Carel Jan Willem Borleffs

Learn More
AIMS Recently, strain and strain rate have been introduced as novel parameters reflecting left ventricular (LV) function. The purpose of the current study was to assess the prognostic importance of strain and strain rate after acute myocardial infarction (AMI). METHODS AND RESULTS A total of 659 patients after AMI were evaluated. Baseline echocardiography(More)
AIMS To assess survival and to construct a baseline mortality risk score in primary prevention implantable cardioverter defibrillator (ICD) patients with non-ischaemic or ischaemic heart disease. METHODS AND RESULTS Since 1996, data of all consecutive patients who received an ICD system in the Leiden University Medical Center were collected and assessed(More)
BACKGROUND Cardiac resynchronization therapy for heart failure with left bundle branch block reduces left ventricular (LV) conduction delay, contraction asynchrony, and LV end-systolic volume ("reverse remodeling"). Up to one third of patients do not improve, and the electric requirements for reverse remodeling are unclear. We hypothesized that reverse(More)
BACKGROUND Over the last decades, a gradual decrease in ventricular fibrillation (VF) as initial recorded rhythm during resuscitation for out-of-hospital cardiac arrest (OHCA) has been noted. We sought to establish the contribution of implantable cardioverter-defibrillator (ICD) therapy to this decline. METHODS AND RESULTS Using a prospective database of(More)
PURPOSE The aim of the current study was to evaluate the relationship between the site of latest mechanical activation as assessed with gated myocardial perfusion SPECT (GMPS), left ventricular (LV) lead position and response to cardiac resynchronization therapy (CRT). METHODS The patient population consisted of consecutive patients with advanced heart(More)
BACKGROUND Functional mitral regurgitation (MR) is a common finding in heart failure patients with dilated cardiomyopathy and has important prognostic implications. However, the increased operative risk of these patients may result in low referral or high denial rate for mitral valve surgery. Cardiac resynchronization therapy (CRT) has been shown to have a(More)
BACKGROUND Despite the positive effect on mortality in selected patients, implantable cardioverter-defibrillator therapy is also associated with potential malfunction of the implanted system. The present study provides the long-term lead failure rate in a large single-center cohort. METHODS AND RESULTS Since 1992, a total of 2068 implantable(More)
AIMS current criteria for cardiac resynchronization therapy (CRT) are restricted to patients with a wide QRS complex (>120 ms). Overall, only 30% of heart failure patients demonstrate a wide QRS complex, leaving the majority of heart failure patients without this treatment option. However, patients with a narrow QRS complex exhibit left ventricular (LV)(More)
BACKGROUND This study aimed to evaluate the impact of early reperfusion during acute myocardial infarction (MI) on ventricular tachycardia (Vt) inducibility, inducible Vt cycle length (CL), and occurrence of spontaneous Vt late after MI. METHODS AND RESULTS Five hundred six patients (440 men; age, 63±11 years) with prior MI who underwent electrophysiology(More)
AIMS Little evidence is available regarding restrictions from driving following implantable cardioverter defibrillator (ICD) implantation or following first appropriate or inappropriate shock. The purpose of the current analysis was to provide evidence for driving restrictions based on real-world incidences of shocks (appropriate and inappropriate). (More)