To study the clinical prognosis and related factors affecting optimal medical therapy (OMT) compliance of patients with coronary artery disease (CAD) undergoing percutaneous coronary intervention (PCI).

A prospective study was conducted to select 3 818 patients who were diagnosed with CAD and successfully underwent PCI in TEDA International Cardiovascular Hospital from October 2016 to September 2017. The clinical information and application of OMT during hospitalization and 1 year later were collected for research.The patients were divided into OMT group and non OMT group according to whether they adhered to OMT during follow-up one year after discharge. After comparing the imbalance baseline data of hypertension,diabetes and hyperlipidemia with propensity score,demographic characteristics, coronary revascularization history, CAD, laboratory related laboratory examinations,and the use of OMT drugs were compared between the two groups. Cox regression model was used to analyze the relationship between long-term OMT and clinical prognosis in patients with CAD.Multivariate binary logistic regression was used to analyze the related factors affecting long-term OMT compliance.

A total of 3 818 cases of CAD patients were matched by propensity score and 2 596 patients were included in the study. There were 1 609 males and 987 females. The age was (62.51±9.56) years old.One year later,1298 patients (50%) insisted on OMT,including dual antiplatelet therapy(DAPT), statins, β-blockers and ACEI/ARB were 97.0% (2 517/2 596),94.5%(2 454/2 596),69.6% (1 806/2 596) and 64.2% (1 666/2 596), especially angiotensin converting enzyme inhibitors / angiotensin receptor blockers and β Receptor blockers decreased the most.Cox regression analysis showed that after adjusting for other factors, compared with non-adherence to OMT group,OMT after PCI was associated with better prognosis (HR=0.416,95%CI 0.270-0.641,P<0.001). The prognosis of CAD patients with history of old myocardial infarction (HR=1.804,95%CI 1.070-3.041,P=0.027),cardiac insufficiency (HR=2.074,95%CI 1.161-3.702,P=0.014),multivessel coronary disease (HR=2.211,95%CI 1.228-3.983,P=0.008) and BMI>24 (HR=1.570,95%CI 1.037-2.377,P=0.033) were related to worse clinical outcomes. Multi-factor binary Logistic regression showed that OMT at hospitalization was a strong influencing factor of long-term adherence to OMT (OR=41.278,95%CI 29.961-56.871,P<0.001). Patients with higher education,employee medical insurance and with history of PCI tend to persist in OMT.

The medication compliance of patients with long-term OMT after PCI is still poor,while the high compliance of OMT is related to the lower incidence of adverse cardiovascular events,including death, nonfatal myocardial infarction and stroke. If there is no obvious contraindication,all patients after PCI should adhere to OMT.

Coronary artery disease; Percutaneous coronary intervention; Optimal medical therapy; Clinical prognosis; Influence factors