Intractable supraventricular tachycardia.
D001282:Atrial Flutter / Q000175:diagnosis; D004562:Electrocardiography; D005260:Female; D006350:Heart Valve Prosthesis; D006801:Humans; D008875:Middle Aged; D008943:Mitral Valve; D013617:Tachycardia, Supraventricular / Q000175:diagnosis*