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(A) Engagement of RCA ostium with 6 F Hockey Stick 4.0 guide catheter to address long segment CTO of ostio-proximal segment with bridging collateral. (B) Navigation of 2.1 F Tornus (in BU lesion) after Gaia 3 guidewire penetrates the proximal cap to be positioned in the distal true lumen. (C) Final result after spot stenting in long calcified lesion.
BU = balloon-uncrossable; CTO = chronic total occlusion; RCA = right coronary artery.
