RESUMO
BACKGROUND: Adverse cardiac remodeling is a major risk factor for the development of post myocardial infarction (MI) heart failure (HF). This study investigates the effects of the chymase inhibitor fulacimstat on adverse cardiac remodeling after acute ST-segment-elevation myocardial infarction (STEMI). METHODS: In this double-blind, randomized, placebo-controlled trial patients with first STEMI were eligible. To preferentially enrich patients at high risk of adverse remodeling, main inclusion criteria were a left-ventricular ejection fraction (LVEF) ≤45% and an infarct size >10% on day 5 to 9 post MI as measured by cardiac MRI. Patients were then randomized to 6 months treatment with either 25 mg fulacimstat (nâ¯=â¯54) or placebo (nâ¯=â¯53) twice daily on top of standard of care starting day 6 to 12 post MI. The changes in LVEF, LV end-diastolic volume index (LVEDVI), and LV end-systolic volume index (LVESVI) from baseline to 6 months were analyzed by a central blinded cardiac MRI core laboratory. RESULTS: Fulacimstat was safe and well tolerated and achieved mean total trough concentrations that were approximately tenfold higher than those predicted to be required for minimal therapeutic activity. Comparable changes in LVEF (fulacimstat: 3.5%⯱â¯5.4%, placebo: 4.0%⯱â¯5.0%, Pâ¯=â¯.69), LVEDVI (fulacimstat: 7.3⯱â¯13.3 mL/m2, placebo: 5.1⯱â¯18.9 mL/m2, Pâ¯=â¯.54), and LVESVI (fulacimstat: 2.3⯱â¯11.2 mL/m2, placebo: 0.6⯱â¯14.8 mL/m2, Pâ¯=â¯.56) were observed in both treatment arms. CONCLUSION: Fulacimstat was safe and well tolerated in patients with left-ventricular dysfunction (LVD) after first STEMI but had no effect on cardiac remodeling.
Assuntos
Quimases/antagonistas & inibidores , Insuficiência Cardíaca/tratamento farmacológico , Ventrículos do Coração/diagnóstico por imagem , Infarto do Miocárdio com Supradesnível do Segmento ST/tratamento farmacológico , Função Ventricular Esquerda/fisiologia , Remodelação Ventricular/efeitos dos fármacos , Método Duplo-Cego , Feminino , Insuficiência Cardíaca/diagnóstico , Insuficiência Cardíaca/etiologia , Ventrículos do Coração/fisiopatologia , Humanos , Imagem Cinética por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Infarto do Miocárdio com Supradesnível do Segmento ST/complicações , Infarto do Miocárdio com Supradesnível do Segmento ST/fisiopatologia , Volume Sistólico/fisiologia , Resultado do TratamentoRESUMO
BACKGROUND: Acute myocarditis carries a variable prognosis. We evaluated the morbidity and mortality rates in patients with acute myocarditis and admission electrocardiographic predictors of outcome. METHODS AND RESULTS: Patients admitted to a tertiary hospital with a clinical diagnosis of acute myocarditis were evaluated; 193 patients were included. Median follow-up was 5.7 years, 82% were male, and overal median age was 30 years (range 21-39). The most common clinical presentations were chest pain (77%) and fever (53%). The 30-day survival rate was 98.9%. Overall survival during follow-up was 94.3%. The most common abnormalities observed on electrocardiography were T-wave changes (36%) and ST-segment changes (32%). Less frequent changes included abnormal T-wave axis (>105° or < -15°; 16%), abnormal QRS axis (12%), QTc >460 ms (11%), and QRS interval ≥120 ms (5%). Wide QRS-T angle (≥100°) was demonstrated in 13% of the patients and was associated with an increased mortality rate compared with patients with a narrow QRS-T angle (20% vs 4%; P = .007). The rate of heart failure among patients with a wide QRS-T angle was significantly higher (36% vs 10%; P = .001). Cox regression analysis demonstrated that a wide QRS-T angle (≥100°) was a significant independent predictor of heart failure (hazard ratio [HR] 3.20, 95% confidence interval [CI] 1.35-7.59; P < .01) and of the combined end point of death or heart failure (HR 2.56, 95% CI 1.14-5.75; P < .05). CONCLUSIONS: QRS-T angle is a predictor of increased morbidity and mortality in acute myocarditis.
Assuntos
Eletrocardiografia/mortalidade , Miocardite/mortalidade , Miocardite/fisiopatologia , Doença Aguda , Adulto , Eletrocardiografia/tendências , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Morbidade/tendências , Mortalidade/tendências , Miocardite/diagnóstico , Valor Preditivo dos Testes , Estudos Retrospectivos , Adulto JovemRESUMO
Acute myocarditis is one of the most challenging diseases to diagnose and treat in cardiology. The true incidence of the disease is unknown. Viral infection is the most common etiology. Modern techniques have improved the ability to diagnose specific viral pathogens in the myocardium. Currently, parvovirus B19 and adenoviruses are most frequently identified in endomyocardial biopsies. Most patients will recover without sequelae, but a subset of patients will progress to chronic inflammatory and dilated cardiomyopathy. The pathogenesis includes direct viral myocardial damage as well as autoimmune reaction against cardiac epitopes. The clinical manifestations of acute myocarditis vary widely--from asymptomatic changes on electrocardiogram to fulminant heart failure, arrhythmias and sudden cardiac death. Magnetic resonance imaging is emerging as an important tool for the diagnosis and follow-up of patients, and for guidance of endomyocardial biopsy. In the setting of acute myocarditis endomyocardial biopsy is required for the evaluation of patients with a clinical scenario suggestive of giant cell myocarditis and of those who deteriorate despite supportive treatment. Treatment of acute myocarditis is still mainly supportive, except for giant cell myocarditis where immunotherapy has been shown to improve survival. Immunotherapy and specific antiviral treatment have yet to demonstrate definitive clinical efficacy in ongoing clinical trials. This review will focus on the clinical manifestations, the diagnostic approach to the patient with clinically suspected acute myocarditis, and an evidence-based treatment strategy for the acute and chronic form of the disease.
Assuntos
Antivirais/uso terapêutico , Cardiomiopatia Dilatada , Imunoterapia/métodos , Miocardite , Miocárdio , Viroses , Doença Aguda , Adenoviridae/isolamento & purificação , Biópsia , Cardiomiopatia Dilatada/etiologia , Cardiomiopatia Dilatada/imunologia , Cardiomiopatia Dilatada/prevenção & controle , Ensaios Clínicos como Assunto , Morte Súbita Cardíaca/patologia , Morte Súbita Cardíaca/prevenção & controle , Progressão da Doença , Eletrocardiografia , Prática Clínica Baseada em Evidências , Insuficiência Cardíaca/etiologia , Humanos , Imageamento por Ressonância Magnética , Miocardite/diagnóstico , Miocardite/mortalidade , Miocardite/fisiopatologia , Miocardite/terapia , Miocardite/virologia , Miocárdio/imunologia , Miocárdio/patologia , Parvovirus B19 Humano/isolamento & purificação , Viroses/complicações , Viroses/diagnósticoRESUMO
BACKGROUND: Patients with heart failure (HF) have a poor prognosis. Heart failure centers with specialized nurse-supervised management programs have been proposed to improve prognosis. OBJECTIVES: To evaluate the clinical outcome of patients with HF treated at a multidisciplinary HF center of Clalit Health Services in Jerusalem in collaboration with Hadassah University Hospital. METHODS: We evaluated clinical outcome including hospitalizations and death in all HF patients followed at the HF center for 1 year. RESULTS: Altogether, 324 patients were included and followed at the HF center; 58% were males with a mean age of 76 +/- 11 years, and 58% were in New York Heart Association (NYHA) functional class Ill-IV. The overall 1 year survival rate was 91% and the 1 year hospitalization rate 29%. Comparing patients in the HF center to the whole cohort of patients with a diagnosis of HF (N = 6618) in Clalit Health Services in Jerusalem demonstrated a similar 1 year survival rate: 91% vs. 89% respectively but with a significantly reduced hospitalization rate: 29% vs. 42% respectively (P < 0.01). Cox regression analysis demonstrated that treatment in the HF center was a significant predictor of reduced hospitalization after adjustment for other predictors (hazard ratio 0.65, 95% confidence interval 0.53-0.80, P < 0.0001). A subset of patients that was evaluated (N = 78) showed significantly increased compliance. NYHA class improved in these patients from a mean of 3.1 +/- 0.1 to 2.6 +/- 0.1 after treatment (P < 0.0001). CONCLUSIONS: Supervision by dedicated specialized nurses in a HF center increased compliance, improved functional capacity in HF patients, and reduced hospitalization rate. HF centers should be considered part of the standard treatment of patients with symptomatic HF.
Assuntos
Institutos de Cardiologia/organização & administração , Continuidade da Assistência ao Paciente , Insuficiência Cardíaca/mortalidade , Insuficiência Cardíaca/terapia , Equipe de Assistência ao Paciente , Idoso , Cardiotônicos/uso terapêutico , Aconselhamento , Dieta , Feminino , Insuficiência Cardíaca/classificação , Hospitalização/estatística & dados numéricos , Humanos , Israel , Masculino , Recursos Humanos de Enfermagem Hospitalar , Cooperação do Paciente , Análise de Regressão , AutocuidadoRESUMO
BACKGROUND: A seasonal variation in hospital admissions in patients with heart failure (HF) has been described and most admissions occur during the winter season. The effect of this seasonal variation on prognosis is less clear. OBJECTIVES: To evaluate the effect of the seasonal timing of hospital admission on clinical outcome in patients with HF. METHODS: We prospectively enrolled 362 consecutive patients hospitalized with a definite clinical diagnosis of HF during a 2-year period. Patients were followed clinically for a period of 1 year. RESULTS: There was a prominent seasonal variation in hospital admissions in patients with HF with peak admissions during the winter. The admission rate inversely correlated with the average monthly temperature. Admission during the summer season was a significant predictor of reduced survival (59 vs. 75%, p < 0.01). Cox regression analysis demonstrated that independent predictors of reduced survival after adjustment for other predictors were admission during the hottest 6 months or admission during the summer. In addition, increased mean environmental admission temperature was an independent predictor of reduced survival. CONCLUSIONS: Seasonal temperature has a significant effect on the rate of hospital admission in patients with HF. Admission during warmer weather is a sign of a poor prognosis.
Assuntos
Insuficiência Cardíaca/mortalidade , Hospitalização/estatística & dados numéricos , Estações do Ano , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , MasculinoRESUMO
Scytalidium dimidiatum, a dematiaceous fungus, has been well established as an agent of dermatomycosis. There are few reports of invasive infection caused by S. dimidiatum; most infections occurred in immunocompromised hosts. We present an immunocompetent patient with pleural S. dimidiatum infection and review nine other published cases of invasive S. dimidiatum infections.
Assuntos
Ascomicetos/isolamento & purificação , Micoses/diagnóstico , Pleurisia/microbiologia , Antifúngicos/uso terapêutico , DNA Fúngico/química , DNA Fúngico/genética , DNA Ribossômico/química , DNA Ribossômico/genética , Genes de RNAr , Humanos , Masculino , Pessoa de Meia-Idade , Dados de Sequência Molecular , Micoses/microbiologia , Filogenia , RNA Fúngico/genética , RNA Ribossômico 28S/genética , Análise de Sequência de DNARESUMO
Blood group systems based on red blood cell antigens are genetically determined and can identify patients at risk. Type non-O of the ABO blood group system has been associated with coronary artery disease, thrombosis, and a worse prognosis. The present study evaluated the distribution of blood group types in patients with heart failure (HF) and the impact on clinical outcome. We evaluated the ABO and Rhesus D antigen (RhD) blood types in a large cohort of chronic HF patients (n = 3,815). ABO blood type distribution in the HF population was not significantly different to that reported in the general national population (A 40%, B 20%, AB 8%, and O 33%). The percentage of Rh-negative per blood type was also similar (A 10%, B 9%, AB 10%, and O 7%). Patients with type O were more likely to be hypertensive compared with non-O type. Mean follow-up was 4.2 years. Overall survival during follow-up was 55%. Cox regression analysis after adjustment for significant predictors demonstrated that RhD-negative was associated with a worse prognosis in patients with ischemic cardiomyopathy (n = 2,881, 76%): hazard ratio 1.26, 95% confidence interval 1.04 to 1.53, p = 0.02. Type non-O was also independently associated with a worse prognosis compared with type O in patients with non-ischemic cardiomyopathy: hazard ratio 1.32, 95% confidence interval 1.04 to 1.67, p = 0.02. In conclusion, blood group type distribution in HF patients are similar to the general population. RhD-negative is associated with a worse prognosis in patients with ischemic cardiomyopathy.
Assuntos
Sistema ABO de Grupos Sanguíneos , Insuficiência Cardíaca/sangue , Sistema do Grupo Sanguíneo Rh-Hr/sangue , Idoso , Idoso de 80 Anos ou mais , Progressão da Doença , Feminino , Seguimentos , Insuficiência Cardíaca/epidemiologia , Humanos , Israel/epidemiologia , Masculino , Prognóstico , Taxa de Sobrevida/tendências , Fatores de TempoRESUMO
Effective antirejection therapy and infection control have significantly improved the long-term survival of heart transplant recipients, but coronary allograft vasculopathy remains an important limiting factor. Most heart transplant recipients undergo annual coronary angiography for the detection of allograft vasculopathy, which is often clinically silent. Angiography allows detection of vasculopathy only indirectly, with depiction of the lumen, and does not depict the wall thickening and intimal hyperplasia that typify this disease; the procedure also is invasive and is associated with a 1%-2% risk of complication. In contrast, electrocardiographically gated multidetector computed tomography (CT) can provide a comprehensive and noninvasive evaluation of the transplanted heart in a single study. Cardiac CT enables evaluation of the coronary artery lumen and wall and thus may be used for screening, diagnosis, grading, and follow-up of coronary allograft vasculopathy. It also may be used to detect other posttransplantation complications, such as malignancy and infection, and to assess cardiac and vascular anastomoses and cardiac function. However, special strategies may be needed to reduce the transplant heart rate so as to obtain images of diagnostic quality.
Assuntos
Doença da Artéria Coronariana/diagnóstico por imagem , Doença da Artéria Coronariana/etiologia , Rejeição de Enxerto/diagnóstico por imagem , Rejeição de Enxerto/etiologia , Transplante de Coração/efeitos adversos , Transplante de Coração/diagnóstico por imagem , Tomografia Computadorizada por Raios X/métodos , Feminino , Coração/diagnóstico por imagem , Humanos , Masculino , Pessoa de Meia-Idade , Guias de Prática Clínica como Assunto , Padrões de Prática MédicaRESUMO
BACKGROUND: Femoral artery vascular complications are the most common adverse events following cardiac catheterization. Smaller diameter introducer sheaths and catheters are likely to lower the puncture site complication rate but may hinder visualization. OBJECTIVES: To evaluate the safety and angiographic quality of 4 French catheters. METHODS: The study was designed to simulate real-life operator-based experience. Diagnostic angiography was performed with either 4F or 6F diagnostic catheters; the size of the catheter used in each patient was predetermined by the day of the month. Patients undergoing 4F and 6F diagnostic angiography were ambulated after 4 and 6 hours, respectively. The following technical parameters were recorded by the operator: ease of introducer sheath insertion, ease of coronary intubation, ease of injection, coronary opacification, collateral flow demonstration, and overall assessment. Adverse events were recorded in all patients and included minor bleeding, major bleeding (necessitating blood transfusion), minor hematoma, major hematoma, pseudo-aneurysm formation and arteriovenous fistula. RESULTS: The study group included 177 patients, of whom 91 were in the 4F arm and 86 in the 6F arm. Demographic and procedural data were similar in both groups. Seventy-seven percent of 6F and 50% of 4F procedures were evaluated as excellent (P < 0.05). This difference was attributed to easier intubation of the coronary ostium and contrast material injection, increased opacification of the coronary arteries, and demonstration of collateral flow with 6F catheters. Complications occurred in 22% of patients treated with 6F catheters and in 10% of those treated with 4F catheters (P = 0.11). Of the 50 patients who switched from 4F to 6F 12% had complications. In patients undergoing diagnostic angiography, the complication rate was 10% vs. 27% (most of them minor) in the 4F and 6F groups, respectively (P < 0.05). CONCLUSIONS: Patients catheterized with 4F have fewer complications compared with 6F diagnostic catheters even when ambulated earlier. Although 4F had a reduced quality compared to 6F angiographies, they were evaluated as satisfactory or excellent in quality 85% of the time. 4F catheters have a potential for reduced hospitalization stay and are a good option for primary catheterization in patients not anticipated to undergo coronary intervention.
Assuntos
Cateterismo Periférico/instrumentação , Angiografia Coronária/métodos , Isquemia Miocárdica/diagnóstico por imagem , Meios de Contraste/administração & dosagem , Desenho de Equipamento , Feminino , Artéria Femoral , Seguimentos , Humanos , Injeções Intra-Arteriais , Masculino , Pessoa de Meia-Idade , Reprodutibilidade dos Testes , Estudos RetrospectivosRESUMO
BACKGROUND: Many patients with heart failure need anticoagulants, including warfarin. Good control is particularly challenging in heart failure patients, with <60% of international normalized ratio (INR) measurements in the therapeutic range, thereby increasing the risk of complications. This study aimed to evaluate the effect of a patient-specific tailored intervention on anticoagulation control in patients with heart failure. METHODS: Patients with heart failure taking warfarin therapy (n = 145) were randomized to either standard care or a 1-time intervention assessing potential risk factors for lability of INR, in which they received patient-specific instructions. Time in therapeutic range (TTR) using Rosendaal's linear model was assessed 3 months before and after the intervention. RESULTS: The patient-tailored intervention significantly increased anticoagulation control. The median TTR levels before intervention were suboptimal in the interventional and control groups (53% vs 45%, P = .14). After intervention the median TTR increased significantly in the interventional group compared with the control group (80% [interquartile range, 62%-93%] vs 44% [29%-61%], P <.0001). The intervention resulted in a significant improvement in the interventional group before versus after intervention (53% vs 80%, P <.0001) but not in the control group (45% vs 44%, P = .95). The percentage of patients with a TTR ≥60%, considered therapeutic, was substantially higher in the interventional group: 79% versus 25% (P <.0001). The INR variability (standard deviation of each patient's INR measurements) decreased significantly in the interventional group, from 0.53 to 0.32 (P <.0001) after intervention but not in the control group. CONCLUSIONS: Patient-specific tailored intervention significantly improves anticoagulation therapy in patients with heart failure.
Assuntos
Monitoramento de Medicamentos/normas , Insuficiência Cardíaca/tratamento farmacológico , Coeficiente Internacional Normatizado/normas , Medicina de Precisão/normas , Varfarina/administração & dosagem , Idoso , Anticoagulantes/administração & dosagem , Anticoagulantes/efeitos adversos , Anticoagulantes/uso terapêutico , Comorbidade , Monitoramento de Medicamentos/métodos , Feminino , Insuficiência Cardíaca/complicações , Humanos , Israel , Modelos Lineares , Masculino , Medicina de Precisão/métodos , Fatores de Tempo , Varfarina/efeitos adversos , Varfarina/uso terapêuticoAssuntos
Células Gigantes/patologia , Linfócitos/patologia , Miocardite/patologia , Miocardite/terapia , Choque Cardiogênico/etiologia , Disfunção Ventricular Direita/patologia , Doença Aguda , Antagonistas Adrenérgicos beta/administração & dosagem , Idoso , Inibidores da Enzima Conversora de Angiotensina/administração & dosagem , Biópsia , Administração de Caso , Diagnóstico Diferencial , Feminino , Furosemida/administração & dosagem , Testes de Função Cardíaca/métodos , Humanos , Balão Intra-Aórtico/métodos , Miocardite/metabolismo , Miocardite/fisiopatologia , Índice de Gravidade de Doença , Choque Cardiogênico/fisiopatologia , Choque Cardiogênico/terapia , Resultado do Tratamento , Troponina T/metabolismoRESUMO
BACKGROUND: Hyperuricemia and gout are common complications of heart transplantation, reaching a prevalence of 84% and 30%, respectively, in heart transplant recipients. In contrast, they are seldom reported following orthotopic liver transplantation (OLT). METHODS: We retrospectively evaluated 75 consecutive liver transplant recipients and 47 consecutive heart transplant recipients, followed for at least 3 years after transplantation in a single transplantation center in Jerusalem, Israel. Data was collected on demographic and clinical variables, levels of uric acid, the occurrence of gout, renal function, and variables effecting hyperuricemia, such as weight and medications. RESULTS: Clinical gout was significantly more prevalent in heart recipients than in liver recipients (25.5% and 2.6%, respectively). Hyperuricemia was present in 100% of heart recipients, with an average uric acid level of 451 micromol/l, as compared with 85.7% and 403 micromol/l for liver recipients (P < 0.001 for both variables). Univariate analysis identified several parameters which significantly influenced the difference in hyperuricemia and gout among the two groups including age, gender, rejection episodes, hypertension, diabetes mellitus, the level of uric acid prior to transplantation, and the use of cyclosporine A, diuretics, steroids, and aspirin. Use of tacrolimus and azathioprine were associated with decreased incidence of hyperuricemia and gout. Multivariate analysis identified the type of transplantation as the only independent risk factor predicting the development of hyperuricemia and gout. CONCLUSION: Clinical gout and hyperuricemia were significantly more prevalent in heart recipients than in liver recipients. The disparity can be explained by differences in age, gender and renal function among the groups, as well as by the use of different medication regimens.
Assuntos
Gota/epidemiologia , Transplante de Coração/estatística & dados numéricos , Hiperuricemia/epidemiologia , Transplante de Fígado/estatística & dados numéricos , Insuficiência Renal/epidemiologia , Adulto , Idoso , Feminino , Seguimentos , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Período Pós-OperatórioRESUMO
AIMS: Vitamin D deficiency is a highly prevalent, global phenomenon. The prevalence in heart failure (HF) patients and its effect on outcome are less clear. We evaluated vitamin D levels and vitamin D supplementation in patients with HF and its effect on mortality. METHODS AND RESULTS: 25-Hydroxyvitamin D [25(OH)D] levels were evaluated in HF patients from a health maintenance organization (HMO), and compared them with those of the rest of the members of the HMO. Patients with HF (n = 3009) had a lower median 25(OH)D level compared with the control group (n = 46 825): 36.9 nmol/L (interquartile range 23.2-55.9) vs. 40.7 nmol/L (26.7-56.9), respectively, P < 0.00001. The percentage of patients with vitamin D deficiency [25(OH)D <25 nmol/L] was higher in patients with HF compared with the control group (28% vs. 22%, P < 0.00001). Only 8.8% of the HF patients had optimal 25(OH)D levels (≥75 nmol/L). Median clinical follow-up was 518 days. Cox regression analysis demonstrated that vitamin D deficiency was an independent predictor of increased mortality in patients with HF [hazard ratio (HR) 1.52, 95% confidence interval (CI) 1.21-1.92, P < 0.001] and in the control group (HR 1.91, 95% CI 1.48-2.46, P < 0.00001). Vitamin D supplementation was independently associated with reduced mortality in HF patients (HR 0.68, 95% CI 0.54-0.85, P < 0.0001). Parameters associated with vitamin D deficiency in HF patients were decreased previous solar radiation exposure, body mass index, diabetes, female gender, pulse, and decreased calcium and haemoglobin levels. CONCLUSIONS: Vitamin D deficiency is highly prevalent in HF patients and is a significant predictor of reduced survival. Vitamin D supplementation was associated with improved outcome.
Assuntos
Suplementos Nutricionais , Insuficiência Cardíaca/patologia , Deficiência de Vitamina D/patologia , Vitamina D/uso terapêutico , Idoso , Intervalos de Confiança , Feminino , Insuficiência Cardíaca/tratamento farmacológico , Insuficiência Cardíaca/mortalidade , Humanos , Israel/epidemiologia , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Prevalência , Prognóstico , Estudos Prospectivos , Estatísticas não Paramétricas , Análise de Sobrevida , Resultado do Tratamento , Deficiência de Vitamina D/complicações , Deficiência de Vitamina D/epidemiologiaRESUMO
BACKGROUND: Asthma is characterized by bronchial hyperreactivity and airway remodeling. Subepithelial fibrosis, a feature of remodeling, is accompanied by activation of fibroblasts to myofibroblasts, with excessive proliferation and increased collagen, extracellular matrix protein, and profibrogenic cytokine production. Mast cells are important in the development of asthma and its fibrotic changes. OBJECTIVE: In this study, we aimed to investigate the direct effect of the drugs most frequently used in asthma, that is, glucocorticosteroids (dexamethasone) and shortacting ß(2)-agonists (salbutamol), on human lung fibroblast proliferation when unstimulated or activated by mast cells or eotaxin. METHODS: Subconfluent human fetal lung or bronchial fibroblasts were incubated with different concentrations of the drugs (24 h) 6 activators, and [(3)H]-Thymidine was added (24 h) to measure their proliferation. IL-6 production in the supernatants of confluent monolayers cultured in the presence of the drugs or forskolin (24 h) was analyzed by enzyme-linked immunosorbent assay. RESULTS: Both drugs alone and in the presence of the activators enhanced fibroblast proliferation in a seemingly synergistic way for both fetal and bronchial fibroblasts. Dexamethasone was found to decrease IL-6 production, while salbutamol increased it. CONCLUSIONS: These observations if corroborated by in vivo data may possibly account for the deleterious effect of long-term therapy with ß(2)-bronchodilators and inhaled glucocorticosteroids on the natural history of asthma.
RESUMO
Renal function and urea are frequently abnormal in patients with heart failure (HF) and are predictive of increased mortality. The relative importance of each parameter is less clear. We prospectively compared the predictive value of renal function and serum urea on clinical outcome in patients with HF. Patients hospitalized with definite clinical diagnosis of HF (n = 355) were followed for short-term (1 yr) and long-term (mean, 6.5 yr) survival and HF rehospitalization. Increasing tertiles of discharge estimated glomerular filtration rate (eGFR) were an independent predictor of increased long-term survival (hazard ratio [HR], 0.65; 95% confidence interval [CI], 0.47-0.91; p = 0.01) but not short-term survival. Admission and discharge serum urea and blood urea nitrogen (BUN)/creatinine ratio were predictors of reduced short- and long-term survival on multivariate Cox regression analysis. Increasing tertiles of discharge urea were a predictor of reduced 1-year survival (HR, 2.13; 95% CI, 1.21-3.73; p = 0.009) and long-term survival (HR, 1.93; 95% CI, 1.37-2.71; p < 0.0001). Multivariate analysis including discharge eGFR and serum urea demonstrated that only serum urea remained a significant predictor of long-term survival; however, eGFR and BUN/creatinine ratio were both independently predictive of survival. Urea was more discriminative than eGFR in predicting long-term survival by area under the receiver operating characteristic curve (0.803 vs. 0.787; p = 0.01). Increasing tertiles of discharge serum urea and BUN/creatinine were independent predictors of HF rehospitalization and combined death and HF rehospitalization. This study suggests that serum urea is a more powerful predictor of survival than eGFR in patients with HF. This may be due to urea's relation to key biological parameters including renal, hemodynamic, and neurohormonal parameters pertaining to the overall clinical status of the patient with chronic HF.
Assuntos
Insuficiência Cardíaca/complicações , Insuficiência Cardíaca/diagnóstico , Insuficiência Renal/etiologia , Ureia/sangue , Idoso , Idoso de 80 Anos ou mais , Biomarcadores/sangue , Feminino , Insuficiência Cardíaca/mortalidade , Hospitalização , Humanos , Testes de Função Renal , Masculino , Pessoa de Meia-Idade , Prognóstico , Estudos Prospectivos , Insuficiência Renal/diagnóstico , Insuficiência Renal/fisiopatologia , Fatores Socioeconômicos , Análise de SobrevidaRESUMO
OBJECTIVES: This study compared cardiovascular safety profiles of 2 local anesthetics (LA): articaine (Ubistesine) versus standard lidocaine solution in cardiovascular patients. STUDY DESIGN: Fifty cardiovascular patients were randomly assigned to dental treatment using 1.8 mL of one of two LA injections: articaine 4% and adrenalin 1:200,000 or lidocaine 2% and adrenalin 1:100,000. A computerized system enabled continuous longitudinal data collection: electrocardiography (ECG), O(2)-saturation, blood pressure (BP), and heart rate (HR). Patients scored pain level at the end of the LA injection (on a 0 to 10 scale). RESULTS: There were no clinical severe adverse effects. One transient local parasthesia occurred (lidocaine group), which lasted 4 weeks. There were no statistically significant differences between the 2 groups in HR, systolic or diastolic-BP, and O(2) saturation. Age, gender, jaw treated, treatment duration, and the pain level did not influence the results of the comparison. In 3 patients asymptomatic ischemic changes were noted on ECG (1 in the lidocaine group and 2 in the articaine group). CONCLUSIONS: LA with articaine 4% with adrenalin 1:200,000 was comparably as safe as LA with standard concentrations of lidocaine and adrenalin in cardiovascular patients. Cardiac ischemic changes on ECG did not appear to be related to the LA.
Assuntos
Anestesia Dentária/métodos , Anestésicos Locais/administração & dosagem , Pressão Sanguínea/efeitos dos fármacos , Assistência Odontológica para Doentes Crônicos , Frequência Cardíaca/efeitos dos fármacos , Isquemia Miocárdica , Vasoconstritores/administração & dosagem , Análise de Variância , Anestesia Local/métodos , Carticaína/administração & dosagem , Método Duplo-Cego , Eletrocardiografia/efeitos dos fármacos , Epinefrina/administração & dosagem , Feminino , Humanos , Lidocaína/administração & dosagem , Masculino , Pessoa de Meia-Idade , Oxigênio/sangue , Estudos ProspectivosRESUMO
BACKGROUND: Patients with heart failure have a poor prognosis. However, it has been presumed that patients with heart failure and preserved left ventricular function (LVF) may have a more benign prognosis. OBJECTIVES: We evaluated the clinical outcome of patients with heart failure and preserved LVF compared with patients with reduced function and the factors affecting prognosis. METHODS: We prospectively evaluated 289 consecutive patients hospitalized with a definite clinical diagnosis of heart failure based on typical symptoms and signs. They were divided into 2 subsets based on echocardiographic LVF. Patients were followed clinically for a period of 1 year. RESULTS: Echocardiography showed that more than one third (36%) of the patients had preserved systolic LVF. These patients were more likely to be older and female and have less ischemic heart disease. The survival at 1 year in this group was poor and not significantly different from patients with reduced LVF (75% vs 71%, respectively). The adjusted survival by Cox regression analysis was not significantly different (P=.25). However, patients with preserved LVF had fewer rehospitalizations for heart failure (25% vs 35%, P<.05). Predictors of mortality in the whole group by multivariate analysis were age, diabetes, chronic renal failure, atrial fibrillation, residence in a nursing home, and serum sodium < or = 135 mEq/L. CONCLUSION: The prognosis of patients with clinical heart failure with or without preserved LVF is poor. Better treatment modalities are needed in both subsets.
Assuntos
Insuficiência Cardíaca/mortalidade , Função Ventricular Esquerda , Idoso , Idoso de 80 Anos ou mais , Feminino , Insuficiência Cardíaca/diagnóstico , Insuficiência Cardíaca/fisiopatologia , Humanos , Israel/epidemiologia , Masculino , Pessoa de Meia-Idade , PrognósticoRESUMO
We describe a case of primary cardiac lymphoma diagnosed by transvenous biopsy under fluoroscopic and transthoracic echocardiographic guidance. A 38-year-old man was admitted because of exertional dyspnea. ECG revealed complete atrioventricular block. Transthoracic echocardiography revealed a large mass attached to the interventricular septum and protruding into the right atrium. The patient underwent a right heart catheterization and a biopsy was taken from the mass using fluoroscopic and transthoracic echocardiographic guidance. Diagnosis of malignant lymphoma was established by the biopsy specimen. The use of transthoracic echo in conjunction with fluoroscopy may be useful for the diagnosis of intracardiac mass transvenously.
Assuntos
Neoplasias Cardíacas/diagnóstico , Linfoma de Células B/diagnóstico , Adulto , Cateterismo Cardíaco/métodos , Ecocardiografia/métodos , Fluoroscopia/métodos , Neoplasias Cardíacas/terapia , Humanos , Linfoma de Células B/terapia , Masculino , Resultado do TratamentoRESUMO
Medication-resistant major depression was diagnosed in a 67-year-old man 1 1/2 years after heart transplantation. Electroconvulsive therapy was administered, resulting in remarkable improvement in depressive symptoms without complications related to the cardiac condition.