摘要
In order to improve the success rate of chronic total occlusion (CTO)percutaneous coronary intervention (PCI), retrograde approach has been attracted more attention.Recent study reported the collateral perforation rate was 6.9% in retrograde CTO PCI.[1,2] Collateral related perforations were higher in patients with the epicardial collateral than that with the septal collateral.[3]Several techniques have been developed to deal with the collateral branch perforation.Here,we described the treatment of epicardial collateral branch perforation by absorbable suture segments embolization through microcatheter during retrograde CTO PCI.
