Wilcox T, et al. - Via 540,717 patients undergoing noncardiac surgery between 2009 and 2010 from the US National Surgical Quality Improvement Program, researchers assessed the conventional cardiovascular risk scores for prediction acute stroke following noncardiac surgery. For the primary outcome of stroke, patients were prospectively followed for 30 days postoperatively. To anticipate perioperative stroke, recognized cardiovascular and perioperative risk scores (CHADS₂, CHA₂DS₂-VASc, Revised Cardiac Risk Index, Mashour et al risk score, Myocardial Infarction or Cardiac Arrest risk score, and National Quality Improvement Project American College of Surgeons surgical risk calculator) were evaluated. Investigators found that stroke occurred after 1,474 noncardiac surgeries. They concluded that the Myocardial Infarction or Cardiac Arrest risk score and American College of Surgeons surgical risk calculator surgical risk scores provide outstanding risk discrimination in most patients undergoing non-cardiac surgery for perioperative stroke. In patients undergoing vascular surgery, stroke forecast was less ideal. Older, male sex, lower body mass index, and having undergone vascular surgery or neurosurgery were all more likely in patients who had a perioperative stroke vs patients who did not.