Hernan Mejia-Renteria completed his specialized training in cardiology at the San Carlos Clinical Hospital in Madrid and later trained at the same center as an interventional cardiologist. He obtained a Doctorate degree (Ph.D.) from the Complutense University of Madrid, and his thesis was focused on the application of coronary physiology in different clinical scenarios of ischemic heart disease. He is accredited in specific training for the practice of hemodynamics and interventional cardiology by the Spanish Society of Cardiology. He has published numerous scientific articles on coronary physiology, functional angiography, intracoronary imaging techniques, and takotsubo syndrome and is the author of several chapters in academic cardiology books. His research interests include coronary artery obstruction, reserves, percutaneous coronary intervention, takotsubo cardiomyopathy, cardiogenic shock, and coronary artery spasm.