Assessment of the post-implant final left ventricular lead position: a comparative study between radiographic and angiographic modalities.

Purpose: Post-implant lateral and postero-anterior chest X-rays (CXR) are often utilized to determine the final LV lead tip position after cardiac resynchronization therapy (CRT). This study sought to compare post-implant standard CXRs with intra-procedural rotational coronary venous angiography (RCVA) to localize the final LV lead position.

Methods: Sixty-four patients undergoing CRT (69.

Interlead distance and left ventricular lead electrical delay predict reverse remodeling during cardiac resynchronization therapy.

Background: Both anatomic interlead separation and left ventricle lead electrical delay (LVLED) have been associated with outcomes following cardiac resynchronization therapy (CRT). However, the relationship between interlead distance and electrical delay in predicting CRT outcomes has not been defined.

Methods: We studied 61 consecutive patients undergoing CRT for standard clinical indications.

Usefulness of cardiac resynchronization therapy in the management of Doxorubicin-induced cardiomyopathy.

Doxorubicin is a widely used antineoplastic agent that may cause irreversible dilated cardiomyopathy. Doxorubicin-induced cardiomyopathy (DIC) can occur several years after exposure and carries a poor prognosis. Although cardiac resynchronization therapy (CRT) is a useful intervention in end-stage heart failure unresponsive to optimal medical therapies, its efficacy in DIC remains unknown.

Usefulness of high-speed rotational coronary venous angiography during cardiac resynchronization therapy.

Standard coronary venous angiography (SCVA) provides a static, fixed projection of the coronary venous (CV) tree. High-speed rotational coronary venous angiography (RCVA) is a novel method of mapping CV anatomy using dynamic, multiangle visualization. The purpose of this study was to assess the value of RCVA during cardiac resynchronization therapy.

The impact of age and gender on cardiac resynchronization therapy outcome.

Background: Cardiac resynchronization therapy (CRT) outcome varies significantly among patients. We aimed to determine the impact of age, gender, and heart failure etiology on the long-term outcome of patients receiving CRT.

Methods: A total of 117 patients with drug-refractory heart failure, New York Heart Association (NYHA) Class III or IV, and a wide QRS complex, who received CRT, were followed for one year.

Variability of coronary venous anatomy in patients undergoing cardiac resynchronization therapy: a high-speed rotational venography study.

Background: Imaging the coronary venous (CV) tree to delineate the coronary sinus and its tributaries can facilitate electrophysiological procedures, such as cardiac resynchronization therapy (CRT) and catheter ablation. Venography also allows visualization of the left atrial (LA) veins, which may be a potential conduit for ablative or pacing strategies given their proximity to foci that can trigger atrial fibrillation.

Objective: The aim of this study was to provide a detailed description of CV anatomy using rotational venography in patients undergoing CRT.

Integrating functional and anatomical information to facilitate cardiac resynchronization therapy.

Multiple imaging modalities are required in patients receiving cardiac resynchronization therapy. We have developed a strategy to integrate echocardiographic and angiographic information to facilitate left ventricle (LV) lead position. Full three-dimensional LV-volumes (3DLVV) and dyssynchrony maps were acquired before and after resynchronization.