Document Review and Approval This document was reviewed by 8 official reviewers nomi- nated by the ACC, AHA, and HRS, and 25 individual content reviewers. Reviewers RWI information was distributed to the GWC and is published in this document (Appendix 2). This document was approved for publication by the gov- erning bodies of the ACC, the AHA, and the HRS. 1.4. Scope of the Guideline The purpose of this joint ACC/AHA/HRS document is to provide a contemporary guideline for the management of adults with all types of SVT other than atrial fibrillation (AF). Although AF is, strictly speaking, an SVT, the term SVT generally does not refer to AF. AF is addressed in the 2014 ACC/AHA/HRS Guideline for the Management of Atrial Fibrillation (2014 AF guideline).10 The present guide- line addresses other SVTs, including regular narrow QRS complex tachycardias, as well as other, irregular SVTs (eg, atrial flutter with irregular ventricular response and multi- focal atrial tachycardia [MAT]). This guideline supersedes the 2003 ACC/AHA/ESC Guidelines for the Management of Patients With Supraventricular Arrhythmias. 11 It incor- porates new and existing knowledge derived from published clinical trials, basic science, and comprehensive review arti- cles, along with evolving treatment strategies and new drugs. Some recommendations from the earlier guideline have been updated as warranted by new evidence or a better under- standing of existing evidence, whereas other inaccurate, irrelevant, or overlapping recommendations were deleted or modified. Whenever possible, we reference data from the acute clinical care environment; however, in some cases, the reference studies from the invasive electrophysiology labo- ratory inform our understanding of arrhythmia diagnosis and management. 