Case Presentation: A 33-year-old woman with no cardiac risk factors, who was 8-weeks post-partum with an unremarkable peripartum course, suddenly collapsed at a park. Bystander CPR was initiated and the initial cardiac rhythm, which was ventricular fibrillation (VF), converted to sinus rhythm after defibrillation. While in the emergency department, she had another episode of VF, [...]