Atrial rhythm in ventricular tacycardia occurring during cardiac catheterization.
D006328:Cardiac Catheterization; D004562:Electrocardiography; D006325:Heart Atria / Q000503:physiopathology; D006327:Heart Block; D006329:Heart Conduction System / Q000503:physiopathology; D006352:Heart Ventricles / Q000503:physiopathology; D006801:Humans; D013610:Tachycardia / Q000175:diagnosis*