title: Narrow QRS complex tachycardia with unusual atrial activation. What is the mechanism?
authors: Cardiology Service, Hospital Universitario de Getafe, Madrid, Spain.
authors: Paula
authors: P
authors: Awamleh
authors: Francisco G
authors: FG
authors: Cosío
authors: Agustín
authors: A
authors: Pastor
authors: Ambrosio
authors: A
authors: Núñez
mesh_terms: D004562:Electrocardiography; D006325:Heart Atria / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D013610:Tachycardia / Q000503:physiopathology*