Tachycardia and mitral valve disease.
D006801:Humans; D008944:Mitral Valve Insufficiency / Q000188:drug therapy*; D008946:Mitral Valve Stenosis / Q000188:drug therapy*; D013610:Tachycardia / Q000188:drug therapy*; D014700:Verapamil / Q000627:therapeutic use*
D014700:Verapamil