Fragmented QRS: What Is The Meaning?

Fragmented QRS: What Is The Meaning?

Fragmented QRS (fQRS) is a convenient marker of myocardial scar evaluated by 12-lead electrocardiogram (ECG) recording. fQRS is defined as additional spikes within the QRS complex. In patients with CAD, fQRS was associated with myocardial scar detected by single photon emission tomography and was a predictor of cardiac events. fQRS was also a predictor of mortality and arrhythmic events in pati...

Fragmented QRS and Chagas' disease

Unfortunately, the authors have missed our 2 publications on this topic which have been tested in a larger population of CD patients with an implantable cardioverter-defibrillator (ICD) (FECHA study) [2,3]. We included 98 patients from 14 centers in Latin America, all of them with CD cardiomyopathy and an implantable cardioverter-defibrillator (ICD). The mean follow-up was 33±20 months. Mean LV...

Changing QRS Morphology: What is the mechanism?

ECG in sinus rhythm with ventricular preexcitation and changing QRS morphology was seen that was initially interpreted as the multiple accessory pathway from elsewhere. (Figure 1A). The following mechanisms are potentially involved in the electrogenesis of changing QRS morphology in WPW syndrome: 1) multiple accessory pathways1; 2) simultaneous occurrence of aberrant atrioventricular conduction...

Wide QRS tachycardia. What is the mechanism?

A 70-year-old gentleman was referred for radiofrequency catheter ablation of wide QRS tachycardia that was not terminated with intravenous adenosine. Twelve-lead ECG was normal during sinus rhythm and transthoracic echocardiography demonstrated no evidence of structural heart disease. The electrophysiological study showed a normal AH interval of 104 m and HV interval of 45 m during sinus rhythm...

Fragmented QRS Electrocardiogram - The Hidden Talisman?