A practical approach to differentiating tachyarrhythmias A practical approach to differentiating tachyarrhythmias. AVNRT, atrioventricular nodal re-entrant tachycardia; BBB, bundle-branch block; EAT, ectopic atrial tachycardia; Fib, fibrillation; IART, intra-atrial re-entrant tachycardia; JET, junctional ectopic tachycardia; MAT, multifocal atrial tachycardia; ORT, orthodromic reciprocating tachycardia; PJRT, permanent junctional reciprocating tachycardia; SVT, supraventricular tachycardia; VT, ventricular tachycardia. (Adapted with permission from Walsh EP. Clinical approach to diagnosis and acute management of tachycardias in children. In: Walsh EP, Saul JP, Triedman JK, eds. Cardiac Arrhythmias in Children and Young Adults With Congenital Heart Disease. Philadelphia, PA: Lippincott Williams & Wilkins, 2001:95-113; and Kaltman H, Shah M. Evaluation of the child with an arrhythmia. Pediatr Clin North Am. 2004;51:1537-1551.) Source: Chapter 12. Cardiac Arrhythmias, Pediatric Practice: Cardiology Citation: Gleason M, Rychik J, Shaddy R. Pediatric Practice: Cardiology; 2012 Available at: http://accesspediatrics.mhmedical.com/DownloadImage.aspx?image=/data/books/glea1/glea1_c012f026.png&sec=41025844&BookID=525&ChapterSecID=41023852&imagename= Accessed: December 23, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved