ECG clues for diagnosing ventricular tachycardia mechanism.

  Background & Objective : Heart failure is a clinical syndrome and increases in rate by aging. Because changes in ECG and electrolytes are variable, specific and sometimes independent to the disease with different methods to be diagnosed, in this study we tried to find a way to diagnose them.   Materials & Methods: This is a retrospective descriptive-analytic study. Data was collected from dec...

Perivalvular fibrosis and monomorphic ventricular tachycardia: toward a unifying hypothesis in nonischemic cardiomyopathy.

The basis for arrhythmogenesis in patients with nonischemic cardiomyopathy and ventricular tachycardia (VT) needs further elucidation. Cardiac arrest and/or nonsustained VT are common arrhythmia presentations in the setting of nonischemic cardiomyopathy, with sustained monomorphic VT being relatively uncommon.1,2 Importantly, bundlebranch reentrant VT is identified as the VT mechanism in a sign...

Diagnosing the mechanism of supraventricular tachycardia: restoring the luster of a fading art.

n an era focused on voluminous data entry and efficient, definitive” diagnostic tests, establishing a correct arrhythia diagnosis on the basis of the fundamentals of the octor-patient relationship, a good history, and physical xamination has frequently become relegated to an afterhought of historical significance. The battle cry of “Let’s take he patient to the EP lab and figure it (the mechani...

A new approach to detect Life threatening cardiac arrhythmias using Sequential spectrum of Electrocardiogram signals

This study evaluates the discriminative power of sequential spectrum analysis of the short-term electrocardiogram (ECG) time series in separating normal and subjects with life threatening arrhythmias like, ventricular tachycardia/fibrillation (VT/VF). The raw ECG time series is transformed into a series of binary symbols and the binary occupancy or relative distribution of mono-sequences (i.e. ...

One symptom, two arrhythmias: the rare and the even rarer

BACKGROUND Wolff-Parkinson-White (WPW) syndrome and idiopathic left ventricular tachycardia (ILVT) are rare and up to now the coexistence of both entities has rarely been reported. In patients with ventricular preexcitation the underlying mechanism of paroxysmal tachycardia most likely is atrioventricular reentrant tachycardia (AVRT). However, without ECG documentation of the tachycardia diagno...