8 research outputs found
Design of the evolution of management strategies of heart failure patients with implantable defibrillators (EVOLVO) study to assess the ability of remote monitoring to treat and triage patients more effectively
CATHETER ABLATION VERSUS ANTIARRHYTHMIC DRUG THERAPY IN PAROXYSMAL AF: A COST/EFFECTIVENESS ANALYSIS
Mortality, morbidity, and quality of life after circumferential pulmonary vein ablation for atrial fibrillation
Risk of Malignant Arrhythmias in Initially Symptomatic Patients With Wolff-Parkinson-White Syndrome
Multisite Left Ventricular Pacing in a Single Coronary Sinus Branch Improves 3-Month Echocardiographic and Clinical Response to Cardiac Resynchronization Therapy
Echo/Doppler-derived time intervals are able to predict left ventricular reverse remodeling after cardiac resynchronization therapy
Aim We evaluated the predictive value of echo/Doppler derived indices, which reflect the duration of the isovolumic phases of the cardiac cycle, in identifying cardiac resynchronization therapy (CRT) responders. Methods and results In 105 patients before and 6 months after CRT the following echo/Doppler parameters were evaluated: myocardial performance index (MPI) as the sum of isovolumic contraction time (IVCT) and isovolumic relaxation time (IVRT) divided by ejection time; total isovolumic time (t-IVT) as the sum of IVCT and IVRT divided by the RR interval; and standard deviation of the time to systolic peak velocity (Ts-SD) as asynchrony index. After 6 months, patients were defined responders according to 15% left ventricle (LV) end-systolic volume reduction or more. At baseline, responders (53.3%) had higher t-IVT and MPI than nonresponders (0.30 +/- 0.06 versus 0.22 +/- 0.05,