Methods: Reports of 1,549 patients (993 males, 556 females; mean age 62.9±10.9 years; range 20 to 87 years) (184 normal CAG, 1,365 CAD) who were performed CAG between October 2009 and February 2012 were retrospectively analyzed. Medication data were collected between August 2013 and November 2013 from patients’ pharmacy refill data. Usage of aspirin, tienopiridine, statin, angiotensin converting enzyme inhibitor, beta blocker (BB), warfarin, angiotensinogen receptor blocker, nitrate, trimetazidine, calcium channel blocker, and diuretic were recorded.

Results: Usage rates of angiotensinogen receptor blocker, trimetazidine, calcium channel blocker, warfarin, diuretic, and fibrate were not statistically different between patients with CAD and normal CAG. Rates of using aspirin (50.3% vs. 39.1%, p=0.005), tienopiridine (25.6% vs. 9.8%, p<0.001), angiotensin converting enzyme inhibitor (38.0% vs. 21.7%, p<0.001), statin (48.5% vs. 30.6%, p<0.001), BB (56.8% vs. 40.2%, p<0.001) and nitrate (15.1% vs. 6.0%, p<0.001) were higher in patients with CAD. Rate of patients using all four drugs, antiplatelet agent, statin, angiotensin converting enzyme inhibitor, and BB was only 13.1% in CAD group. Only 25.8% of patients with CAD used all three of antiplatelet agent, statin, and BB.

Conclusion: Patients with CAD are not on optimal medical treatment. These patients should be questioned in every visit in terms of the status of their treatment to administer the optimum medications to reduce cardiovascular mortality and morbidity.