Beginning of Ventricular Entrainment for Differentiation Between AVNRT and AVRT | ||||
| Zagazig University Medical Journal | ||||
| Articles in Press, Accepted Manuscript, Available Online from 08 June 2021 | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/zumj.2021.73789.2208 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Reem Basha  1; Mohamed Mohsen2; mahmoud abdelaziz3; Ghada Ibrahim4; Magdy Abd El Samie4
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| 1Cardiology department, faculty of medicine,Zagazig university | ||||
| 2Cardiology department,faculty of medicine, ZUH, zagazig, egypt | ||||
| 3lecturer of cardiology department ,zagazig university | ||||
| 4Cardiology department,Zuh | ||||
| Abstract | ||||
| Abstract Background: Differentiation between atrioventricular nodal reentry tachycardia (AVNRT) and accessory pathway-mediated atrioventricular reentrant tachycardia (AVRT) is challenging even during electrophysiological testing. Objective: To use the beginning of RV entrainment to differentiate between AVRT and AVNRT as an independent criterion with high sensitivity and specificity. Methods: We studied 50 patients with supra-ventricular tachycardia. RV pacing was performed 10-40ms faster than tachycardia. Once a fixed QRS morphology was observed in 12-leads ECG, we determined after which beat the atrial perpetuation had been achieved. Results: In all the 19 patients who had AVRT, atrial perpetuation occurred from the first beat. While, in all 31 cases of AVNRT atrial perpetuation occurred within the 2 beat or more. Conclusion: Analysing the beginning of ventricular entrainment can indeed differentiate between AVRT and AVNRT cases easily with a high positive predictive value. Keywords: Supra-ventricular tachycardia; Atrio-ventricular reentry tachycardia; AV Reentry tachycardia; Entrainment, Electrophysiological study, EP lab. | ||||
| Keywords | ||||
| Supra-ventricular tachycardia; Atrio-ventricular reentry tachycardia; AV Reentry tachycardia; Entrainment | ||||
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