Peripheral Endothelial Function Assessment of Patients on Ticagrelor vs. Clopidogrel Who Have Undergone PCI

Patients that are randomly selected to receive ticagrelor during the first phase of the study will receive the dose of 90 mg BD orally. This will be continued for 4 weeks before the endothelial function test will be performed. If the patients are assigned in the 2nd phase of the study, they will receive 90 mg BD orally for 5 weeks (4 weeks plus a 1 week washout period).

Patients that are randomly selected to receive ticagrelor during the first phase of the study will receive the dose of 75 mg OD orally. This will be continued for 4 weeks before the endothelial function test will be performed. If the patients are assigned in the 2nd phase of the study, they will receive 75 mg OD orally for 5 weeks (4 weeks plus a 1 week washout period).