Citation: Cardiac electrophysiology clinics. 11(1):75-87, 2019 Mar..Journal: Cardiac electrophysiology clinics.Published: ; 2019ISSN: 1877-9182.Full author list: Worley SJ.UI/PMID: 30717855.Subject(s): IN PROCESS -- NOT YET INDEXEDInstitution(s): MedStar Heart & Vascular InstituteActivity type: Journal Article.Medline article type(s): Journal Article | ReviewOnline resources: Click here to access onlineDigital Object Identifier: https://dx.doi.org/10.1016/j.ccep.2018.11.003 (Click here)Abbreviated citation: Card Electrophysiol Clin. 11(1):75-87, 2019 Mar.Abstract: The EP Clinics article "How to implant CRT devices in a busy clinical practice" describes the basics of the "interventional telescoping technique". This article focuses on specific circumstances where the tools and techniques are invaluable: (1) inability to locate the coronary sinus (CS), (2) inability to advance a catheter into the CS, (3) patients with CS atresia, (4) unstable CS access, (4) angulated target veins, (5) small and/or tortuous target veins, (6) target veins into which a wire cannot be advanced, (7) target veins with a drain pipe takeoff, (8) target veins close to the CS ostium.Abstract: Copyright (c) 2018 The Author. Published by Elsevier Inc. All rights reserved.