Is monomorphic tachycardia indeed monomorphic?
The dependence of some ECG characteristics on the excitation threshold was studied by mathematical modeling of cardiac arrhythmia in a 2D homogeneous excitable medium. It is shown that monomorphic tachycardias can arise both at elevated and at lowered excitability but the ECG characteristics in these cases are different.
Key wordsreentrant ventricular arrhythmia excitable medium spiral wave ECG variability mathematical modeling normalized variability analysis
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