AI Article Synopsis
- The study evaluated a new noninvasive system called NEEES for mapping ventricular arrhythmias in patients with various types of cardiomyopathy.
- Eight patients (average age 50) underwent mapping, with some having ischemic heart conditions and others nonischemic, using body-surface ECGs and CT scans.
- Results showed that the NEEES effectively identified macro-reentrant circuits in patients with heart scar, while those without scar exhibited different arrhythmia patterns involving rotor activity and wavelets.
Article Abstract
Introduction: The aim of this study was to assess the use of a novel noninvasive epicardial and endocardial electrophysiology system (NEEES) for mapping of ventricular arrhythmias.
Methods: Eight patients (2 females, mean age 50±17 years) with ischemic (n=3) and nonischemic (n=5) cardiomyopathy and inducible ventricular arrhythmias during electrophysiology study were enrolled. Noninvasive mapping of ventricular arrhythmias was performed using the NEEES based on body-surface electrocardiograms and computed tomography imaging data. Arrhythmia patterns were analyzed using noninvasive phase mapping.
Results: Macro-reentrant VT circuits were observed in 3 ischemic and 1 nonischemic cardiomyopathy patient, respectively. In the remaining 4 patients, phase mapping revealed relatively stable rotor activity and multiple wavelets.
Conclusions: Noninvasive cardiac mapping was able to visualize the macro-reentrant circuits in patients with scar-related VT. In patients without myocardial scar only polymorphic VT or VF was inducible, and rotor activity and multiple wavelets were observed.
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| http://dx.doi.org/10.1016/j.jelectrocard.2017.07.018 | DOI Listing |
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