(ECG 3-3) WPW case 3.

Tachycardia with wide QRS complex. The diagnosis is SVT with LBBB.

Following cardioversion with carotid massage. Note the change in P wave characteristic from retrograde P wave to NSR and the ECG has characteristic of NSR and LBBB.

Patient. 53 year old male with cardiac history includes previous stent placement of the LAD lesion in 1999. He has been treated for dilated cardiomyopathy with ejection fraction of 30-35%. Patient was admitted this time for treatment of rapid heart beat.