Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 89
Filtrar
Mais filtros

Base de dados
País/Região como assunto
Tipo de documento
Intervalo de ano de publicação
1.
J Nucl Cardiol ; 25(2): 586-592, 2018 04.
Artigo em Inglês | MEDLINE | ID: mdl-27663249

RESUMO

AIM: Transient ischemic dilation (TID) is a marker of severe coronary artery disease (CAD). We aimed to assess the incremental value of TID in a cohort of patients with known significant CAD who had recurrence of symptoms after revascularization. METHODS: We identified in our databases 104 patients who had recent coronary revascularization and recurrence of symptoms. 62 patients had PCI (75 arteries) and 42 patients had CABG (104 arteries). All had follow-up stress SPECT MPI and repeat coronary angiography. Myocardial perfusion findings of ischemia and TID were correlated with presence of significant obstructive CAD (>70% stenosis). RESULTS: Follow-up stress Tc-99m Sestamibi SPECT MPI revealed inducible ischemia in 38 patients (36.5%) and TID > 1.20 in 49 patients (47%). Subsequent coronary angiography showed significant obstructive CAD in 44 patients (42%). The sensitivity for detecting obstructive CAD was 61% for SPECT MPI alone, but increased significantly to 93% by the addition of TID as a diagnostic criterion (P < 0.0001). CONCLUSIONS: In this selected patient cohort with prior coronary revascularization, TID is an important marker of obstructive CAD and has incremental value over SPECT MPI alone.


Assuntos
Doença da Artéria Coronariana/diagnóstico por imagem , Reestenose Coronária/diagnóstico por imagem , Vasos Coronários/diagnóstico por imagem , Revascularização Miocárdica , Idoso , Constrição Patológica , Angiografia Coronária , Ponte de Artéria Coronária , Dilatação , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Isquemia Miocárdica , Imagem de Perfusão do Miocárdio , Intervenção Coronária Percutânea , Curva ROC , Recidiva , Estudos Retrospectivos , Sensibilidade e Especificidade , Tecnécio Tc 99m Sestamibi , Tomografia Computadorizada de Emissão de Fóton Único
2.
Scand Cardiovasc J ; 50(1): 23-7, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-26507385

RESUMO

OBJECTIVES: The crucial role of twisting motion on both left ventricular (LV) contraction and relaxation has been clearly identified. However, the reports studying the association between LV torsion and loading conditions have revealed conflicting outcomes. Previously normal saline infusion was shown to increase LV rotation. Our aim was to test this phenomenon after volume depletion in healthy volunteer blood donors. DESIGN: A total of 26 healthy male volunteers were included in the study. LV end-diastolic and end-systolic diameter, LV ejection fraction, LV diastolic parameters, LV apical and basal rotation and peak systolic LV torsion were measured by speckle-tracking echocardiography before and after 450 mL blood donation. RESULTS: Blood donation led to a significant decrease in end-diastolic LV internal diameter (48.7 ± 0.4 versus 46.4 ± 0.4 mm; p < 0.001) and cardiac output (6.2 ± 1.0 versus 5.1 ± 0.7 L/min; p < 0.001). There was a significant decrease in the magnitude of peak systolic apical rotation (4.4 ± 1.9° versus 2.9 ± 1.5°; p < 0.001) but no change in basal rotation (2.6 ± 1.4° versus 2.7 ± 1.6°; p = 0.81). Peak systolic LV Torsion decreased after blood donation (6.9 ± 1.9° versus 5.7 ± 2.1°; p = 0.028). CONCLUSIONS: LV apical rotation and peak systolic LV torsion seem to be preload dependent. Preload reduction provided by 450-mL blood donation decreased LV torsion in healthy male volunteers. Volume dynamics should be taken into account in the evaluation of LV torsion.


Assuntos
Doadores de Sangue , Volume Sanguíneo , Contração Miocárdica , Função Ventricular Esquerda , Adaptação Fisiológica , Adulto , Fenômenos Biomecânicos , Diástole , Ecocardiografia Doppler de Pulso , Voluntários Saudáveis , Humanos , Masculino , Volume Sistólico , Sístole , Fatores de Tempo , Torção Mecânica
3.
Ann Noninvasive Electrocardiol ; 21(3): 287-93, 2016 May.
Artigo em Inglês | MEDLINE | ID: mdl-26246339

RESUMO

BACKGROUND: The risk of syncope and sudden cardiac death due to ventricular arrhythmias increased in patients with aortic stenosis (AS). Recently, it was shown that Tp-e interval, Tp-e/QT, and Tp-e/QTc ratio can be novel indicators for prediction of ventricular arrhythmias and mortality. We aimed to investigate the association between AS and ventricular repolarization using Tp-e interval and Tp-e/QT ratio. METHODS: Totally, 105 patients with AS and 60 control subjects were enrolled to this study. The severity of AS was defined by transthoracic echocardiographic examination. Tp-e interval, Tp-e/QT, and Tp-e/QTc ratios were measured from the 12-lead electrocardiogram. RESULTS: Tp-e interval, Tp-e/QT, and Tp-e/QTc ratios were significantly increased in parallel to the severity of AS (P < 0.001, P = 0.001, and P = 0.001, respectively). Also, it was shown that Tp-e/QTc ratio had significant positive correlation with mean aortic gradient (r = 0.192, P = 0.049). In multivariate logistic regression analysis, Tp-e/QTc ratio and left ventricular mass were found to be independent predictors of severe AS (P = 0.03 and P = 0.04, respectively). CONCLUSIONS: Our study showed that Tp-e interval, Tp-e/QT, and Tp-e/QTc ratios were increased in patients with severe AS. Tp-e/QTc ratio and left ventricular mass were found as independent predictors of severe AS.


Assuntos
Estenose da Valva Aórtica/fisiopatologia , Eletrocardiografia , Sistema de Condução Cardíaco/fisiopatologia , Idoso , Arritmias Cardíacas/fisiopatologia , Estudos de Casos e Controles , Morte Súbita Cardíaca , Ecocardiografia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Fatores de Risco , Índice de Gravidade de Doença , Síncope/fisiopatologia
4.
Echocardiography ; 33(9): 1309-16, 2016 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-27158773

RESUMO

BACKGROUND: There is much evidence linking inflammation to the initiation and continuation of atrial fibrillation (AF). Inflammatory bowel diseases (IBD), including ulcerative colitis (UC) and Crohn's disease (CD), are chronic systemic inflammatory disorders. Atrial electromechanical delay (EMD) has been known as an early marker of AF. The objectives of this study were to evaluate the atrial electromechanical properties in patients with IBD. METHODS: Fifty-two patients with IBD and 26 healthy controls were recruited in the study. Twenty-five of patients with IBD were on active period, and the remaining 27 were on remission period. Atrial electromechanical properties were measured by using transthoracic echocardiography and tissue Doppler imaging and simultaneous surface ECG recording. Interatrial EMD, left intraatrial EMD, and right intraatrial EMD were calculated. RESULTS: Patients on activation with IBD had significantly prolonged left and right intraatrial EMDs and interatrial EMD compared to patients on remission (P = 0.048, P = 0.036, P < 0.001, respectively) and healthy controls (P < 0.001, for all comparisons). Left and right intraatrial EMDs and interatrial EMD were also found to be higher when patients on remission with IBD compared with healthy controls. No statistical difference was observed between UC and CD in terms of inter- and intraatrial EMDs. CONCLUSIONS: Atrial electromechanical conduction is prolonged in IBD, and exposure to chronic inflammation may lead to structural and electrophysiological changes in the atrial tissue that causes slow conduction. Measurement of atrial EMD parameters might be used to predict the risk for the development of AF in patients with IBD.


Assuntos
Fibrilação Atrial/fisiopatologia , Acoplamento Excitação-Contração , Átrios do Coração/fisiopatologia , Sistema de Condução Cardíaco/fisiopatologia , Doenças Inflamatórias Intestinais/fisiopatologia , Contração Miocárdica , Adulto , Ecocardiografia/métodos , Feminino , Átrios do Coração/diagnóstico por imagem , Humanos , Masculino , Reprodutibilidade dos Testes , Sensibilidade e Especificidade
5.
Ren Fail ; 38(8): 1180-6, 2016 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-27416751

RESUMO

INTRODUCTION: Left ventricular hypertrophy (LVH) is one of the most common cardiac abnormalities in patients with end stage renal disease (ESRD). Hypertension, diabetes, increased body mass index, gender, age, anemia, and hyperparathyroidism have been described as risk factors for LVH in patients on dialysis. However, there may be other risk factors which have not been described yet. Recent studies show that renalase is associated with cardiovascular events. The aim of this study was to reveal the relation between renalase, LVH in patients under hemodialysis (HD) treatment. METHODS: The study included 50 HD patients and 35 healthy controls. Serum renalase levels and left ventricle mass index (LVMI) were measured in all participants and the relation between these variables was examined. FINDINGS: LVMI was positively correlated with dialysis vintage and C-reactive protein (CRP) (r = 0.387, p = 0.005 and r = 0.597, p < 0.001, respectively) and was negatively correlated with residual diuresis and hemoglobin levels (r = -0.324, p = 0.022 and r = -0.499, p < 0.001, respectively). There was no significant association of renalase with LVMI in the HD patients (r = 0.263, p = 0.065). Serum renalase levels were significantly higher in HD patients (212 ± 127 ng/mL) compared to controls (116 ± 67 ng/mL) (p < 0.001). Renalase was positively correlated with serum creatinine and dialysis vintage (r = 0.677, p < 0.001 and r = 0.625, p < 0.001, respectively). DISCUSSION: In our study, LVMI was correlated with dialysis vintage, residual diuresis, CRP, and hemoglobin. LVMI tends to correlate with renalase and this correlation may be significant in studies with more patient numbers. The main parameters affecting renalase levels are dialysis vintage and serum creatinine.


Assuntos
Ventrículos do Coração/diagnóstico por imagem , Hipertrofia Ventricular Esquerda/diagnóstico por imagem , Falência Renal Crônica/complicações , Monoaminoxidase/sangue , Diálise Renal , Adulto , Idoso , Proteína C-Reativa/análise , Estudos de Casos e Controles , Creatinina/sangue , Estudos Transversais , Ecocardiografia Doppler em Cores , Feminino , Humanos , Hipertrofia Ventricular Esquerda/etiologia , Falência Renal Crônica/terapia , Masculino , Pessoa de Meia-Idade , Análise de Regressão , Fatores de Risco , Turquia
6.
Heart Lung Circ ; 25(2): 160-5, 2016 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-26412487

RESUMO

BACKGROUND: Coeliac disease (CD) is an autoimmune and inflammatory disorder of the small intestine. There is reasonable evidence linking inflammation to the initiation and continuation of atrial fibrillation (AF) in inflammatory conditions. Atrial electro-mechanic delay (EMD) was suggested as an early marker of AF in previous studies. The objectives of this study were to evaluate atrial electromechanical properties measured by tissue Doppler imaging and simultaneous electrocardiography (ECG) tracing in patients with CD. METHODS: Thirty-nine patients with coeliac disease (CD), and 26 healthy volunteers, matched for age and sex, were enrolled in the study. Atrial electromechanical properties were measured by using transthoracic echocardiography and surface ECG. Interatrial electro-mechanic delay (EMD), left intraatrial EMD, right intratrial EMD were calculated. RESULTS: There was no difference between CD patients and healthy volunteers in terms of basal characteristics. Patients with CD had significantly prolonged left and right intraatrial EMDs, and interatrial EMD compared to healthy controls (p= 0.03, p= 0.02, p<0.0001, respectively). Interatrial EMD was positively correlated with age, disease duration, anti-gliadin IgG, anti-endomysium and disease status. In multiple linear regression, interatrial EMD was independently associated with disease duration, anti-endomysium and disease status after adjusting for age and sex. CONCLUSIONS: In the present study, atrial EMDs were found significantly higher in patients with CD compared with healthy individuals. Measurement of atrial EMD parameters might be used to predict the risk of development of AF in patients with CD.


Assuntos
Fibrilação Atrial/fisiopatologia , Doença Celíaca/fisiopatologia , Átrios do Coração/fisiopatologia , Adulto , Fibrilação Atrial/sangue , Fibrilação Atrial/diagnóstico por imagem , Fibrilação Atrial/etiologia , Doença Celíaca/sangue , Doença Celíaca/complicações , Doença Celíaca/diagnóstico por imagem , Ecocardiografia , Ecocardiografia Doppler em Cores , Eletrocardiografia , Técnicas Eletrofisiológicas Cardíacas , Feminino , Átrios do Coração/diagnóstico por imagem , Humanos , Masculino , Pessoa de Meia-Idade
7.
Turk Kardiyol Dern Ars ; 44(1): 53-64, 2016 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-26875131

RESUMO

OBJECTIVE: The purpose of this study was to identify patient characteristics and statin discontinuation-related factors in patients with hypercholesterolemia. METHODS: A total of 532 patients (age mean±SD: 57.4±11.5 years; 52.4% women, 47.6% men) with hypercholesterolemia and statin discontinuation were included in this national cross-sectional non-interventional observational study. Data on socio-demographic characteristics of patients, cardiovascular risk factors, past treatment with and discontinuation of statin treatment were collected in one visit. RESULTS: Mean±SD duration of hypercholesterolemia was 4.9±4.2 years at time of discontinuation of statin treatment. Statin treatment was initiated by cardiologists in the majority of cases (55.8%), whereas discontinuation of statin treatment was decided by patients in the majority of cases (73.7%), with patients with higher (at least secondary education, 80.4%) more likely than those with lower (only primary education, 69.7%) to decide to discontinue treatment (p=0.022). Negative information about statin treatment disseminated by TV programs-mostly regarding coverage of hepatic (38.0%), renal (33.8%), and muscular (32.9%) side effects (32.9%)-was the most common reason for treatment discontinuation. CONCLUSION: The decision to discontinue statin treatment was made at the patient's discretion in 74% of cases, with higher likelihood of patients with higher educational status deciding to discontinue treatment and switch to non-drug lipid-lowering alternatives. Cardiologists were the physicians most frequently responsible for the initiation of the statin treatment; coverage of several non-life-threatening statin side effects by TV programs and patients' lack of information regarding high cholesterol and related risks were the leading factors predisposing to treatment discontinuation.


Assuntos
Inibidores de Hidroximetilglutaril-CoA Redutases/uso terapêutico , Hipercolesterolemia/tratamento farmacológico , Hipercolesterolemia/epidemiologia , Adesão à Medicação/estatística & dados numéricos , Idoso , Estudos Transversais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Fatores Socioeconômicos , Turquia
8.
Echocardiography ; 32(10): 1498-503, 2015 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-25735868

RESUMO

OBJECTIVES: Epicardial adipose tissue (EAT) and atrial electromechanical delay (AEMD) have been shown to be closely linked with atrial fibrillation. In this study, we aimed to investigate the relationship between EAT and AEMD. METHODS: Ninety-six patients were included in this study. Echocardiographic measurements were performed, and laboratory parameters were recorded. Patients were divided into two groups according to their inter-AEMD values. Patients with an inter-AEMD value of <42.6 msec formed group 1 and patients with an inter-AEMD value of ≥42.6 msec formed group 2. RESULTS: The EAT thickness (3.7 ± 1.2 vs. 5.0 ± 1.6, P < 0.001) and LAVI (20.4 ± 2.9 vs. 24.5 ± 6.7, P = 0.001) were significantly higher in group 2. There was a significant positive correlation between AEMD parameters with EAT and LAVI. After multivariate logistic regression analysis, EAT (OR: 1.505; 95% CI: 1.056-2.143, P = 0.023) and LAVI (OR: 1.140; 95% CI: 1.018-1.277, P = 0.023) were found as independent predictors of prolonged AEMD. CONCLUSIONS: We found that EAT thickness was closely related with AEMD, and we also found that EAT and LAVI were independent predictors of prolonged AEMD. These findings may be helpful to explain some pathogenic mechanisms in the development of AF.


Assuntos
Tecido Adiposo/diagnóstico por imagem , Ecocardiografia/métodos , Átrios do Coração/diagnóstico por imagem , Sistema de Condução Cardíaco/diagnóstico por imagem , Hipertensão/diagnóstico por imagem , Pericárdio/diagnóstico por imagem , Eletrocardiografia , Feminino , Átrios do Coração/fisiopatologia , Sistema de Condução Cardíaco/fisiopatologia , Humanos , Hipertensão/fisiopatologia , Masculino , Pessoa de Meia-Idade , Fatores de Risco
9.
Turk Kardiyol Dern Ars ; 43(2): 138-48, 2015 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-25782118

RESUMO

OBJECTIVES: This study investigated the effects of infliximab, a monoclonal antibody against TNFα, on myocardial deformation and aortic elasticity in patients with rheumatoid arthritis (RA), and the association of aortic elasticity with myocardial deformation. STUDY DESIGN: 38 female rheumatoid arthritis (RA) patients and 30 healthy controls were included in the study. Twenty patients received infliximab and 18 patients received prednisolone. Left ventricular (LV) longitudinal, circumferential and radial strain, systolic strain rate and early diastolic strain rate using speckle-tracking echocardiography, and aortic elasticity using M-mode echocardiography were assessed at baseline and post-treatment. RESULTS: LV systolic longitudinal basal-, mid-, and apical strain, systolic mid- and apical strain rate, basal-, mid- and apical early strain rate, circumferential systolic apical strain and systolic strain rate were reduced in RA patients compared to controls. Compared to baseline, infliximab treatment increased aortic strain, aortic distensibility and decreased aortic ß index. No significant aortic elastic changes were observed with prednisolone treatment. Longitudinal basal- and apical strain, basal-, mid- and apical systolic and diastolic strain rates, circumferential basal systolic strain, radial mid- and apical strain and apical strain rate were increased following infliximab treatment. Infliximab treatment improves aortic elasticity in parallel to myocardial deformation, but no significant association was observed following prednisolone treatment. CONCLUSION: Myocardial deformation is impaired in RA patients and is related to aortic stiffness. Chronic inhibition of TNFα improves LV deformation in association with aortic elasticity.


Assuntos
Anticorpos Monoclonais/uso terapêutico , Antirreumáticos/uso terapêutico , Aorta/patologia , Artrite Reumatoide/tratamento farmacológico , Artrite Reumatoide/patologia , Miocárdio/patologia , Fator de Necrose Tumoral alfa/antagonistas & inibidores , Adulto , Idoso , Anticorpos Monoclonais/efeitos adversos , Antirreumáticos/efeitos adversos , Aorta/diagnóstico por imagem , Artrite Reumatoide/diagnóstico por imagem , Estudos de Casos e Controles , Ecocardiografia/métodos , Feminino , Humanos , Infliximab , Masculino , Pessoa de Meia-Idade
10.
Turk Kardiyol Dern Ars ; 43(3): 250-8, 2015 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-25905996

RESUMO

OBJECTIVE: The aim of this study was to evaluate acute cardiac remodeling after transcatheter closure of atrial septal defect (ASD) in adult patients. METHODS: This study included 19 patients (40.0 ± 13.51 mean age) with secundum ASD who underwent successful transcatheter closure. All patients received routine transthoracic echocardiography, including tissue Doppler left ventricle (LV) and right ventricle (RV) myocardial performance indices (MPI), mitral annular plane systolic excursion (MAPSE) and tricuspid annular plane systolic excursion (TAPSE) before ASD closure, on first day, and at first and third months after closure. RESULTS: Left ventricle end-diastolic diameter (LVEDD) increased (37 ± 4 mm to 44 ± 5 mm, p<0.001); RVEDD decreased markedly after closure (40 ± 4 mm to 32 ± 5 mm, p<0.001); and differences existed in LV and RV adaptation. While MAPSE (1.87 ± 0.22 cm to 2.01 ± 0.23 cm, p<0.001) and LVMPI improved soon after procedure (0.44 ± 0.04 to 0.36 ± 0.03, p<0.001), RVMPI worsened until the first month post-procedure (0.25 ± 0.02 to 0.31 ± 0.03, p<0.001), but recovered by the third month follow-up visit (0.31 ± 0.03 to 0.27 ± 0.02, p<0.001). TAPSE remained unchanged (2.49 ± 0.46 cm to 2.51 ± 0.32 cm, p=0.078). CONCLUSION: Closure of ASD using the Amplatzer Septal Occluder device led to a decrease in RV size and an increase in LV size. In the early period, while LV function improved, RV function deteriorated, probably due to RV functional and anatomical differences.


Assuntos
Comunicação Interatrial/patologia , Comunicação Interatrial/cirurgia , Intervenção Coronária Percutânea/métodos , Remodelação Ventricular , Adulto , Estudos de Coortes , Ecocardiografia Doppler , Feminino , Comunicação Interatrial/diagnóstico por imagem , Ventrículos do Coração/diagnóstico por imagem , Humanos , Masculino , Pessoa de Meia-Idade , Intervenção Coronária Percutânea/efeitos adversos
11.
Blood Press ; 23(4): 222-7, 2014 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-24328851

RESUMO

AIMS: In patients with hypertension (HT), increased aortic stiffness is related to higher cardiovascular morbidity and mortality. Recent investigations have shown that epicardial adipose tissue (EAT) is a new potential cardiometabolic risk factor. The aim of our study was to examine the relation between echocardiographically measured EAT thickness and aortic stiffness in patients with primary HT. METHODS: The study included 144 newly diagnosed and untreated essential hypertensive outpatients. Transthoracic echocardiographic EAT thickness and aortic stiffness measurements were performed for all study participants. Afterwards patients were divided in two groups according to their median EAT thickness values. The patients with EAT thickness of < 7 mm were included in group 1 and patients with EAT thickness of ≥ 7 mm were included in group 2. RESULTS: Aortic strain and distensibility parameters of group 2 were lower than in group 1. The aortic stiffness index of group 2 was found to be higher than group 1. Multivariate regression analysis revealed that EAT thickness was the only independent variable for all three parameters of aortic stiffness index, aortic strain and aortic distensibility. CONCLUSION: In patients with newly diagnosed primary HT, increased EAT thickness was significantly linked to impaired aortic elastic properties independently of other conventional adiposity measurements.


Assuntos
Tecido Adiposo/patologia , Ecocardiografia/métodos , Hipertensão/patologia , Obesidade/patologia , Pericárdio/patologia , Rigidez Vascular , Tecido Adiposo/diagnóstico por imagem , Adulto , Hipertensão Essencial , Feminino , Humanos , Hipertensão/diagnóstico por imagem , Hipertensão/fisiopatologia , Masculino , Obesidade/complicações , Pericárdio/diagnóstico por imagem , Pericárdio/fisiopatologia , Fatores de Risco
12.
Acta Cardiol ; 69(2): 175-84, 2014 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-24783469

RESUMO

OBJECTIVE: The objective of this study was to evaluate left atrial (LA) function in patients with obstructive sleep apnoea (OSA) receiving continuous positive airway pressure therapy (CPAP), incorporating two-dimensional speckle-tracking echocardiography (2D-STE). METHODS: Forty-five control and 117 OSA patients were enrolled in the study. They were categorized into mild, moderate and severe OSA groups according to the apnoea-hypopnoea index (AHI). All patients underwent conventional and 2D-STE. Forty-three patients with AHI greater than 20 were enrolled to receive CPAP therapy for 24 weeks. They underwent echocardiography examination at baseline, after 12 weeks and 24 weeks of CPAP therapy. RESULTS: Severe OSA patients have higher total emptying volume index (EVI) and lower total emptying fraction (EFr) (P < 0.05). LA contractile strain and strain rate values of severe OSA were greater than in the other groups (P < 0.05). Left ventricular filling pressure (E/E') increased with severity of OSA (P < 0.05). The AHI correlated positively with LA-maximal, -pre-contraction, -minimum volume index, contractile strain and strain rate and E/E' (P < 0.05). AHI correlated negatively with LA reservoir strain and strain rate, conduit strain and strain rate (P < 0.05). In the compliant CPAP group: (i) reduction in the E/E' ratio (P < 0.05); (ii) reduction in the LA volume indexes (P < 0.05); (iii) reduction in the LA-total EVI, -active EVI and -active EFr (P < 0.05); (iv) increase in the LA-passive emptying volume and -passive emptying fraction (P < 0.05); (v) increase in the LA reservoir strain, -conduit strain and strain rate (P < 0.05) were observed. CONCLUSION: LA volumetric and deformation abnormalities in OSA patients can be reversed as early as 12 weeks into CPAP therapy, with progressive improvement in LA anatomical remodelling over 24 weeks as assessed by conventional and 2D-STE.


Assuntos
Função do Átrio Esquerdo , Pressão Positiva Contínua nas Vias Aéreas , Ecocardiografia , Apneia Obstrutiva do Sono/diagnóstico por imagem , Apneia Obstrutiva do Sono/terapia , Adulto , Estudos de Coortes , Pressão Positiva Contínua nas Vias Aéreas/métodos , Ecocardiografia/métodos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Polissonografia , Estudos Prospectivos , Índice de Gravidade de Doença , Resultado do Tratamento
13.
Turk Kardiyol Dern Ars ; 42(5): 461-3, 2014 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-25080953

RESUMO

Kounis syndrome (KS) is characterized by concurrent acute coronary syndrome and allergic reaction, in which acute inflammatory mediators cause spasm and/or erosion and rupture of coronary atheromatous plaque. In this report, we remind clinicians to consider KS in patients who are subjected to allergenic substances and demonstrate acute chest pain. A 36-year-old woman had chest pain, severe dyspnea, hypotension, and symmetrical negative T waves on the anterior leads during electrocardiography approximately two hours after the use of clarithromycin. KS was considered as a possible diagnosis based on the presentation. Laboratory tests revealed an elevated level of troponin I, suggesting myocardial infarction, and an elevated level of serum tryptase level, suggesting an allergic reaction. The patient promptly underwent coronary angiography, which revealed only plaques in all main coronary arteries without any obstructive lesion. To the best of our knowledge, we report herein the first case in the literature describing an association between clarithromycin and KS.


Assuntos
Síndrome Coronariana Aguda/diagnóstico , Antibacterianos/efeitos adversos , Claritromicina/efeitos adversos , Hipersensibilidade a Drogas/diagnóstico , Síndrome Coronariana Aguda/induzido quimicamente , Síndrome Coronariana Aguda/complicações , Adulto , Diagnóstico Diferencial , Hipersensibilidade a Drogas/complicações , Eletrocardiografia , Feminino , Humanos
14.
Turk Kardiyol Dern Ars ; 42(4): 332-8, 2014 Jun.
Artigo em Turco | MEDLINE | ID: mdl-24899476

RESUMO

OBJECTIVES: Coronary artery fistula is an infrequent malformation, and the prevalence was reported as approximately 0.1-0.4% in previous studies. However, the number of studies about microfistulas from coronary arteries to the left ventricle is inadequate, especially in the Turkish population. The purpose of this study was to evaluate the prevalence and clinical features of microfistulas in subjects undergoing coronary angiography for the assessment of coronary artery disease. STUDY DESIGN: In this retrospective study, we researched the cardiac catheterization laboratory database between January 2008 and July 2013. The presence of microfistulas was established according to the following criteria: 1) direct filling of the heart cavity during selective coronary injection without interposing "capillary" phase or venous filling, and 2) visualization of small vessels interposed between the epicardial coronary vessels and the heart cavity and emptying into the heart. RESULTS: Microfistulas were found in 12 (0.11%) of the 11403 coronary angiographies. There were 7 (58.3%) female patients (mean age, 70.2±10.8 years), and contemporary severe coronary artery stenosis was noted in 2 (16.7%) patients. Chest pain was the most frequently encountered complaint, followed by dyspnea. Microfistulas originated from the left anterior descending artery (100%), circumflex artery (66.7%), and right coronary artery (58.3%). In addition, multiple microfistulas were seen in 6 (50%) patients, bilateral microfistulas in 3 (25%) patients and unilateral microfistula in 3 (25%) patients, and all of them terminated in the left ventricle. CONCLUSION: Our study found an overall incidence of microfistulas of 0.11%. Microfistula is a rare cardiac anomaly that sometimes causes cardiac symptoms; otherwise, it is detected during routine coronary angiography.


Assuntos
Anomalias dos Vasos Coronários/epidemiologia , Ventrículos do Coração/anormalidades , Fístula Vascular/epidemiologia , Idoso , Angiografia Coronária , Anomalias dos Vasos Coronários/diagnóstico por imagem , Anomalias dos Vasos Coronários/terapia , Feminino , Cardiopatias Congênitas/diagnóstico por imagem , Cardiopatias Congênitas/epidemiologia , Cardiopatias Congênitas/terapia , Humanos , Incidência , Masculino , Prevalência , Estudos Retrospectivos , Turquia/epidemiologia , Fístula Vascular/diagnóstico por imagem , Fístula Vascular/terapia
15.
Blood Press ; 22(1): 45-50, 2013 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-22747433

RESUMO

INTRODUCTION: Pulse wave velocity (PWV) is an emerging predictor in the assessment of cardiovascular risk in diseased and healthy populations. We suggest a novel method for the accurate measurement of PWV. METHOD: PWV is calculated from pulse transit time using two separate pulse recordings over a known distance. 8F sheaths were placed in the right femoral arteries and routine coronary angiographies were performed with 5F diagnostic catheters. Ascending aorta pressures were measured with right diagnostic catheter tip in the ascending aorta and synchronous femoral artery pressures were measured with the sheath in the femoral artery. The distance between the two pressure sites was calculated as follows: total length of the right diagnostic catheter-length of the catheter outside the sheath-Sheath length. RESULTS: We evaluated the PWV measured using the catheter method in 24 subjects. PWV correlated positively and independently with age (p = 0.004), coronary artery disease (p = 0.04), ascending aorta systolic pressure (p = 0.006), femoral artery systolic pressure (p = 0.008), ascending aorta pulse pressure (p = 0.003) and femoral artery pulse pressure (p = 0.04). In coronary artery disease patients, the mean PWV value was significantly higher than in patients with normal coronary arteries (12.61 ± 6.31 m/s vs 7.58 ± 2.26 m/s p = 0.04). CONCLUSION: We describe a novel and accurate but invasive method for measurement of PWV. Our results may serve as a reference for non-invasive assessment of aorta-femoral artery PWV.


Assuntos
Aorta/fisiopatologia , Doença da Artéria Coronariana/diagnóstico , Doença da Artéria Coronariana/fisiopatologia , Artéria Femoral/fisiopatologia , Análise de Onda de Pulso/métodos , Idoso , Pressão Sanguínea , Angiografia Coronária , Doença da Artéria Coronariana/diagnóstico por imagem , Feminino , Frequência Cardíaca , Humanos , Masculino , Pessoa de Meia-Idade , Fatores de Risco , Ultrassonografia , Dispositivos de Acesso Vascular
16.
Cardiol Young ; 23(2): 295-8, 2013 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-22632129

RESUMO

A 38-year-old man who had a history of percutaneous coronary artery coil occlusion was admitted to our hospital with chest pain and shortness of breath. His complaint was chest pain, which is typical. ST depressions were observed during the treadmill exercise stress test. Coronary angiography demonstrated the persistence of a coronary arteriovenous fistula and coils in the fistula. Primarily, additional coil placement inside the arteriovenous fistula was decided as the mode of treatment. The coil was first placed inside the arteriovenous fistula and then an attempt was made to detach it. However, it was unsuccessful after four trials and electrical detachment of more than 3 minutes. Finally, a 2.5 × 18-millimetre graft stent was deployed at 20 atmospheric pressure. Electrocardiographic recordings showed bizarre ST segment changes during the electrical detachment of the coil. In this report, we discuss the concealed bizarre electrocardiographic changes that were seen during coronary arteriovenous fistula occlusion.


Assuntos
Fístula Arteriovenosa/cirurgia , Anomalias dos Vasos Coronários/cirurgia , Isquemia Miocárdica/etiologia , Oclusão Terapêutica/efeitos adversos , Adulto , Eletrocardiografia , Humanos , Masculino
17.
Acta Medica (Hradec Kralove) ; 56(4): 167-9, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-24693799

RESUMO

There are various complications of prosthetic valvular surgeries. Among them, leaflet perforation should be emphasized and brought to mind when there have been eccentric valvular regurgitation. In this report, we presented 2 cases of iatrogenic aortic and mitral valve leaflet perforation after prosthetic valve surgeries.


Assuntos
Insuficiência da Valva Aórtica/cirurgia , Valva Aórtica/lesões , Ruptura Cardíaca/etiologia , Próteses Valvulares Cardíacas/efeitos adversos , Insuficiência da Valva Mitral/cirurgia , Valva Mitral/lesões , Adulto , Ecocardiografia Doppler em Cores , Ecocardiografia Transesofagiana , Feminino , Seguimentos , Ruptura Cardíaca/diagnóstico , Humanos , Masculino , Pessoa de Meia-Idade
18.
Turk Kardiyol Dern Ars ; 41(5): 389-95, 2013 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-23917003

RESUMO

OBJECTIVES: In this study, we aimed to investigate the relationship between HbA1c levels and the severity of coronary artery stenosis in patients with acute coronary syndrome (ACS) without diabetes mellitus. STUDY DESIGN: In this study, we included 65 patients (11 females, mean age: 57±11.42 years; 54 males, mean age: 54.56±8.51 years) who were diagnosed as acute myocardial infarction without diabetes mellitus. During hospitalization, fasting blood glucose, postprandial blood glucose and HbA1C were measured in each patient. Gensini score was used to assess the severity of coronary artery disease. RESULTS: Twenty patients (30.8%) had hypertension, 15 (23.1%) had impaired fasting glucose, 10 (15.3%) had combined impaired fasting and postprandial glucose, 28 had a low HDL cholesterol (45%), and 30 (46%) had abdominal obesity. Coronary angiography revealed one-vessel disease in 13 patients (20%), and two- and three-vessel disease in 52 patients (80%). There were no significant differences in terms of high-sensitive C-reactive protein (hs-CRP), total cholesterol, fasting glucose, and postprandial glucose (0.068, 0.974, 0.178, 0.677, respectively). There was no significant relation between the Gensini score and HbA1c levels (p=0.299), but there was a significant relation between the Gensini score and obesity (p=0.024). CONCLUSION: In our study, no significant relationship could be determined between the Gensini score and HbA1C, fasting and postprandial blood glucose levels, lipid profile, and hs-CRP levels in patients with nondiabetic ACSs.


Assuntos
Síndrome Coronariana Aguda , Estenose Coronária/sangue , Hemoglobinas Glicadas/metabolismo , Glicemia , HDL-Colesterol , Angiografia Coronária , Estenose Coronária/diagnóstico por imagem , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Obesidade , Índice de Gravidade de Doença
19.
Turk Kardiyol Dern Ars ; 41(2): 99-104, 2013 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-23666295

RESUMO

OBJECTIVES: Although atrial fibrillation (AF) is one of the most common rhythm disorders observed in clinical practice, a multicenter epidemiological study has not been conducted in our country. This study aimed to assess our clinical approach to AF based upon the records of the first multicenter prospective Atrial Fibrillation in Turkey: Epidemiologic Registry (AFTER) study. STUDY DESIGN: Taking into consideration the distribution of the population in our country, 2242 consecutive patients with at least one AF attack determined by electrocardiographic examination in 17 different tertiary health care centers were included in the study. Inpatients and patients that were admitted to emergency departments were excluded from the study. Epidemiological data of the patients and the treatment administered were assessed. RESULTS: The mean age of the patients was determined as 66.8 ± 12.3 years with female patients representing 60% of the study population. While the most common AF type in the Turkish population was non-valvular AF (78%), persistent/permanent AF was determined in 81% of all patients. Hypertension (%67) was the most common co-morbidity in patients with AF. While a stroke or transient ischemic attack or history of systemic thromboembolism was detected in 15.3% of the patients, bleeding history was recorded in 11.2%. Also, 50% of the patients were on warfarin treatment and 53% were on aspirin treatment at the time of the study. The effective INR level was detected in 41.3% of the patients. The most frequent cause of not receiving anticoagulant therapy was physician neglect. CONCLUSION: These results demonstrate the necessity for improved quality of physician care of patients with AF, especially with regards to antithrombotic therapy.


Assuntos
Fibrilação Atrial/epidemiologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Anticoagulantes/uso terapêutico , Aspirina/uso terapêutico , Fibrilação Atrial/complicações , Fibrilação Atrial/diagnóstico , Fibrilação Atrial/tratamento farmacológico , Eletrocardiografia , Feminino , Hemorragia/complicações , Humanos , Hipertensão/complicações , Ataque Isquêmico Transitório/complicações , Masculino , Pessoa de Meia-Idade , Inibidores da Agregação Plaquetária/uso terapêutico , Estudos Prospectivos , Fatores de Risco , Acidente Vascular Cerebral/complicações , Tromboembolia/complicações , Turquia/epidemiologia , Varfarina/uso terapêutico , Adulto Jovem
20.
ScientificWorldJournal ; 2012: 328697, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-22629130

RESUMO

Background. B-type natriuretic peptide has been shown to be a very sensitive and specific marker of heart failure. In this study, we aimed to investigate the effect of percutaneous closure of ventricular septal defects with Amplatzer septal occluders on brain natriuretic peptide levels. Methods. Between 2008 and 2011, 23 patients underwent successfully percutaneous ventricular septal defect closure in 4 cardiology centers. Brain natriuretic peptide levels were measured in nine patients (4 male, mean ages were 25.3 ± 14.3) who underwent percutaneous closure with Amplatzer occluders for membranous or muscular ventricular septal defects were enrolled in the study. Brain natriuretic peptide levels were measured one day before and one month after the closure. Patients were evaluated clinically and by echocardiography one month after the procedure. Results. Percutaneous closures of ventricular septal defects were successfully performed in all patients. There was not any significant adverse event in patients group during followup. Decrease in brain natriuretic peptide levels after closure were statistically significant (97.3 ± 78.6 versus 26.8 ± 15.6, P = 0.013). Conclusion. Brain Natriuretic Peptide levels are elevated in patients with ventricular septal defects as compared to controls. Percutaneous closure of Ventricular Septal Defect with Amplatzer occluders decreases the BNP levels.


Assuntos
Procedimentos Cirúrgicos Cardiovasculares , Comunicação Interventricular/sangue , Comunicação Interventricular/cirurgia , Peptídeo Natriurético Encefálico/sangue , Dispositivo para Oclusão Septal , Biomarcadores/sangue , Humanos , Masculino , Pessoa de Meia-Idade , Procedimentos de Cirurgia Plástica , Resultado do Tratamento
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA