The Alkmaar CTO Registry: A Retrospective Cohort Evaluating the Introduction of a Dedicated CTO Program.

Background: Percutaneous coronary interventions (PCI) of chronic total occlusions (CTO) are high risk procedures with low success rates compared to standard PCI. Recently the 'hybrid approach' method has been developed to increase success rate. In 2015 we set up a dedicated program to systematically treat CTOs by this hybrid approach.