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.
Keywords: Amplatz support wire technique; Amplatz wire; Anchor balloon; Antidromic snare technique; CS atresia; CS cannulation; Orthodromic snare technique; Vein selectors.
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