What is the normal timing of discontinuation of antiplatelet drug use in acute coronary syndromes before coronary artery bypass grafting?
In this multicenter clinical trial that included 786 adult patients, administration of ticagrelor with or without aspirin was associated with the same risk of bleeding and major complication after cardiac surgery compared with aspirin alone. However, the risk was significantly increased among patients in whom ticagrelor was administered 1 day before or up until surgery.
The use of ticagrelor is safe before coronary artery bypass grafting, particularly if its use is discontinued more than 24 hours before surgery.
The optimal timing of discontinuation of ticagrelor before cardiac surgery is controversial.
To evaluate the safety of preoperative use of ticagrelor with or without aspirin in patients with acute coronary syndromes (ACS) undergoing isolated coronary artery bypass grafting (CABG) compared with aspirin alone.
Design, Setting, and Participants
This prospective, multicenter clinical trial was performed at 15 European centers of cardiac surgery. Participants were patients with ACS undergoing isolated CABG from the European Multicenter Study on Coronary Artery Bypass Grafting (E-CABG) registry between January and September 2015.
Before surgery, patients received ticagrelor with or without aspirin or aspirin alone.
Main Outcomes and Measures
Severe bleeding as defined by the Universal Definition of Perioperative Bleeding (UDPB) and E-CABG bleeding classification criteria. A propensity score–matched analysis was performed to adjust for differences in baseline and operative covariates.
Of 2482 patients from the E-CABG registry, the study cohort included 786 (31.7%) consecutive patients with ACS (mean [SD] age, 67.1 [9.3] years; range, 32-88 years), and 132 (16.8%) were female. One-to-one propensity score matching provided 215 pairs, whose baseline and operative covariates had a standardized difference of less than 10%. Preoperative use of ticagrelor was associated with a similar risk of bleeding according to the UDPB and E-CABG bleeding classifications, but the incidence of platelet transfusion was higher in the ticagrelor group (13.5% [29 of 215] vs 6.0% [13 of 215]). Compared with those receiving aspirin alone, continuing ticagrelor up to the time of surgery or discontinuing its use less than 2 days before surgery was associated with a higher risk of platelet transfusion (22.7% [5 of 22] vs 6.4% [12 of 187]) and E-CABG bleeding grades 2 and 3 (18.2% [4 of 22] vs 5.9% [11 of 187]) and tended to have an increased risk of UDPB grades 3 and 4 (22.7% [5 of 22] vs 9.6% [18 of 187]). Among patients in whom antiplatelet drug use was discontinued at least 2 days before surgery, the incidence of platelet transfusion was 12.4% (24 of 193) in the ticagrelor group and 3.6% (1 of 28) in the aspirin-alone group.
Conclusions and Relevance
In propensity score–matched analyses among patients with ACS undergoing CABG, the use of preoperative ticagrelor with or without aspirin compared with aspirin alone was associated with more platelet transfusion but similar degree of bleeding; in patients receiving ticagrelor 1 day before or up until surgery, there was an increased rate of severe bleeding.
Gherli R, Mariscalco G, Dalén M, Onorati F, Perrotti A, Chocron S, Verhoye JP, Gulbins H, Reichart D, Svenarud P, Faggian G, Santarpino G, Fischlein T, Maselli D, Dominici C, Musumeci F, Rubino AS, Mignosa C, De Feo M, Bancone C, Gatti G, Maschietto L, Santini F, Nicolini F, Gherli T, Zanobini M, Kinnunen E, Ruggieri VG, Rosato S, Biancari F. Safety of Preoperative Use of Ticagrelor With or Without Aspirin Compared With Aspirin Alone in Patients With Acute Coronary Syndromes Undergoing Coronary Artery Bypass Grafting. JAMA Cardiol. 2016;1(8):921-928. doi:10.1001/jamacardio.2016.3028