Highlights
- •Among 8252 patients 39 % were candidates for abbreviated DAPT and 37.8 % for prolonged DAPT.
- •The candidate to abbreviated DAPT had higher risk of all-cause (HR: 1.96) and cardiovascular (HR: 2.10) mortality.
- •Patients' candidate to short or prolonged DAPT had higher risk of MACE.
- •Candidates to abbreviated DAPT had higher risk of MB (sHR: 2.84).
Abstract
Background
Current evidence supports the efficacy of prolonged dual antiplatelet treatment (DAPT)
for patients at high-ischemic risk and low bleeding risk as well as the efficacy and
safety of short DAPT in high-bleeding risk (HBR) patients.
Methods
We evaluated patterns of DAPT candidates in all patients discharged in 2 hospitals
after an acute coronary syndrome (ACS). Patients categorized in 3 groups: 1) short-DAPT
candidates if they met 1 major o 2 minor criteria for HBR, by the 2019 ARC-HBR criteria;
2) prolonged-DAPT candidates if were not HBR and had recurrent ACS, complex percutaneous
coronary interventions or diabetes; 3) standard 12 months DAPT if were not include
in the previous 2 groups. Major bleeding (MB) was registered according to 3 or 5 of
the BARC consortium definitions.
Results
We included 8252 patients and 3215 (39 %) were candidates for abbreviated DAPT, 3119
(37.8 %) for prolonged DAPT, and 1918 (23.2 %) for 12 m DAPT. Relevant differences
were observed between the 3 categories beyond the bleeding risk. Median follow-up
was 57 months. Multivariate analysis identified higher risk of all-cause mortality
(HR: 1.96 95 % CI 1.45–2.67; p < 0.001), cardiovascular mortality (HR: 2.10 95 % CI
1.39–3.19; p < 0.011), MACE (HR: 1.69 95 % 1.50–2.02; p < 0.001) and MB (sHR: 3.41
95 % CI 1.45–8.02; p = 0.005) in candidates to short DAPT. Candidates to prolonged
DAPT had higher risk of MACE (HR: 1.17 95 % CI 1.02–1.35; p = 0.027).
Conclusions
Almost two thirds of patients discharged after an ACS would be candidates for short
or prolonged DAPT and these patients are at higher risk of MACE and mortality.
Graphical abstract

Graphical Abstract
Keywords
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Article info
Publication history
Published online: February 15, 2023
Accepted:
February 13,
2023
Received in revised form:
February 3,
2023
Received:
December 6,
2022
Identification
Copyright
© 2023 Elsevier Ltd. All rights reserved.