How many patients are admitted from your ED with suspected cardiac chest pain? What strategy of testing do you employ to rule out acute myocardial infarction? When and why do you send troponins in this process? In this podcast Ed Carlton, Emergency Medicine Consultant at North Bristol Hospital and Troponin Researcher, talks to us about troponin rule out strategies, recent publications on the topics, where the future of troponin research is heading and most importantly what this all means for our practice. Our previous podcast on troponins acts as a good introduction to this episode. Have a listen to both and we'd love to hear your comments at the bottom of the page and we hope you found this as useful as we did! Enjoy Simon References   Rapid Rule-out of Acute Myocardial Infarction With a Single High-Sensitivity Cardiac Troponin TMeasurement Below the Limit of Detection: A Collaborative Meta-analysis. Pickering JW. Ann Intern Med. 2017  Effect of Using the HEART Score in Patients With Chest Pain in the Emergency Department: A Stepped-Wedge, Cluster Randomized Trial. Poldervaart JM. Ann Intern Med. 2017 Comparison of the Efficacy and Safety of Early Rule-Out Pathways for Acute Myocardial Infarction. Chapman AR. Circulation. 2017