Monophasic action potential amplitude for substrate mapping
نویسندگان
چکیده
منابع مشابه
High resolution MSI-guided multiple monophasic action potential mapping with a single amagnetic catheter
During recent years, catheter ablation has become a method of choice in definitive treatment of cardiac arrhythmias. Prerequisite for successful ablation is the precise localization of the arrhythmogenic substrate underlying the clinical arrhythmia. This is usually done during invasive electrophysiological study (EPS) with multichannel endocardial mapping under fluoroscopic imaging [1,2]. More ...
متن کاملDetermination of human ventricular repolarization by noncontact mapping: validation with monophasic action potential recordings.
BACKGROUND Noncontact mapping (NCM) has not been validated as a clinical technique to measure ventricular repolarization. We used NCM to determine repolarization characteristics by analysis of reconstructed unipolar electrograms (UEs) at the same sites as monophasic action potential (MAP) recordings in the human ventricle. METHODS AND RESULTS MAPs were recorded from a total of 355 beats at 46...
متن کاملMonophasic action potential duration during programmed electrical stimulation.
UNLABELLED To examine changes in monophasic action potential duration (APD) with a pacing protocol similar to that used during electrophysiological testing, action potentials were recorded in vivo from the left ventricular apical endocardium of 12 normal mongrel dogs. The atrioventricular node was ablated and the dogs paced from the anterior right ventricle at a baseline cycle length of 1000 ms...
متن کاملMonophasic Action Potential Morphology in the Human Heart
Background. Recent studies examining mechanisms of defibrillation have focused on prolongation of graded cellular response duration during refractory period stimulation. This mechanism assumes that defibrillation shocks interact with ventricular cells during the process of repolarization. Methods and Results. To test this assumption, we examined monophasic action potentials (MAPs) from 171 epis...
متن کاملNew insights into application of cardiac monophasic action potential.
Monophasic action potential (MAP) recording plays an important role in a more direct view of human myocardial electrophysiology under both physiological and pathological conditions. The procedure of MAP measuring can be simply performed using the Seldinger technique, when MAP catheter is inserted through femoral vein into the right ventricle or through femoral artery to the left ventricle. The ...
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ژورنال
عنوان ژورنال: American Journal of Physiology-Heart and Circulatory Physiology
سال: 2019
ISSN: 0363-6135,1522-1539
DOI: 10.1152/ajpheart.00225.2019