Supraventricular arrhythmias are common and patients are often symptomatic, requiring management with drugs and electrophysiological procedures. The ESC published management Guidelines for supraventricular tachycardias (SVTs) in 20031; corresponding US guidelines have also been published, the most recent being in 2015.2 There is a need to provide expert recommendations for professionals participating in the care of patients presenting with SVT. In addition, several associated conditions where SVTs may coexist need to be explained in more detail. To address this topic, a Task Force was convened by the ESC, with the remit to comprehensively review the published evidence and to publish Guidelines on the management of patients with SVT, with up-to-date consensus recommendations for clinical practice. This document summarizes current developments in the field, with a focus on advances since the last ESC Guidelines were published, and provides general recommendations for the management of adults with SVT based on the principles of evidence-based medicine. 2.1 Evidence review Members of the Task Force were asked to perform a detailed literature review, weigh the strength of evidence for or against a particular treatment or procedure, and include estimates of expected health outcomes where data exist. Patient-specific modifiers, comorbidities, and issues of patient preference that might influence the choice of particular tests or therapies were considered, as were frequency of follow-up and cost-effectiveness. In controversial areas, or with regard to issues without evidence other than usual clinical practice, consensus was achieved by agreement of the expert panel after thorough deliberation. The document was peer-reviewed by official external reviewers. The strengths of the recommendations and levels of evidence of particular management options were weighed and graded according to predefined scales, as outlined above in Tables 1 and 2, respectively. Overall, these Guidelines include evidence and expert opinions from several countries. The pharmacological and non-pharmacological antiarrhythmic approaches discussed may therefore include drugs that do not have the approval of governmental regulatory agencies in all countries.