E-49 | Moderate to High Precise-DAPT Score Is Associated With Increased Risk of Bleeding and Mortality in a Predominantly Hispanic Population

Abstract

Bleeding is a major complication for patients on dual anti-platelet therapy (DAPT) post percutaneous coronary intervention (PCI). Predicting Bleeding Complications in Patients Undergoing Stent Implantation and Subsequent Dual Antiplatelet Therapy (PRECISE-DAPT) score has been widely used inEurope for the prediction of bleeding during DAPT with a cut-off of ≥ 25 as high risk. We determined the predictive accuracy of PRECISE-DAPT scores in a predominantly Hispanic population. A retrospective single center cohort study was conducted with patients on DAPT post PCI between 2014 and 2021. PRECISE-DAPT score was assessed and classified into three categories (low: ≤17; moderate:18 to 24; high: ≥25). The primary endpoints were incidence of bleeding as evaluated using Bleeding Academic Research Consortium (BARC) ≥ 2 events and all-cause mortality. Kaplan Meier curve, log rank test and Cox proportional hazards models were performed. Receiver operating characteristic (ROC) curve analysis was performed to determine optimal cut-offs. Out of 829 patients(age 62 ± 12 years, 66% males, 78% Hispanic), 46 (5.5%) had BARC ≥ 2 bleeding complications and 38 (4.5%) had deaths after PCI for a mean follow up of 2.8 ± 2.4 years. Compared with low PRECISE-DAPT risk score, moderate and high-risk scores were associated with increased risk of bleeding (3.18%, 10.22%, and 7.69 %, respectively, p=0.002). Similarly, in comparison with low score, moderate and high score groups had higher incidence of all-cause mortality (2.12%, 6.57%, and 7.69% respectively, p<0.001). In the adjusted analysis, the combined moderate and high scores predicted higher risk of bleeding (hazard ratio [HR] 2.89; 95%CI: 1.47-5.71, p=0.002) and all-cause mortality (HR 5.78, 95%CI 2.41-13.83, p <.0001). A cut-off value ≥19 of the PRECISE-DAPT score classified bleeding (AUC=0.63; 95%CI: 0.55-0.71) and all-cause mortality (AUC=0.68; 95%CI: 0.60-0.77). Our results suggest moderate to high PRECISE-DAPT score was associated with the increased risk of bleeding and mortality in patients with DAPT post PCI in a predominantly Hispanic population with an optimal cut-off of ≥19 instead of 25.