Numerous techniques and devices have been developed to treat coronary bifurcations; however, these types of lesions remain some of the most challenging, both in terms of procedural success and outcome. Several techniques are currently being utilized to treat coronary bifurcation lesions, including a 1-stent provisional stenting technique. Various 2-stent techniques are also performed, including: double kiss crush (DK crush4), culotte, T and protrusion (TAP), crush, mini-crush, reverse crush and V-stenting. The optimal technique for bifurcation stenting when two stents are required remains controversial; however, the DK crush technique appears to have stronger data, especially for left main bifurcations. However, DK crush can be challenging to perform, requiring several steps and frequent troubleshooting.

The adoption of DK crush and other 2-stent bifurcation strategies, as well as the rigor of implementation, have received limited study. This study is designed as an observational, multi-center registry that will collect information on treatment strategies and outcomes of consecutive patients undergoing percutaneous coronary interventions (PCI) in coronary bifurcations among various participating centers, in order to determine the frequency of bifurcation PCI, the procedural strategies utilized,