Imaging cardiac activation sequence during ventricular tachycardia in a canine model of nonischemic heart failure
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چکیده
منابع مشابه
Imaging cardiac activation sequence during ventricular tachycardia in a canine model of nonischemic heart failure.
Noninvasive cardiac activation imaging of ventricular tachycardia (VT) is important in the clinical diagnosis and treatment of arrhythmias in heart failure (HF) patients. This study investigated the ability of the three-dimensional cardiac electrical imaging (3DCEI) technique for characterizing the activation patterns of spontaneously occurring and norepinephrine (NE)-induced VTs in a newly dev...
متن کاملNoninvasive reconstruction of the three-dimensional ventricular activation sequence during pacing and ventricular tachycardia in the canine heart
Han C, Pogwizd SM, Killingsworth CR, He B. Noninvasive reconstruction of the three-dimensional ventricular activation sequence during pacing and ventricular tachycardia in the canine heart. Am J Physiol Heart Circ Physiol 302: H244–H252, 2012. First published October 7, 2011; doi:10.1152/ajpheart.00618.2011.—Single-beat imaging of myocardial activation promises to aid in both cardiovascular res...
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BACKGROUND Catheter ablation of ventricular tachycardia (VT) in nonischemic heart diseases can be challenging, and outcomes across different diseases are incompletely defined. The aim of this study was to describe the outcomes after catheter ablation for nonischemic VT in a large cohort and to compare the electrophysiological findings and outcomes according to the type of underlying disease. ...
متن کاملEpicardial mapping of sustained ventricular tachycardia in nonischemic heart disease.
BACKGROUND The complexity of reentrant circuits related to ventricular tachycardias decreases the success rate of radiofrequency ablation procedures. OBJECTIVE To evaluate whether the epicardial mapping with multiple electrodes carried out simultaneously with the endocardial mapping helps in ablation procedures of sustained ventricular tachycardia (VT) in patients with nonischemic heart disea...
متن کاملImprovement of defibrillation efficacy and quantification of activation patterns during ventricular fibrillation in a canine heart failure model.
BACKGROUND Little is known about the effects of heart failure (HF) on the defibrillation threshold (DFT) and the characteristics of activation during ventricular fibrillation (VF). METHODS AND RESULTS HF was induced by rapid right ventricular (RV) pacing for at least 3 weeks in 6 dogs. Another 6 dogs served as controls. Catheter defibrillation electrodes were placed in the RV apex, the superi...
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ژورنال
عنوان ژورنال: American Journal of Physiology-Heart and Circulatory Physiology
سال: 2015
ISSN: 0363-6135,1522-1539
DOI: 10.1152/ajpheart.00196.2014