A multiparous 41 y.o. female with history of an episode Atrial Fibrillation with Rapid Ventricular Response (AF RVR) in the setting of pregnancy 15 years prior and recent stillbirth presented with recurrent AF RVR in the setting of a 34 week gestation. The patient began feeling SOB with fast heart rate and dizziness the previous evening (approximately 12 hours prior). Since it continued, she presented to a smaller hospital, where her EKG showed possible AF RVR with rates as high as 180 bpm, then