Welcome to Dr. Andreas Roeschl, who is a cardiologist and ECG instructor in Germany.  He will have a recurring blog on the Guru, contributing his knowledge about ECG and teaching, along with ECGs from his collection.  His ECGs are digitized and beautiful quality for reproduction, and his contributions will be a great asset to any student or teacher of ECG.  Dr. Ken Grauer and I want you to feel free to ask us and Dr. Roeschl any questions you have about ECG or teaching ECG.  That is the mission of this website - to make it easier for instructors to teach.