Bioresorbable Vascular Scaffold Stent Delivered to Tortuous Lesions by Using the "Five-in-Six" System.

A 5Fr ST01, which is a straight-tip guiding catheter with an inner lumen of 1.5 mm, is frequently used to perform the "child-in-mother" technique, which is also referred to as the "5-in-6" technique. A 6Fr or larger size guiding catheter can facilitate bioresorbable everolimus-eluting vascular scaffold (BVS) delivery. For tortuous lesions, the 5-in-6 technique can facilitate balloon catheters and the BVS in crossing tortuous lesions by increasing the back-up support. However, this maneuver couldn't be used for the larger size of BVS like 3.5-mm. Besides, it is necessary to preload the BVS into 5Fr ST01 guiding catheter to check whether this could really be done. We present a case in which a 5Fr ST01 catheter and the 5-in-6 technique were successfully used in distal delivery of a BVS to cross a very tortuous right coronary artery lesion.