Acute coronary syndrome (ACS) guidelines have been changed, favoring dual antiplatelet therapy (DAPT) with the more potent P2Y12 inhibitor ticagrelor over clopidogrel (besides aspirin). This change is based on studies that showed benefits of ticagrelor. However, study participants were only partly treated by percutaneous coronary intervention (PCI). In patients who were treated by PCI, this was generally performed using of bare metal or first-generation drug-eluting stents (DES).

CHANGE DAPT is an investigator-initiated, prospective, single centre registry, in which we evaluate the impact of the guideline suggested change in the primary DAPT regimen (from clopidogrel to ticagrelor) on 1-year clinical outcome in ACS patients treated by PCI with newer-generation DES in the Thoraxcentrum Twente.

Inclusion Criteria:

• Presentation with acute coronary syndrome (ACS)
• Treated with newer-generation drug-eluting stent (DES) in coronary artery or bypass graft lesion

Exclusion Criteria:

• Known pregnancy
• Life expectancy less than one year
• Planned elective surgery requiring interruption of DAPT in the first 6 months
• Known intolerance to components of the DES available
• Indication for oral anticoagulation at baseline

Patients admitted to the primary cardiac care clinic of the Thoraxcentrum Twente