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contentuptodate· Content· item f25_62_26595

©2013 UpToDate ® Print Email Atrial flutter and AV block Intraatrial reentry tachycardia in an 18 year-old man following Mustard operation for d-transposition of the great arteries. There is 2:1 atrioventricular conduction and low amplitude "flutter" waves (f waves), making the diagnosis difficult to recognize. The administration of adenosine results in the obvious appearance of f waves. The sweep speed is 50 mm/sec.