ECG of the Month No. 33/Concepts and lingo to clarify and learn. A minor or major difference? It depends on your viewpoint!
D001145:Arrhythmias, Cardiac / Q000175:diagnosis*; D004562:Electrocardiography; D006327:Heart Block / Q000175:diagnosis; D006801:Humans; D008297:Male; D008875:Middle Aged; D013610:Tachycardia / Q000175:diagnosis