You are on scene with a 16-year-old female who is hyperventilating at a rate of 70. She has a history of anxiety and is very worked up. Vitals are as follows: BP 152/94, pulse 136 strong and regular, SPO2 99% room air, ETCO2 of 15mmHg.What will soon happen to this patient if she continues to breathe at a respiratory rate of 70?