Origins location of the outflow tract ventricular arrhythmias exhibiting qrS pattern or QS pattern with a notch on the descending limb in lead V1

BMC Cardiovascular Disorders
Cong LinJia-Feng Lin

Abstract

Ventricular outflow tract(VOT) ventricular arrhythmias(VAs) presenting qrS pattern or QS pattern with a notch on the descending limb in lead V1 were consistently thought of arising from the commissure between left and right coronary cusp (L-RCC) by previous studies. However, we found they could originate from other anatomic structures in VOT. This study aimed to investigate the exact origin of this kind VAs. Forty-nine patients of VOT premature ventricular contrations/ventricular tachycardia(PVCs/VT) with lead V1 presenting qrS pattern or QS pattern with a notch on the descending limb undergoing successful radiofrequency catheter ablation(RFCA) in our center were analyzed. 12-lead electrocardiogram(ECG) of these PVCs/VT were summarized. Among these PVCs/VT, 37 cases exhibited qrS morphology in lead V1, 12 cases presented QS pattern with a notch on the descending limb in the same lead. Based on the successful ablation sites, these PVCs/VT were divided into 2 groups: (1)Right ventricular outflow tract(RVOT) group (26 cases), and (2) Left ventricular outflow tract (LVOT) group(23 cases, 4 cases originating from the left coronary cusp(LCC), 2 from the right coronary cusp(RCC), 16 from the L-RCC, 1 from the area inferior to LCC(ILCC...Continue Reading

References

Nov 1, 1992·Annals of Internal Medicine·K Wang, M Hodges
Jan 26, 2010·Heart Rhythm : the Official Journal of the Heart Rhythm Society·Rupa BalaFrancis E Marchlinski
Dec 7, 2010·Heart Rhythm : the Official Journal of the Heart Rhythm Society·Hugo Van HerendaelFrancis E Marchlinski
May 5, 2012·Journal of Electrocardiology·Scott R CeresnakJohn D Fisher

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Citations

Feb 11, 2020·Pacing and Clinical Electrophysiology : PACE·Bradley C ClarkJeffrey P Moak
May 21, 2020·Journal of Interventional Cardiac Electrophysiology : an International Journal of Arrhythmias and Pacing·Yue-E HeMao-Ping Chu

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