Introduction: Heart failure is a major cause of death and disability and poses a significant public health concern. Approximately half of the patients admitted with heart failure, have preserved left ventricular ejection fraction. The association between systolic blood pressure (SBP) and long-term outcome in this group has not been well established.
View Article and Find Full Text PDFPrevious studies suggested that statin therapy reduces the risk of occurrence and recurrence of atrial fibrillation mainly in patients with coronary artery disease. Data regarding the effect of statins on the risk for the entire range of supraventricular arrhythmias (SVA) in mild heart failure (HF) with different disease causes are lacking. Multivariate Cox proportional hazards regression models were used to assess the effect of statin therapy, evaluated as a time-dependent covariate, on the risk of SVA and recurrent SVA (defined as atrial fibrillation, atrial flutter, atrial tachycardia, and supraventricular tachycardia) that were inappropriately treated with implantable cardioverter-defibrillator device in 1,790 patients enrolled in the Multicenter Automatic Defibrillator Implantation With Cardiac Resynchronization Therapy trial.
View Article and Find Full Text PDFBackground: Cardiac resynchronization with defibrillators (CRT-D) reduces heart failure and mortality compared with defibrillators alone. Whether this applies to all ages is unclear.
Methods And Results: We assessed the association of age on heart failure and death as a post hoc analysis of the MADIT-CRT follow-up study, in which 1,281 patients with class I/II heart failure (HF) were randomized to CRT-D or implantable cardioverter-defibrillators alone.
Background: Diabetes mellitus (DM) and aortic stenosis (AS) are frequent findings in the elderly population. Data regarding the influence of DM on the outcomes of patients undergoing transcatheter aortic valve replacement (TAVR) due to AS are limited. The aim of this study was to examine the impact of DM on TAVR outcomes.
View Article and Find Full Text PDFBackground: Left ventricular (LV) diastolic dysfunction (LVDD) is a well-established and early echocardiographic characteristic of diabetic cardiomyopathy. However, there are limited data on the association between impaired fasting glucose (IFG) and LVDD.
Objective: To determine whether IFG is associated with LVDD among middle age adults.
Background: Unrecognized renal insufficiency, defined as estimated glomerular filtration rate <60 mL/min/1.73 m(2) in the presence of normal serum creatinine, is common among patients with acute coronary syndrome. We aimed to determine the prevalence and clinical significance of unrecognized renal insufficiency in a large unselected population of patients with acute coronary syndrome.
View Article and Find Full Text PDFBackground: Prospective data on the safety and efficacy of the wearable cardioverter defibrillator (WCD) in a real-world setting are lacking. The Prospective Registry of Patients Using the Wearable Defibrillator (WEARIT-II) Registry was designed to provide real-world data on the WCD as a strategy during a period of risk stratification.
Methods And Results: The WEARIT-II Registry enrolled 2000 patients with ischemic (n=805, 40%), or nonischemic cardiomyopathy (n=927, 46%), or congenital/inherited heart disease (n=268) prescribed WCD between August 2011 and February 2014.
Objectives: This study sought to examine whether imaging of the atrioventricular (AV) membranous septum (MS) by computed tomography (CT) can be used to identify patient-specific anatomic risk of high-degree AV block and permanent pacemaker (PPM) implantation before transcatheter aortic valve implantation (TAVI) with self-expandable valves.
Background: MS length represents an anatomic surrogate of the distance between the aortic annulus and the bundle of His and may therefore be inversely related to the risk of conduction system abnormalities after TAVI.
Methods: Seventy-three consecutive patients with severe aortic stenosis underwent contrast-enhanced CT before TAVI.
Objectives: The implementation of an early invasive approach and the increased use of potent anti-thrombotic drugs have resulted in higher rates of major bleeding events (MBE) in patients with acute coronary syndrome (ACS). There are limited data on the temporal trends for the rates of MBE over the last decade and associated outcomes.
Methods: Rates, characteristics, risk factors and clinical outcomes associated with MBE were assessed among 11,538 patients enrolled in the biennial Acute Coronary Syndrome Israeli Surveys (ACSIS) 2000-2010.
Background: Implantable cardioverter-defibrillators (ICDs) have become the mainstay of preventive measures for sudden cardiac death (SCD). However, there are limited data on rates of appropriate life-saving ICD shock therapies in contemporary real-life settings.
Objective: The purpose of the study was to evaluate the rate of appropriate life-saving ICD shock therapies in a contemporary registry.
Background: Acute kidney injury (AKI) was demonstrated to adversely affect outcome in patients undergoing transcatheter aortic valve implantation (TAVI). We compared predictors for AKI and associated outcomes according to various definitions among patients undergoing TAVI in a tertiary medical center.
Methods: Two-hundred and seventeen TAVI patients were evaluated for the occurrence of AKI according to Kidney Disease Improving Global Outcomes (KDIGO)/Valve Academic Research Consortium (VARC-2) and Risk Injury Failure Loss End-Stage (RIFLE) definitions.
Background: Low alanine aminotransferase (ALT) blood levels are known to be associated with frailty and increased risk of long-term mortality in certain populations. However, the contribution of this marker to long-term outcome has not been assessed in patients with chronic coronary heart disease.
Objective: The aim of the current study was to assess the association between low ALT values and long-term, 22.
Background: While earlier studies indicated that cholesterol levels decrease significantly after an acute myocardial infarction (MI), a more recent study refuted this observation.
Objectives: To assess changes in plasma lipid levels after onset of acute MI, and determine important predictors of lipid dynamics.
Methods: We prospectively measured lipid levels of patients who presented with an acute MI.
Unlabelled: Early intervention with cardiac resynchronization therapy with defibrillator (CRT-D) in mild heart failure (HF) patients with a left bundle branch block (LBBB) ECG pattern was associated with a significant reduction in mortality in the long-term MADIT-CRT trial. Whether patients in MADIT-CRT enrolled from centers in the USA and in Europe have different long-term clinical response to CRT-D remains unknown. We compared the baseline clinical characteristics and clinical and echocardiographic long-term clinical response to CRT-D between MADIT-CRT patients with LBBB who were enrolled in USA (n = 871) and European centers (n = 392).
View Article and Find Full Text PDFCirc Heart Fail
September 2015
Background: Previous studies have shown that low blood pressure is associated with increased mortality and heart failure (HF) in patients with left ventricular dysfunction. Cardiac resynchronization therapy (CRT) was shown to increase systolic blood pressure (SBP). Therefore, we hypothesized that treatment with CRT would provide incremental benefit in patients with lower SBP values.
View Article and Find Full Text PDFAims: We hypothesized that the relationship between LVEF and the risk of life-threatening ventricular tachyarrhythmias (VTAs) may modify the effect of a CRT device with a defibrillator (CRT-D) on VTA risk.
Methods And Results: The risk of fast (≥200 b.p.
Background: Anemia in patients with acute coronary syndromes (ACS) is strongly related to the increased risk of bleeding and mortality. Whether benefit of early invasive strategy exceeds the risk of bleeding in these patients is unknown.
Aim: To assess impact of early coronary angiography on outcomes of patients with ACS and baseline anemia.
Background: Previous studies have shown conflicting results regarding the benefit of cardiac resynchronization therapy (CRT) by sex and QRS duration.
Methods And Results: In the Multicenter Automatic Defibrillator Implantation Trial With Cardiac Resynchronization Therapy (MADIT-CRT), we evaluated long-term clinical outcome of heart failure (HF) or death, death, and HF alone by sex and QRS duration (dichotomized at 150 ms) in left bundle-branch block patients with CRT with defibrillator backup (CRT-D) versus implantable cardioverter-defibrillator (ICD) only. There were 394 women (31%) and 887 men with left bundle-branch block.
Background: Obesity and overweight are strongly associated with cardiovascular morbidity and mortality. However, there are limited data on the association between excess weight and the risk of ectopic ventricular activity.
Design And Methods: We investigated the association between body mass index (BMI) and the risk for ectopic ventricular activity (defined as multiple ventricular premature beats (≥3), ventricular bigeminy, nonsustained ventricular tachycardia or sustained ventricular tachycardia) during exercise stress testing among 22,516 apparently healthy men and women who attended periodic health screening examinations between the years 2000 and 2014.
Cardiac resynchronization therapy (CRT) has evolved as a Class I treatment indication with Level of Evidence A, in patients with mild heart failure, depressed left ventricular ejection fraction, and wide QRS. In this review article, we will discuss the major findings of sub-studies published from the Multicenter Automatic Defibrillator Implantation Trial-Cardiac Resynchronization Therapy (MADIT-CRT).
View Article and Find Full Text PDFBackground: We aimed to determine the impact of renal function on long-term outcomes with cardiac resynchronization therapy with defibrillator among patients with mild heart failure (HF).
Methods And Results: We stratified 1820 Multicenter Automatic Defibrillator Implantation Trial-Cardiac Resynchronization Therapy patients by QRS morphology into those with and without left bundle-branch block. Subgroups within each QRS morphology category were created based on glomerular filtration rate (GFR): GFR <60 and ≥60 mL/min per 1.
Background: We aimed to evaluate whether reduced cardiovascular fitness has a direct or indirect effect for the development of cardiovascular disease.
Methods: We investigated 15,595 men and women who were annually screened in a tertiary medical center. All subjects were free of ischemic heart disease and had completed maximal exercise stress test according to the Bruce protocol at their first visit.
Objective: To compare the short-term and long-term outcomes of patients hospitalized with a primary diagnosis of acute heart failure (AHF) versus AHF associated with an alternative principal diagnosis.
Methods: The Israel nationwide Heart Failure (HF) survey examined prospectively 4102 consecutive HF patients admitted to all 25 public hospitals in the country. This study focused on 2302 patients hospitalized with a diagnosis of AHF.
Aims: The aim of this study is to determine the most accurate renal function formula that predicts short- and long-term mortality in a wide spectrum of acute coronary syndrome (ACS) patients.
Methods And Results: We analyzed 8,726 consecutive patients (46.3% ST-elevation myocardial infarction [STEMI] and 53.
Background: Heart rate variability (HRV) analysis has been shown to be a predictor of sudden cardiac death and all-cause mortality in patients with cardiac disease.
Objectives: To examine whether newer HRV analysis algorithms, as used by the HeartTrends device, are superior to exercise stress testing (EST) for the detection of myocardial ischemia in patients without known coronary artery disease (CAD).
Methods: We present pilot data of the first 100 subjects enrolled in a clinical trial designed to evaluate the yield of short-term (1 hour) HRV testing for the detection of myocardial ischemia.