Mapping of Complex Atrial Tachycardia Circuits by 3-Dimensional Body Surface Mapping
نویسندگان
چکیده
منابع مشابه
Diagnostic Methods Body Surface Mapping
Body surface potential maps were recorded from 140 chest leads in 25 patients affected by the idiopathic long QT syndrome (LQTS) and in 25 healthy control subjects matched for age and sex. Potential time integrals of the QRST and ST-T intervals were calculated at each lead point and displayed as isointegral (ISOI) maps. The main abnormalities noted on the QRST and ST-T ISOI maps were one area o...
متن کاملDiagnostic Methods - Body Surface Mapping
Low-level activity at the end of the QRS complex was analyzed from 63 thoracic leads in 15 normal subjects and in 21 patients with ventricular tachycardia (VT). The latter had old myocardial infarction and no conduction disturbances and had not been receiving antiarrhythmic drugs. In both normal subjects and patients with VT, isopotential maps of the time-averaged and filtered (25 Hz highpass) ...
متن کاملNoninvasive localization of maximal frequency sites of atrial fibrillation by body surface potential mapping.
BACKGROUND Ablation of high-frequency sources in patients with atrial fibrillation (AF) is an effective therapy to restore sinus rhythm. However, this strategy may be ineffective in patients without a significant dominant frequency (DF) gradient. The aim of this study was to investigate whether sites with high-frequency activity in human AF can be identified noninvasively, which should help int...
متن کاملCharacterization of focal atrial tachycardia using high-density mapping.
OBJECTIVES The goal of this study was to characterize the origin of focal atrial tachycardias (AT). BACKGROUND Focal ATs originate from a small area and spread centrifugally; however, activation at the AT origin has not been characterized. METHODS Twenty patients with AT having failed prior ablation or occurring after atrial fibrillation ablation were studied. After excluding macro-re-entry...
متن کاملElectroanatomic mapping of atrial tachycardia—Manual vs automated annotation☆
Introduction The availability of novel mapping systems and software in combination with or without dedicated multipolar diagnostic catheters allows for automatic high-density 3-dimensional electroanatomic mapping that enables detailed insight into atrial tachycardia mechanisms. For the accuracy of the activation map, the consistency of electrogram annotation is crucial. Depending on the system ...
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ژورنال
عنوان ژورنال: Journal of the American College of Cardiology
سال: 2013
ISSN: 0735-1097
DOI: 10.1016/j.jacc.2013.04.069