You respond to a report of a syncopal episode. Upon arrival…
You respond to a report of a syncopal episode. Upon arrival you find a 32 year old female lying next to her desk at work. Patient states that she was just sitting at her desk typing when she suddenly felt a flutter sensation in her chest associated with light headedness and SOB. Co-workers laid her down to the ground and called 911. Vital signs reveal a blood pressure of 112 / 64, heart rate of 200, respirations of 12 bpm, and a pulse oximetry of 91. The EKG reveals AV nodal reentrant tachycardia (AVNRT). Which of the following medications would be the most appropriate to administer in this situation: