73.A 49-year-old woman presents to the ED with difficulty breathing after
a morning jog. Her initial vitals include a HR of 60 beats per minute, a BP of
120/55 mm Hg, and an RR of 20 breaths per minute with an oxygen satura-
tion of 94% on room air. Upon physical examination, the patient appears to
be in mild distress with audible wheezing. She is able to speak in partial sen-
tences and states that she occasionally uses an inhaler. Given this patient’s
history and physical examination, which of the following measures should
be taken next?
a. Peak expiratory flow
b. Chest radiograph
c. β-Natriuretic peptide level
d. Rectal temperature
e. ABG
62 Emergency Medicine