A 22yo man has rushed into the ED asking for help. He describes recurrent episodes of
fearfulness, palpitations, faintness, hyperventilation, dryness of the mouth with peri-oral
tingling and cramping of the hands. His symptoms last 5-10 mins and have worsened since their
onset 3months ago. He is worried he may be having a heart attack. An ECG shows sinus
tachycardia. What is the single most appropriate immediate intervention?
a. High flow oxygen
b. IV sedation
c. Rebreathe into a paper bag
d. Refer for anxiety management course
e. Refer for urgent cardiology opinion
answer: C
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