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Figure Legend:
  1. ECG 1: Initial ECG obtained on presentation to the hospital demonstrating disorganized activity. ECG 2: Post defibrillation ECG demonstrating normal sinus rhythm.
  2. Image 1: Pulsed-Wave doppler of mitral inflow shows rhythmic ventricular filling. Image 2: M-mode of the mitral valve leaflets reveals rhythmic opening and closing of valve leaflets.
  3. Clip 1: An apical 4-chamber view with perflutren lipid microsphere contrast shows organized contractility despite ventricular fibrillation.
  4. Clip 2: A parasternal long image without contrast similarly reveals organized contractility.