Background: Patients undergoing noncardiac surgery can experience cardiac complications, which are a major cause of morbidity and mortality in the perioperative period. The goal of this quality improvement (QI) project was to standardize the preoperative assessment process and improve patient-centered care by implementing evidence-based practice guidelines for electrocardiogram (ECG) recommendations prior to noncardiac surgery. Methods: Three steps were used to implement the American College of Cardiology/American Heart Association (ACC/AHA) recommendation for ECG to reduce variance in practice and decrease surgical cancellations. A pre-and postdesign was used to evaluate 2 outcomes: decreased surgical cancellations for lack of a current ECG and surgical loss opportunity cost. All data were retrospectively collected for 60 days during the pre-and postperiods. Results: Evidence-based, preoperative ECG recommendations were implemented in the electronic medical record (EMR). Overall, ECG guideline adherence increased from 50% to 66% (x 2 5 2.19, p 5 .139) postimplementation. Surgical cancellations because of unmet ECG requirements were reduced from 50% to 34% (x 2 5 2.19, p 5 .139) post-EMR guideline implementation. There was no statistical difference in the cost associated with loss surgical opportunity minutes between the periods (t 5 0. 79, p 5 .43, 95% CI [26.96, 16.24]). Discussion: We successfully implemented an evidence-based guideline recommending specific preoperative ECG requirements within a busy Veterans Administration hospital. This project stimulated ongoing dialogue between the disciplines with positive trends in decreased surgical cancellations.