damage related with ACC placement may be an important factor on the pathogenesis of POAF. Minimizing the oxidative stress occurring intraoperatively should be targeted for preventing mortality and morbidity due to POAF.


Assuntos
Fibrilação Atrial/fisiopatologia , Ponte de Artéria Coronária , Estresse Oxidativo , Complicações Pós-Operatórias/fisiopatologia , Traumatismo por Reperfusão/fisiopatologia , Idoso , Feminino , Hematócrito , Humanos , Tempo de Internação , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos
10.
Angiology ; 65(3): 239-42, 2014 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-24052521

RESUMO

Resistin, which is derived from the gene of RSTN, belongs to a family of cysteine-rich secretory proteins called resistin-like molecules (RELMs). Increased serum resistin levels are associated with coronary artery disease (CAD) and the risk of cardiovascular death. Patients (n = 214) with an initial diagnosis of stable angina pectoris, unstable angina pectoris, and myocardial infarction without ST-segment elevation and referred to catheter laboratory for coronary angiography were enrolled in the study. We aimed to investigate the relationship between increased serum resistin level and CAD. The severity of CAD was calculated by the Gensini scoring system. In conclusion, we established a significant correlation between serum resistin levels and CAD (P = .010). Also, serum resistin levels correlated with the Gensini score that represents the severity of CAD angiographically (P = .010).


Assuntos
Doença das Coronárias/fisiopatologia , Resistina/sangue , Angiografia Coronária , Doença das Coronárias/sangue , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Índice de Gravidade de Doença
11.
Scand J Clin Lab Invest ; 73(7): 569-75, 2013 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-24094290

RESUMO

BACKGROUND: In view of recent evidence that serum creatinine and dysfunctional apolipoprotein (apo)A-I may serve as inflammation mediators in people with enhanced inflammation, we studied whether or not these molecules were interrelated and associated with coronary heart disease (CHD) likelihood even in subjects without metabolic syndrome (MetS) or type-2 diabetes. METHODS: Among unselected middle-aged Turkish adults with available serum apo A-I, lipoprotein(a) and creatinine measurements, 697 participants (designated as 'healthy') were enrolled, after exclusion of the stated metabolic disorders. CHD was identified in 87 subjects, roughly half during 3.1 years' follow-up. RESULTS: 'Healthy' individuals were overweight and had partly impaired fasting glucose but otherwise normal serum creatinine and other biochemical measurements. Being consistent with lacking anti-inflammatory activity, apoA-I was linearly and positively associated with apoB, in women further with creatinine. Logistic regression analyses showed that, beyond age, not non-HDL-cholesterol, systolic blood pressure and smoking status, but serum creatinine in each sex (OR in men 1.63 [95% CI 1.14; 2.31]) and CRP in women were significantly associated with CHD likelihood. The combined highest and lowest creatinine quartiles in women displayed an OR 2.14 (1.02; 4.51) compared with the intermediate quartiles, after similar adjustments. CONCLUSION: Elevated creatinine levels within normal range, linked to apoA-I dysfunctionality, are independently associated with CHD likelihood even in non-diabetic subjects without MetS. In such women the lowest creatinine quartile is also linked to CHD risk.


Assuntos
Doença das Coronárias/sangue , Creatinina/sangue , Diabetes Mellitus/sangue , Síndrome Metabólica/sangue , Adulto , Idoso , Apolipoproteína A-I/sangue , Apolipoproteínas B/sangue , Proteína C-Reativa/metabolismo , Estudos de Casos e Controles , HDL-Colesterol/sangue , Feminino , Humanos , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Fatores de Risco
12.
Heart Vessels ; 27(4): 391-7, 2012 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-21698349

RESUMO

Predictors of aortic dilatation are not well described in patients with bicuspid aortic valves (BAV). This study sought to examine the relationship between proximal aortic dilatation and matrix metalloproteinase-9 (MMP-9) and alpha 1-antitrypsin (α1AT) levels in patients with BAV. All patients underwent echocardiography using a standard protocol, and aortic measurements were taken in end-diastole. We studied 82 patients with BAV and categorized them into two groups according to aortic dimensions corrected for body surface area and age. The plasma level of α1AT was routinely determined using a BN ProSpec analyzer (Siemens Healthcare Diagnostics, Marburg, Germany), and that of MMP-9 were determined by ELISA (RayBiotech Inc. Norcross, GA, USA). Statistical analysis was performed using the Statistical Package for Social Sciences (SPSS; SPSS Inc., Chicago, IL, USA) software for Windows version 12. This study included patients with BAV with no or mild valvular impairment. There were no significant differences between groups in terms of gender, body surface area, associated hypertension, diabetes mellitus, hyperlipidemia, or smoking. The mean ascending aortic diameter was 4.38 ± 0.5 mm in group 1 and 3.34 ± 0.35 mm in group 2 (p < 0.001). Plasma concentration of α1AT in patients with ascending aortic dilatation was significantly lower than that in the non-dilated group (1.32 ± 0.27 and 1.49 ± 0.25 g/l, respectively; p = 0.005). However, no significant difference was found in the MMP-9 level between the two groups (336.49 ± 233.11 and 336.39 ± 268.072 pg/ml, respectively; p = 0.96). We observed a significantly negative correlation between ascending aortic diameter and α1AT level (r = -0.300, p = 0.006) and a positive correlation between ascending aortic diameter and age (r = 0.413, p < 0.001). No significant correlation was found between plasma MMP-9 concentration and ascending aortic diameter (r = -0.008, p = 0.94). A multiple linear regression analysis was performed, including age, α1AT level, MMP-9 level, and left ventricular diastolic diameter. In this analysis, α1AT level and age were the independent predictors of aortic dilatation (p = 0.03 and p = 0.02, respectively).


Assuntos
Aorta/patologia , Doenças da Aorta/etiologia , Valva Aórtica/anormalidades , Cardiopatias Congênitas/complicações , alfa 1-Antitripsina/sangue , Adulto , Fatores Etários , Aorta/diagnóstico por imagem , Doenças da Aorta/sangue , Doenças da Aorta/diagnóstico por imagem , Doenças da Aorta/patologia , Valva Aórtica/diagnóstico por imagem , Biomarcadores/sangue , Distribuição de Qui-Quadrado , Dilatação Patológica , Regulação para Baixo , Ecocardiografia Doppler , Ensaio de Imunoadsorção Enzimática , Feminino , Cardiopatias Congênitas/sangue , Cardiopatias Congênitas/diagnóstico por imagem , Cardiopatias Congênitas/patologia , Humanos , Modelos Lineares , Masculino , Metaloproteinase 9 da Matriz/sangue , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Medição de Risco , Fatores de Risco , Turquia , Adulto Jovem
13.
Scand J Clin Lab Invest ; 71(5): 426-31, 2011 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-21554056

RESUMO

INTRODUCTION: Aspirin is effective in the secondary prevention and high-risk primary prevention of cardiovascular events. However, clinical and laboratory evidence demonstrates diminished or no response to aspirin in some patients. This study was designed to assess aspirin response in haemodialysis patients. METHODS: We prospectively enrolled 78 haemodialysis patients (28 female; 58.4 ± 12.6 years old) and 79 patients (29 female; 58.4 ± 10.6 years old) with normal renal function (glomerular filtration rate (GFR) >60 mL/min/1.73 m(2)). All subjects in both the haemodialysis patient group and the control group were taking aspirin (80-300 mg) for at least 30 days and were not taking other antiplatelet agents. Platelet function was assessed by arachidonic acid-induced aggregometry with a Multiplate analyser (Dynabyte Medical, Munich, Germany). Multiplate electrode aggregometry values below 300 AU were applied as a cut-off for response to aspirin. RESULTS: Aspirin non-response was two-fold more prevalent in haemodialysis patients (42.3%) than in patients with normal renal function (21.5%), and this difference was statistically significant (p = 0.005). The two groups were similar in terms of sex, age, tobacco use, the presence of diabetes mellitus, and platelet count. CONCLUSIONS: The frequency of aspirin non-response as defined in this study was higher in haemodialysis patients than in patients with normal renal function. However, larger subsets of patients are needed to confirm the present study.


Assuntos
Aspirina/uso terapêutico , Falência Renal Crônica/terapia , Inibidores da Agregação Plaquetária/uso terapêutico , Diálise Renal , Idoso , Aspirina/farmacologia , Estudos de Casos e Controles , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Agregação Plaquetária/efeitos dos fármacos , Inibidores da Agregação Plaquetária/farmacologia , Falha de Tratamento
14.
Echocardiography ; 28(1): 8-14, 2011 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-20738368

RESUMO

INTRODUCTION: To determine whether elevated N-terminal pro-BNP (NT pro-BNP) predicts pulmonary artery systolic pressure increase on exercise stress echocardiography in asymptomatic or mildly symptomatic patients with moderate to severe mitral stenosis. METHODS AND RESULTS: Forty-one asymptomatic or mildly symptomatic patients with moderate to severe mitral stenosis and 21 age- and sex-matched healthy subjects. Transthoracic echocardiography was performed in all patients to assess the severity of the valve disease and to measure pulmonary artery pressure before and immediately after treadmill exercise. Blood samples for NT pro-BNP were also collected before and immediately after treadmill exercise at the time of echocardiographic examination. The plasma concentrations of NT pro-BNP levels were significantly higher in patients with mitral stenosis than in control subjects before and after exercise (P < 0.001). Patients with atrial fibrillation had significantly higher NT pro-BNP levels compared to those with sinus rhythm (P < 0.001). Pre- and postexercise NT pro-BNP levels correlated statistically significantly with the left atrial (LA) dimension, right ventricle enddiastolic diameter, exercise duration, heart rate, rest, and exercise pulmonary artery systolic pressure, after exercise mitral valve mean gradient. Area under the receiver-operating characteristic curve for NT pro-BNP as an exercise induced augmentation of pulmonary artery pressure was 0.78. Using an optimized cutoff value of 251 pg/mL for NT pro-BNP, sensitivity was 89.47%. The independent determinants of higher pulmonary artery pressure were LA diameter and pretest NT pro-BNP levels in multivariante analysis. CONCLUSION: NT pro-BNP levels correlate with functional class and echocardiographic findings in patients with mitral stenosis and indicate exercise induced augmentation of peak PAP > 60 mmHg. (Echocardiography 2011;28:8-14).


Assuntos
Teste de Esforço , Estenose da Valva Mitral/diagnóstico , Peptídeo Natriurético Encefálico/sangue , Artéria Pulmonar/patologia , Estudos de Casos e Controles , Ecocardiografia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estenose da Valva Mitral/sangue , Estenose da Valva Mitral/diagnóstico por imagem , Artéria Pulmonar/diagnóstico por imagem
15.
Echocardiography ; 22(6): 473-8, 2005 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-15966931

RESUMO

This study is designed to evaluate the N-terminal pro-BNP (NTproBNP) levels in patients with mitral stenosis (MS) and its possible correlation with clinical and echocardiographic parameters of the disease. The study group consisted of 29 patients with isolated MS (patients with greater mild regurgitation were excluded) and 20 normal control subjects of similar age and gender distribution. Blood samples for NTproBNP were collected at the time of clinical and echocardiographic examination. NTproBNP levels were elevated in patients with MS compared to controls (325 +/- 249 pg/dL [19.9-890] versus 43 +/- 36 pg/dL [5.76-193.3], P < 0.001). Patients with atrial fibrillation had significantly higher NTproBNP levels compared to those with sinus rhythm (561 +/- 281 pg/dL versus 254 +/- 194 pg/dL, P = 0.044). MS patients with sinus rhythm also had higher NTproBNP levels compared to controls (254 +/- 194 pg/dL versus 43 +/- 36 pg/dL, P = 0.00011). NT pro BNP levels correlated to the LA (R = 0.73, P < 0.0001) and RV (R = 0.41, P = 0.042) diameters, mitral valve area (R =-0.45, P = 0.025), mean mitral gradient (R = 0.57, P = 0.003), peak PAP (R = 0.7, P = 0.03), and NYHA functional class (R = 0.61, P = 0.007). In conclusion, serum NTproBNP levels correlate well with echocardiographic findings and functional class in patients with MS and can be used as a marker of disease severity. Additionally, it may have a potential use as an additional noninvasive and relatively cheap method in monitoring disease progression especially in patients with poor echocardiographic windows.


Assuntos
Ecocardiografia Doppler , Estenose da Valva Mitral/sangue , Estenose da Valva Mitral/diagnóstico por imagem , Peptídeo Natriurético Encefálico/sangue , Fragmentos de Peptídeos/sangue , Estudos de Casos e Controles , Distribuição de Qui-Quadrado , Feminino , Humanos , Masculino , Pessoa de Meia-Idade
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