Search and discover over 2,500 ECG reports written by cardiologist and intensivist Dr George Nikolić OAM.
Report: Sinus rhythm Third degree AV block Pacemaker rhythm Reversed arms/legs leads! Comment: Flat Lead 1 is virtually pathognomonic of legs/arms reversal. The P waves also assume retrograde polarity (one is seen in the last cycle in leads 1, 2, 3).