Tag: cardiac resynchronization therapy

The success of cardiac resynchronization therapy (CRT) depends on a high percentage ofventricular pacing. We present the electrocardiography and electrograms of a patient whounderwent an implantable cardioverter-defibrillator (ICD) with CRT implantation showinga low percentage of ventricular pacing as a result of T wave oversensing of paced QRS. Thepatient showed no clinical improvement...

Cardiac resynchronization therapy (CRT) is an acknowledged treatment for advanced heart failure in acquired dilated cardiomyopathy, resistant to pharmacotherapy. Although there are no therapeutic standards regarding heart failure originating from congenital heart defects with systemic right ventricle, a number of CRT implantations by transvenous approach in congenitally corrected transposition of the great arteries (CCTGA) have been reported since 2001, even though none of them expressly referred to a case concomitant with dextrocardia and situs inversus anomaly...

Recently, three large randomized clinical trials: REVERSE, MADIT-CRT, and RAFT were completed aiming to determine the effects of cardiac resynchronization therapy (CRT) or CRT with defibrillator (CRT-D) in less advanced, predominantly NYHA class II heart failure (HF) patients. The REVERSE trial, significantly smaller than the other two trials, could be considered as a phase II study indicating that mild-to-moderate HF patients show symptomatic and hemodynamic improvement in response to CRT...

Cardiac magnetic resonance imaging (CMR) has become an indispensible imaging technique for the diagnosis and treatment of patients with cardiovascular diseases. Technical advances in the past have rendered CMR unique in the evaluation of cardiovascular anatomy, physiology, and pathophysiology due to its unique ability to produce high resolution tomographic images of the human heart and vessels in any arbitrary orientation, with soft tissue contrast that is superior to competing imaging modalities without the use of ionizing radiation...

Cardiac resynchronization therapy (CRT) is an acknowledged treatment for advanced heart failure in acquired dilated cardiomyopathy, resistant to pharmacotherapy. Although there are no therapeutic standards regarding heart failure originating from congenital heart defects with systemic right ventricle, a number of CRT implantations by transvenous approach in congenitally corrected transposition of the great arteries (CCTGA) have been reported since 2001, even though none of them expressly referred to a case concomitant with dextrocardia and situs inversus anomaly....

Heart failure continues to be a major public health problem with high morbidity and mortality rates, despite the advances in medical treatment. Advanced heart failure patients have severe persistent symptoms and a poor quality of life. Cardiac resynchronization therapy (CRT), an invasive therapy which involves synchronized pacing of both right and left ventricles, improves ventricular conduction delay and left ventricular performance...

Cardiac resynchronization therapy (CRT) is an important advance for the treatment of end-stage heart failure (HF). About 15–50% of HF is complicated by atrial fibrillation (AF), associated with worsened outcomes. The presence of AF may interfere with optimal delivery of CRT due to competition with biventricular (BiV) capture by conducted beats...

To systematically review the benefits of cardiac resynchronization therapy (CRT) in heart failure patients with narrow QRS (< 120 ms) who have baseline mechanical asynchrony...

Cardiac resynchronization therapy (CRT) has been accepted as an established therapy for advanced systolic heart failure. Electrical and mechanical dyssynchrony are usually evaluated to increase the percentage of CRT responders. We postulated that QRS notch can increase mechanical LV dyssynchrony independently of other known predictors such as left ventricular ejection fraction and QRS duration..

Cardiac resynchronization therapy (CRT) has been shown to reduce heart failure-related morbidity and mortality. However, approximately one in three patients do not respond to CRT. The aim of the current study was to determine the parameter(s) which predict reverse remodeling and clinical improvement after CRT...