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1.
Eur J Clin Invest ; 53(9): e14013, 2023 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-37144525

RESUMO

BACKGROUND: QT interval varies with the heart rate (HR), so a correction in QT calculation is needed (QTc). Atrial fibrillation (AF) is associated with elevated HR and beat-to-beat variation. AIM: To find best correlation between QTc in atrial fibrillation (AF) versus restored sinus rhytm (SR) after electrical cardioversion (ECV) (primary end point) and to determine which correction formula and method are the best to determine QTc in AF (secondary end point). METHODS: During a 3-month period, we considered patients who underwent 12-lead ECG recording and received an AF diagnosis with indication for ECV. Exclusion criteria were as follows: QRS duration >120 ms, therapy with QT-prolonging drugs, a rate control strategy and a nonelectrical cardioversion. The QT interval was corrected using Bazzett's, Framingham, Fridericia and Hodges formulas during the last ECG during AF and the first one immediately after ECV. QTc mean was calculated as mQTc (average of 10 QTc calculated beat per beat) and as QTcM (QTc calculated from the average of 10 raw QT and RR for each beat). RESULTS: Fifty consecutive patients were enrolled in the study. Bazett's formula showed a significant change in mean QTc value between the two rhythms (421.5 ± 33.9 vs. 446.1 ± 31.9; p < 0.001 for mQTc and 420.9 ± 34.1 vs. 441.8 ± 30.9; p = 0.003 for QTcM). On the contrary, in patients with SR, QTc assessed by the Framingham, Fridericia, and Hodges formulas was similar to that in AF. Furthermore, good correlations between mQTc and QTcM are present for each formula, even in AF or SR. CONCLUSIONS: During AF, Bazzett's formula, seems to be the most imprecise in QTc estimation.


Assuntos
Fibrilação Atrial , Humanos , Frequência Cardíaca/fisiologia , Eletrocardiografia/métodos , Cardioversão Elétrica
2.
Panminerva Med ; 65(1): 51-57, 2023 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-32549531

RESUMO

INTRODUCTION: The recent Sars-CoV-2 pandemic (COVID-19) has led to growing research to explain the poor clinical prognosis in some patients. While early observational studies highlighted the role of the virus in lung failure, in a second moment thrombosis emerged as a possible explanation of the worse clinical course in some patients. Despite initial difficulties in management of such patients, the constant increase of literature in the field is to date clarifying some questions from clinicians. However, several other questions need answer. EVIDENCE ACQUISITION: We performed systematic research using Embase and PubMed, inserting the keywords and mesh terms relative to the new coronavirus and to VTE: "COVID-19," "SARS," "MERS," "coronavirus," "2019 n-CoV," venous thromboembolism," "pulmonary embolism," "deep vein thrombosis," "thromboembolism," "thrombosis." Boolean operators "AND," "OR," "NOT" were used where appropriate. We found 133 articles of interest but only 20 were selected, providing the most representative information. EVIDENCE SYNTHESIS: A novel disease (COVID-19) due to severe acute respiratory syndrome coronavirus 2 (Sars-CoV-2) infection was responsible for thousands of hospitalizations for severe acute respiratory syndrome, with several cases of thrombotic complications due to excessive inflammation, platelet activation, endothelial dysfunction, and stasis. COVID-19 and hospitalizations for COVID-19 may carry several potential risk factors for thrombosis. Severe coagulation abnormalities may occur in almost all the severe and critical ill COVID-19 cases. CONCLUSIONS: Despite a strong pathophysiological rationale, the evidence in literature is not enough to recommend an aggressive antithrombotic therapy in COVID-19. However, it is our opinion that an early use, even at home at the beginning of the disease, could improve the clinical course.


Assuntos
COVID-19 , Trombose , Tromboembolia Venosa , Humanos , Anticoagulantes/uso terapêutico , COVID-19/complicações , Progressão da Doença , SARS-CoV-2 , Trombose/etiologia , Tromboembolia Venosa/diagnóstico , Tromboembolia Venosa/epidemiologia , Tromboembolia Venosa/etiologia
3.
Echocardiography ; 39(6): 768-775, 2022 06.
Artigo em Inglês | MEDLINE | ID: mdl-35524703

RESUMO

INTRODUCTION: Two-dimensional strain echocardiography (2D-SE) is a reliable method for measuring deformation of the left ventricle. AIM OF THE STUDY: Aim of the study was to determine changes in 2D-SE parameters over time collected during dipyridamole stress echo-cardiography (dipy-stress) and prognosis of patients with non-diagnostic dipy-stress results. METHODS: In the first phase of the study, assessment of a prospective enrolled population with a non-diagnostic dipy-stress test result was conducted, checking through coronary CT angiography (CCTA) the presence of coronary artery disease (CAD). In the follow-up phase, an echocardiographic re-evaluation and outcome analysis during a mean follow-up of 78 months was carried out. RESULTS: In the first phase, Global Circumferential Strain (GCS) values were similar in the CCTA positive and CCTA negative groups at rest and after stress. For Global Longitudinal Strain (GLS), there was a significant reduction (p < .0001) in the CCTA positive group compared to the CCTA negative group. After 78 ± 9 months none of the enrolled patients experimented cardiac events. Values of GCS, both at rest and after stress, did not differ statistically comparing follow-up values with baseline ones. No statistically significant changes were seen in the same analysis for GLS rest and stress values, between baseline and follow-up in the two groups. CONCLUSIONS: Performing 2D-SE during dipy-stress can detect mild CAD that conventional stress-tests miss. Patients with mild coronary stenosis may have a favorable mid-term prognosis, but efforts should be made to investigate the decrease trend in GLS, at rest and after stress, reported in this patient group.


Assuntos
Doença da Artéria Coronariana , Isquemia Miocárdica , Doença da Artéria Coronariana/diagnóstico por imagem , Ecocardiografia sob Estresse/métodos , Seguimentos , Humanos , Isquemia Miocárdica/diagnóstico por imagem , Prognóstico , Estudos Prospectivos , Reprodutibilidade dos Testes , Função Ventricular Esquerda
4.
ESC Heart Fail ; 9(1): 146-154, 2022 02.
Artigo em Inglês | MEDLINE | ID: mdl-34953050

RESUMO

AIMS: Cardiac resynchronization therapy (CRT) for heart failure (HF) recently has shown optimal results by targeting electrically delayed sites in coronary sinus (CS) branches. However this purpose often cannot be reached because of unstable left ventricular (LV) lead position. In current study were assessed the long-term effects of the novel active fixation LV lead in CS, guided by electrical delay (QLV), in patients with HF due to coronary artery disease. METHODS: One hundred eighty-five consecutive patients underwent CRT with intraoperative evaluation of QLV in the target position of the LV lead. When the novel active fixation LV lead was available, 98 consecutive patients received it, composing the Fix group. They were compared with 87 patients with a conventional passive fixation lead (No Fix group). The final LV lead position was assessed by fluoroscopy. Clinical response to CRT was assessed within a period of about 3 years: patients experiencing HF rehospitalization and death due to HF were defined as non-responders. RESULTS: There were no significant differences between groups in the final position of LV lead in left anterior oblique view (Pearson χ2  = 0.12; P = 0.73). In right anterior oblique view, a basal position was reached more in the Fix group (38%) than in the No Fix group (6.5%) (Pearson χ2  = 23.095; P < 0.001). QLV was significantly greater in the Fix group (122.6 ± 33.2 ms; SE = 3.6) than in the No Fix group (97.5 ± 37.8 ms; SE = 4.9) (t = 4.17; P < 0.001). Rehospitalizations for HF were 37 in the No Fix group and 14 in the Fix group. Deaths due to HF were 49 in the No Fix group and 18 in the Fix group. Survival analysis, assessed by Cox regression, showed that the Fix group had a better outcome both for HF rehospitalizations [hazard ratio (HR) = 0.48; 95% confidence interval (CI) = 0.25-0.9; P = 0.023] and death due to HF (HR = 0.55; 95% CI = 0.31-0.97; P = 0.04) in comparison with the No Fix group. Adjustment for baseline characteristics by multivariate analysis showed that an active fixation lead in CS, as a covariate, was still significant both for HF rehospitalizations (HR 0.46; 95% CI = 0.24-0.88; P = 0.019) and for death due to HF (HR 0.5; 95% CI = 0.28-0.9; P = 0.021). CONCLUSIONS: The novel active fixation LV lead allowed to target sites with greater QLV. Often maximum QLV was documented in basal segments, were stability of conventional passive fixation leads is not enough. Patients receiving it experienced less HF rehospitalizations and less death due to HF. Active fixation lead in CS guided by QLV can improve long-term prognosis in patients with HF due to coronary artery disease undergoing to CRT.


Assuntos
Terapia de Ressincronização Cardíaca , Insuficiência Cardíaca , Terapia de Ressincronização Cardíaca/métodos , Dispositivos de Terapia de Ressincronização Cardíaca , Insuficiência Cardíaca/terapia , Ventrículos do Coração/diagnóstico por imagem , Humanos , Resultado do Tratamento
6.
Minerva Cardiol Angiol ; 70(5): 555-562, 2022 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-33823573

RESUMO

BACKGROUND: Despite the use of optimal medical therapy, heart failure and reduced left ventricular ejection fraction (HFrEF) remains a leading cause of morbidity, mortality and health care costs. The introduction of angiotensin receptor/neprilysin inhibitors (ARNIs) had a revolutionary impact on the treatment of patients with HFrEF. The aim of the study was to monitor over time the perceived quality of life, the physical performance, the trend of BNP and NT-ProBNP and the NYHA functional class in patients with HFrEF during treatment with sacubitril/valsartan. METHODS: We enrolled 37 patients (63±10 years old, 76% men) who underwent a total of one-year follow-up. All patients underwent clinical evaluation, 6MWT, blood analysis (in particular, NT-pro-BNP and BNP, renal function test); Kansas City Cardiomyopathy Questionnaire (KCCQ) and the NYHA functional class assessment were also performed, at the beginning of the study and after 3, 6 and 12 months of therapy. RESULTS: We observed at each follow-up a significant improvement of KCCQ score, 6MWT, NT-ProBNP, BNP and NYHA class. However, analyzing the ∆% of variation of each single parameter, the improvement was not uniform in time. We also observed that only 37% of patients tolerated the full recommended dose of sacubitril/valsartan (97/103 mg b.i.d.); of the remaining, 40% tolerated the intermediate dose (49/51 mg b.i.d.) and 23% the minimum (24/26 md b.i.d.). CONCLUSIONS: Sacubitril/valsartan therapy improves significantly quality of life, physical effort resistance, BNP and NT-ProBNP and NYHA functional class in patients with HFrEF. Although not all the patients tolerated the maximum recommended dose, the beneficial effects were significant even at lower doses.


Assuntos
Insuficiência Cardíaca , Idoso , Aminobutiratos/efeitos adversos , Antagonistas de Receptores de Angiotensina/efeitos adversos , Compostos de Bifenilo/farmacologia , Compostos de Bifenilo/uso terapêutico , Feminino , Insuficiência Cardíaca/tratamento farmacológico , Humanos , Masculino , Pessoa de Meia-Idade , Neprilisina/farmacologia , Neprilisina/uso terapêutico , Pacientes Ambulatoriais , Qualidade de Vida , Receptores de Angiotensina/uso terapêutico , Volume Sistólico , Tetrazóis/efeitos adversos , Valsartana/farmacologia , Valsartana/uso terapêutico , Função Ventricular Esquerda
7.
Clin Drug Investig ; 41(2): 169-176, 2021 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-33484468

RESUMO

PURPOSE: Patients affected by heart failure with reduced ejection fraction (HFrEF) receive clinical and functional beneficial effects from treatment with sacubitril/valsartan. However previous studies have shown that patients with an implantable cardioverter defibrillator (ICD) could obtain even greater benefit, but only make up a only a small proportion of patients. In the current study we evaluated the effect of sacubitril/valsartan in patients with an ICD. METHODS: Thirty-five outpatients with HFrEF (aged 60 ± 11 years, 28 were males), on optimal medical therapy were studied. All patients received an ICD at least 6 months before enrollment or were non-responders to ICD plus resynchronization (CRT-D). An open-label sacubitril/valsartan treatment was established at the maximum tolerated dose. Clinical assessment, 6-min walk test (6MWT) and echocardiography, were performed during follow-up at 90, 180, and 360 days. Quality of life score and perceived fatigue on exercise were assessed. RESULTS: Clinical conditions dramatically improved in most patients, especially within the first 6 months of therapy (76 % were in NYHA-I and 24 % in NYHA-II at the end of study vs 71 % NYHA-II and 29 % NYHA III at enrollment, p < 0.001). Quality of life and exercise performance significantly improved according to N-terminal pro-brain natriuretic peptide (NT-proBNP) serum levels lowering. Walking distance at 6MWT increased from 274 ± 97 to 389 ± 53 m and walking speed from 0.74 ± 0.27 to 1.07 ± 0.15 m/s (p < 0.001), while oxygen saturation did not differ significantly (from 90 ± 1 % to 91 ± 2 %). More gradual was left ventricular reverse remodeling. Ejection fraction improved mildly (+ 5 points %, p < 0.001). Global longitudinal strain and diastolic function were also assessed over time. CONCLUSION: Sacubitril/valsartan therapy for HFrEF may lead to significant clinical and functional improvements even in patients with ICD at greater arrhythmic risk. Clinical improvement is obtained within the first 6 months of treatment while reverse remodeling needs more time.


Assuntos
Aminobutiratos/administração & dosagem , Desfibriladores Implantáveis , Insuficiência Cardíaca/tratamento farmacológico , Tetrazóis/administração & dosagem , Adulto , Idoso , Idoso de 80 Anos ou mais , Compostos de Bifenilo , Combinação de Medicamentos , Feminino , Humanos , Estudos Longitudinais , Masculino , Pessoa de Meia-Idade , Peptídeo Natriurético Encefálico/metabolismo , Pacientes Ambulatoriais , Fragmentos de Peptídeos/metabolismo , Qualidade de Vida , Volume Sistólico/efeitos dos fármacos , Resultado do Tratamento , Valsartana
9.
Heart Vessels ; 35(5): 637-646, 2020 May.
Artigo em Inglês | MEDLINE | ID: mdl-31712910

RESUMO

We sought to recognize the blood flow velocity (BFV) through the left anterior descending (LAD) coronary artery and its small intramyocardial (IM) branches by transthoracic Doppler-echocardiography in patients with aortic stenosis (AS). Sixty-two patients, aged 74.0 ± 9.6 years, 37 women, with preserved left ventricular (LV) function, apparently free of active ischemic disease, were enrolled and classified into 3 groups according to the mean gradient (MG) across the aortic valve: 13 patients (21%) entered the group A (MG ≤ 20 mmHg), 29 (48%) group B (MG 21-40 mmHg) and 20 (31%) group C (MG > 40 mmHg). Peak and mean coronary BFVs were demonstrated to gradually increase according to AV gradient, especially through the IM arteries. Peak IM-BFV was 58.9 cm/s (95% CI 46.4-71.4) in group A, 73.2 cm/s (95% CI 64.8-81.6) in group B, and 96.4 cm/s (95% CI 86.3-106.5) in group C (p < 0.001), whereas peak LAD-BFV was 38.1 cm/s (95% CI 32.8-43.3), 44.4 cm/s (95% CI 40.9-47.9) and 47.3 cm/s (95% CI 43.1-52.5), respectively (p = 0.03). Also, 34 patients complaining with unspecific symptoms showed much higher IM-BFV than those who were not. High values were also recognized in patients with LV ejection fraction/velocity ratio (EFVR) ≤ 0.90 (IM-BFV 91 ± 26 cm/s vs. 72 ± 24 cm/s in those with EFVR > 0.90, p = 0.001). In conclusion, AS patients in the present study showed gradually higher coronary BFVs according to AS gradient, especially through the IM vessels, and both peak and mean velocities were discriminating specific patient subsets. Pathophysiological mechanisms and potential clinical implications are discussed.


Assuntos
Estenose da Valva Aórtica/diagnóstico por imagem , Circulação Coronária , Vasos Coronários/diagnóstico por imagem , Ecocardiografia Doppler em Cores , Idoso , Idoso de 80 Anos ou mais , Estenose da Valva Aórtica/fisiopatologia , Velocidade do Fluxo Sanguíneo , Vasos Coronários/fisiopatologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Projetos Piloto , Valor Preditivo dos Testes , Prognóstico , Índice de Gravidade de Doença , Volume Sistólico , Função Ventricular Esquerda
10.
Curr Vasc Pharmacol ; 17(1): 85-91, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-29149819

RESUMO

Psoriasis (Pso) is a chronic inflammatory immune-mediated skin disease associated with several comorbidities. Despite the growing number of studies providing evidence for the link between Pso and Cardiovascular (CV) disorders, there are still many unsolved questions, dealing with the role of the skin disease as an independent risk factor for CV events, the influence of Pso severity and duration on CV damage, the presence of Psoriatic Arthritis (PsA) as a predictor of increased CV mortality and morbidity and the detection of reliable clinical, laboratory and/or instrumental parameters to stratify CV risk in psoriatic patients. Moreover, it remains to clarify if the early treatment of the dermatosis may lower CV risk. In this paper we will try to provide answers to these queries in the light of the updated data of the literature.


Assuntos
Doenças Cardiovasculares/epidemiologia , Psoríase/epidemiologia , Doenças Cardiovasculares/diagnóstico , Doenças Cardiovasculares/prevenção & controle , Humanos , Prognóstico , Psoríase/diagnóstico , Psoríase/terapia , Medição de Risco , Fatores de Risco , Índice de Gravidade de Doença
11.
J AOAC Int ; 101(4): 939-941, 2018 Jul 01.
Artigo em Inglês | MEDLINE | ID: mdl-29566776

RESUMO

It is estimated that over 1 billion people worldwide have a deficiency of vitamin D, also known as hypovitaminosis D, which the World Health Organization has defined as a public health problem. Beyond its historical homeostasis regulatory function of calcium and phosphorus, in relation to the preservation of the skeletal system, several studies show today a close connection between hypovitaminosis D and the genesis of rheumatic, autoimmune, neoplastic, and cardiovascular diseases. With exclusive reference to cardiovascular aspects, multiple heart diseases such as hypertension, myocardial ischemia, and heart failures might have deficiency in vitamin D as an important causative factor. Because of the influence of concomitant pathologies caused by antibiotic-resistant agents, the function of this vitamin should be critically evaluated. However, the role of vitamin D remains to be established; only a few studies have tested the effects of its supplementation in patients with chronic heart failure diseases, and reported results are unclear. It is important to implement studies in this field in order to assess the real benefits induced by vitamin D supplementation in cardiovascular patients and, in particular, in patients with heart failure. Should the research confirm actual clinical improvement after treatment with vitamin D, such a supplementation might represent a new low-cost therapeutic approach to improving quality of life.


Assuntos
Insuficiência Cardíaca/dietoterapia , Vitamina D/sangue , Vitamina D/uso terapêutico , Cromatografia Líquida de Alta Pressão/métodos , Suplementos Nutricionais , Insuficiência Cardíaca/etiologia , Humanos , Espectrometria de Massas em Tandem/métodos , Deficiência de Vitamina D/complicações
12.
Angiology ; 69(1): 31-37, 2018 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-29212353

RESUMO

Evidence suggests that psoriasis together with other cardiovascular (CV) risk factors is associated with increased vascular morbidity, but it is not clear whether psoriasis is an independent risk factor. Consecutive patients (n = 33; 35.6 ± 5.7 years; 13 females) with mild psoriasis (Psoriasis Area and Severity Index <10) without comorbidities and 33 healthy participants (36.3 ± 5.9 years; 15 females) were enrolled. Both groups underwent echocardiography, speckle tracking (2-dimensional strain echocardiography [2D-SE]), and pulse wave velocity (PWV) testing. Clinical and conventional echocardiographic characteristics were comparable between both groups. Global longitudinal strain (GLS) was significantly lower ( P = .002) in the psoriasis group (22.39% ± 2.28%) than in controls (24.15% ± 2.17%). The PWV was significantly lower ( P = .004) in controls (8.06 ± 1.68 m/s) than in the psoriasis group (9.23 ± 1.53 m/s). Significant correlations between GLS and disease duration ( r = -.66, P < .0001) and between GLS and patient age at diagnosis ( r = .48, P = .0043) were found. Psoriasis may be an independent CV risk factor, causing cardiac and vascular impairment. Both 2D-SE and PWV may be useful tools for the screening of CV risk in these patients.


Assuntos
Doenças Cardiovasculares/complicações , Sistema Cardiovascular/fisiopatologia , Psoríase/complicações , Rigidez Vascular/fisiologia , Adulto , Doenças Cardiovasculares/diagnóstico , Ecocardiografia/métodos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Psoríase/diagnóstico , Análise de Onda de Pulso/métodos , Fatores de Risco , Disfunção Ventricular Esquerda/fisiopatologia
14.
Curr Vasc Pharmacol ; 16(6): 528-533, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-28677509

RESUMO

INTRODUCTION: Cardiac arrhythmias are challenging diseases in childhood. Most of them in pediatric subjects (90.2%) are atrioventricular reentrant tachycardias and atrioventricular nodal reentrant tachycardias. The standard 12-lead ECG is a highly accurate diagnostic tool but an invasive electrophysiological study is often required. The main concern about this kind of procedures is their invasive nature and the need of radiations, so antiarrhythmic agents are currently the first line therapy. However, they often show side effects and can be insufficient for the rate control. MATERIALS AND METHODS: We performed a systematic research on Embase and PubMed. We found 563 articles and selected the most representative 50. DISCUSSION: Management of cardiac arrhythmias could be very difficult in several scenarios, especially in children with body weight <15 kg and age <4 years. In general, pediatric subjects show a cumulative risk of malignancy greater than adults, having greater life expectancy. On this basis the guiding principle during radiation delivery in electrophysiological procedures is "as low as reasonably achievable" (acronym: ALARA). The development of 3-dimensional (3D) electroanatomical mapping systems allowed significant reduction of exposure. The most recently reported experiences demonstrate safety and feasibility of fluoroless ablation in the most common arrhythmias in children, even in challenging conditions. CONCLUSION: The first reasonable approach in cardiac arrhythmias involving younger patients seems to be pharmacological. However antiarrhythmic drugs pose problems both in terms of side effects and often have poor efficacy. Expertise in electrophysiological techniques is constantly increasing and the development of new technologies allow us to encourage the use of electroanatomical mapping systems in order to reduce the radiation exposure in children undergoing to catheter ablation, especially for accessory pathways.


Assuntos
Antiarrítmicos/uso terapêutico , Ablação por Cateter , Técnicas Eletrofisiológicas Cardíacas , Sistema de Condução Cardíaco/fisiopatologia , Taquicardia por Reentrada no Nó Atrioventricular/diagnóstico , Taquicardia por Reentrada no Nó Atrioventricular/terapia , Potenciais de Ação/efeitos dos fármacos , Adolescente , Idade de Início , Antiarrítmicos/efeitos adversos , Ablação por Cateter/efeitos adversos , Criança , Pré-Escolar , Eletrocardiografia , Técnicas Eletrofisiológicas Cardíacas/efeitos adversos , Sistema de Condução Cardíaco/efeitos dos fármacos , Frequência Cardíaca/efeitos dos fármacos , Humanos , Lactente , Recém-Nascido , Valor Preditivo dos Testes , Doses de Radiação , Exposição à Radiação/efeitos adversos , Fatores de Risco , Taquicardia por Reentrada no Nó Atrioventricular/epidemiologia , Taquicardia por Reentrada no Nó Atrioventricular/fisiopatologia , Resultado do Tratamento
15.
J Med Case Rep ; 11(1): 97, 2017 Apr 09.
Artigo em Inglês | MEDLINE | ID: mdl-28390428

RESUMO

BACKGROUND: Atrial fibrillation is the most common cardiac arrhythmia. It is responsible for up to 20% of all ischemic strokes. Rate control and anticoagulation are crucial for atrial fibrillation management and stroke prevention. CASE PRESENTATION: We present the case of an 84-year-old Italian woman with a left atrial appendage thrombus that developed despite her use of anticoagulant therapy with warfarin for a previous pulmonary embolism. She had atrial fibrillation and heterozygosity for both factor V Leiden and methylenetetrahydrofolate reductase C677T mutation, thus creating resistance to activated protein C. Anticoagulant therapy was switched to heparin for 1 week and then to rivaroxaban. After 3 months of rivaroxaban use, the thrombus disappeared. CONCLUSIONS: This case raises the issue of the ineffectiveness of warfarin therapy in complex cases involving particular thrombophilic conditions and the possibility of using rivaroxaban as a safe and effective alternative.


Assuntos
Anticoagulantes/uso terapêutico , Apêndice Atrial/diagnóstico por imagem , Fibrilação Atrial/tratamento farmacológico , Rivaroxabana/uso terapêutico , Trombose/diagnóstico por imagem , Varfarina/efeitos adversos , Idoso de 80 Anos ou mais , Apêndice Atrial/patologia , Fibrilação Atrial/fisiopatologia , Feminino , Humanos , Trombose/tratamento farmacológico , Trombose/patologia , Resultado do Tratamento , Varfarina/administração & dosagem
16.
Circ J ; 80(9): 1998-2003, 2016 Aug 25.
Artigo em Inglês | MEDLINE | ID: mdl-27477961

RESUMO

BACKGROUND: Management of cardiac amyloidosis (CA) is related to amyloid deposition. Our aim was to assess the effect of amyloid deposition on myocardial function. METHODS AND RESULTS: Twenty-eight patients with transthyretin mutation and a group of 14 controls underwent echocardiography to quantify left ventricular (LV) dimensions, function, and global (G) longitudinal (L), radial (R) and circumferential (C) strain (S). (99m)Tc-3,3-diphosphono-1,2-propanodicarboxylic-acid-scintigraphy ((99m)Tc-DPD) was used to quantify CA. (99m)Tc-DPD revealed accumulation in 14/28 patients (CA group) and no accumulation (no-CA group) in 14. Cardiac accumulation was lower-than-bone uptake in 5 (mild-CA group) and higher-than-bone uptake in 9 (severe-CA group). Ejection fraction was similar among groups. GLS was lower (P<0.001) in the severe-CA group (-12.2±4.5) with respect to the no-CA group (-19.3±3.0) and to the control group (-20.9±2.5). Conversely, GCS and GRS were lower (P<0.05) in the mild-CA group (-10.8±4.1 and 9.5±5.7, respectively) with respect to the severe-CA group (-18.9±5.1 and 23.9±6.3 respectively), no-CA group (-19.2±4.1 and 28.4±10.2, respectively) and the control group (-23.9±4.4 and 29.9±8.7, respectively). A correlation was found between the scintigraphic heart retention index (HRI) and LV septal thickness (ρ=0.72), E/E' (ρ=0.46) and GLS (ρ=-0.40). CONCLUSIONS: Myocardial deformation is impaired in a different stage of CA. The (99m)Tc-DPD HRI correlated well with morphologic, diastolic and strain abnormalities. (Circ J 2016; 80: 1998-2003).


Assuntos
Neuropatias Amiloides Familiares , Amiloide/metabolismo , Ventrículos do Coração , Miocárdio/metabolismo , Medronato de Tecnécio Tc 99m/administração & dosagem , Tomografia Computadorizada de Emissão , Adulto , Neuropatias Amiloides Familiares/diagnóstico por imagem , Neuropatias Amiloides Familiares/metabolismo , Feminino , Ventrículos do Coração/diagnóstico por imagem , Ventrículos do Coração/metabolismo , Humanos , Masculino , Pessoa de Meia-Idade , Medronato de Tecnécio Tc 99m/farmacocinética
17.
Circ J ; 80(8): 1830-7, 2016 Jul 25.
Artigo em Inglês | MEDLINE | ID: mdl-27350016

RESUMO

BACKGROUND: We sought to assess left atrial (LA) morphology and function in patients with transthyretin cardiac amyloidosis (TTR-CA) and hypertrophic cardiomyopathy (HCM). Primarily, longitudinal deformation (reservoir) and pump function were the focus of vector-velocity strain echocardiography imaging. METHODS AND RESULTS: The study group comprised 32 patients (mean age 57.7±15.4 years, 16 in each group), and 15 healthy controls. Diagnosis of TTR-CA was based on echocardiography and either gadolinium-enhanced (LGE) cardiac magnetic resonance (cMRI) or radionuclide imaging. At baseline, there were no differences in age, body surface area, blood pressure and risk factors among the groups. Left ventricular (LV) mass was greater in patients than in controls, and slight LA dilatation was found in the TTR-CA group. LA reservoir was 14.1±4.7% in TTR-CA, 20.0±5.6% in HCM, and 34.0±11.8% in controls (<0.001). In addition, LA pump function chiefly was impaired in the former group, irrespective of LA chamber size and LV ejection fraction. LGE in the atrial wall was seen in 9/10 TTR-CA versus 0/8 HCM patients undergoing cMRI (P<0.001). LA reservoir ≤19% and pump function ≤-1.1% best discriminated TTR-CA from HCM patients in the receiver-operating characteristic analysis. CONCLUSIONS: LA reservoir and pump function were significantly impaired in both TTR-CA and HCM patients compared with controls, but mainly in the former group, irrespective of LA volume and LV ejection fraction, likely caused by a more altered LA wall structure. (Circ J 2016; 80: 1830-1837).


Assuntos
Neuropatias Amiloides Familiares , Cardiomegalia , Imageamento por Ressonância Magnética , Volume Sistólico , Tomografia Computadorizada de Emissão , Adulto , Idoso , Neuropatias Amiloides Familiares/diagnóstico por imagem , Neuropatias Amiloides Familiares/fisiopatologia , Cardiomegalia/diagnóstico por imagem , Cardiomegalia/fisiopatologia , Estudos de Casos e Controles , Feminino , Átrios do Coração/diagnóstico por imagem , Átrios do Coração/fisiopatologia , Humanos , Masculino , Pessoa de Meia-Idade
18.
Am J Cardiol ; 116(7): 1122-7, 2015 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-26253999

RESUMO

Early noninvasive identification of cardiac amyloidosis (CA) is of growing clinical importance. Low voltage on electrocardiogram (ECG), increased left ventricular (LV) septal thickness (ST), and global longitudinal strain (GLS) on echocardiography, and elevated brain natriuretic peptides (BNP) are used as surrogates of CA. Thirty-five patients (50 ± 14 years, 22 women) underwent electrocardiography to analyze low-voltage QRS (<15 mV) pathologic Q waves, poor R-wave progression, ST-T abnormalities, and left bundle branch block. An ECG was considered abnormal if at least one ECG alteration was present. Echocardiography was used to analyze LVST, E/E', and GLS. All participants also had BNP blood testing. (99m)Tc-3,3-diphosphono-1,2 propanodicarboxylic acid scintigraphy assumed as a reference method showed CA in 18 patients (51%, CA group) and no accumulation in 17 patients (no CA group). In descending order of accuracy, LVST >14 mm, E/E' >6.6, GLS <14.1, BNP >129 pg/ml, and an overall abnormal ECG showed good capability to distinguish patients with and without CA. All these parameters were predictors of CA in univariate analysis, whereas low-voltage QRS showed the worst performance. LVST >14 mm (p = 0.002) was the best independent predictor of CA, achieving sensitivity of 78% and accuracy of 89%. However, an LVST >14 mm (p = 0.005) plus an abnormal ECG (p = 0.03) show together a greater sensitivity, equal to 89%, in identifying CA. An integrated evaluation of ECG and echocardiography is a sensitive and low-cost technical approach to identify CA in patients with transthyretin gene mutation.


Assuntos
Amiloidose/diagnóstico , Ecocardiografia , Eletrocardiografia , Cardiopatias/diagnóstico , Mutação , Peptídeo Natriurético Encefálico/sangue , Pré-Albumina/genética , Adulto , Idoso , Amiloidose/genética , DNA/genética , Análise Mutacional de DNA , Diagnóstico Precoce , Feminino , Seguimentos , Cardiopatias/genética , Humanos , Masculino , Pessoa de Meia-Idade , Pré-Albumina/metabolismo , Tomografia Computadorizada de Emissão de Fóton Único , Imagem Corporal Total
20.
World J Cardiol ; 6(9): 1038-40, 2014 Sep 26.
Artigo em Inglês | MEDLINE | ID: mdl-25276304

RESUMO

Usually, cardiac calcifications are observed in aortic and mitral valves, atrio-ventricular plane, mitral annulus, coronary arteries, pericaridium (usually causing constrictive pericarditis) and cardiac masses. Calcifications of atrial walls are unusual findings that can be identified only using imaging with high spatial resolution, such as cardiac magnetic resonance and computed tomography. We report a case of a 43-year-old patient with no history of heart disease that underwent cardiac evaluation for mild dyspnoea. The echocardiogram showed a calcific aortic valve and a hyper-echogenic lesion located in atrio-ventricular plane. The patient was submitted to cardiac magnetic resonance and to computed tomography imaging to better characterize the localization of mass. The clinical features and location of calcified lesion suggest an infective aetiology causing an endocarditis involving the aortic valve, atrio-ventricular plane and left atrium. Although we haven't data to support a definite and clear diagnosis, the clinical features and location of the calcified lesion suggest an infective aetiology causing an endocarditis involving the aortic valve, atrio-ventricular plane and left atrium. The patient was followed for 12 mo both clinically and by electrocardiogram and echocardiography without worsening of clinical, electrocardiographic and echocardiographic data. Cardiac magnetic resonance imaging and computed tomography are ideal methods for identifying and following over time patients with calcific degeneration in the heart.

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