After eating at a local restaurant, a 20-year-old male complains of blurred vision, difficulty speaking, and difficulty breathing. he is conscious; however, his respirations are profoundly labored and producing minimal tidal volume. you should:
a. position him supine and elevate his legs.
b. apply oxygen via a nonrebreathing mask.
c. assist his ventilations with high-flow oxygen.
d. request a paramedic to administer atropine.