only sparse epidemiological data are available regarding the risk of ischemic stroke (iS) after coronary artery bypass surgery (cABG). Here we aimed to describe the incidence and predictors of iS associated with cABG performed after acute myocardial infarction (AMi), as well as trends over time. We analyzed data for 248,925 unselected AMI patients. We separately analyzed groups of patients who underwent CABG early or late after the index infarction. IS incidence rates per year at risk were 15.8% (95% confidence interval, 14.5-17.1) and 10.9% (10.6-11.2), respectively, among patients with and without CABG in the early cohort, and 4.0% (3.5-4.5) and 2.3% (2.2-2.3), respectively, among patients with and without cABG in the late cohort. predictors of post-AMi iS included prior iS, cABG, prior atrial fibrillation, prior hemorrhagic stroke, heart failure during hospitalization, older age, diabetes mellitus, and hypertension. Reduced IS risk was associated with use of statins and P2Y12 inhibitors. IS incidence markedly decreased among patients who did not undergo cABG, while no such reduction over time occurred among those who underwent CABG. This emphasizes the need to optimize modifiable risk factors and to consistently use treatments that may reduce iS risk among cABG patients. Ischemic stroke (IS) is often a devastating event, carrying a high mortality rate and huge economic consequences for society 1,2. During the early period following an acute myocardial infarction (AMI), there is an increased risk of stroke, particularly stroke of ischemic origin 3. Although the mechanisms behind post-AMI IS are largely unknown, several risk factors have been identified, including older age, female sex, prior IS, prior diabetes mellitus, atrial fibrillation, chronic kidney disease, heart failure during hospitalization, and ST-elevation myocardial infarction (STEMI)0 4-7. The initial increased risk of IS after AMI seems to be associated with pro-thrombotic factors, such as platelet activation, inflammation, and sympathetic activation 1,8-10. Patients undergoing coronary artery bypass surgery (CABG) also show an increased risk of IS, with the majority of CABG-associated strokes occurring postoperatively 11. The most important risk factors for CABG-associated stroke include advanced age, prior cerebrovascular disease, prior carotid artery stenosis, prior peripheral vascular disease, prolonged cardiopulmonary bypass time, and postoperative atrial fibrillation 12,13. Undergoing CABG within the acute phase after AMI has also been identified as a risk factor for post-AMI IS 2,5. However, only limited data are available regarding the risk of IS associated with post-AMI CABG. There is a particular lack of long-term follow-up data and outcome data for patients undergoing CABG during a more stable post-AMI phase. To date, no predictors of IS in patients undergoing post-AMI CABG surgery have been conclusively identified, and additional knowledge is required to develop preventive measures. Over the last decade, the risk of IS after AMI has d...