Jacc: cardiovascular interventions vol.16, no.6, 2023 title: tunnel in landslide technique to "block and deliver" a novel method to deliver covered stent for coronary perforation.A 63-year-old man underwent percutaneous coronary intervention of a right coronary artery (rca) chronic total occlusion for symptom improvement.The coronary arteries were engaged using 8-f guide catheters.The proximal cap was ambiguous and the occlusion long and calcified with a j-cto (multicenter cto registry of japan) score of 3 (figure 1a).Retrograde attempts failed.Antegrade dissection re-entry was attempted.A gladius mongo (asahi intecc) wire was knuckled but advanced outside the vessel architecture (figures 1b and 1c), likely through a branch resulting in ellis type iii perforation (figure 1d) and cardiac tamponade requiring pericardiocentesis.The wire was pulled and redirected into the distal rca extraplaque space (figure 1e).A 3-mm balloon was inflated on the wire to tamponade the perforation.A repeat angiogram revealed worsening extravasation (figure 1f).
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