If a patient immediately starts gasping for air and their blood pressure drops below 90/60 mmHg, what would you do to manage the allergic reaction?

If a patient immediately starts gasping for air and their blood pressure drops below 90/60 mmHg, what would you do to manage the allergic reaction?

• A. Administer epinephrine
• B. Administer antihistamines
• C. Administer aspirin
• D. Administer oxygen only

Answer: (A)

Anaphylaxis requires immediate action to reverse both airway swelling/bronchospasm and the dangerous drop in blood pressure. Epinephrine is the first-line treatment because it acts on multiple targets at once: its beta-2 effect relaxes bronchial smooth muscle to relieve airway constriction, while its alpha-1 effect causes vasoconstriction to raise blood pressure and reduce capillary leakage. In a patient who suddenly gasps for air and has hypotension, you should administer epinephrine right away, intramuscularly into the mid-thigh (typical adult dose 0.3–0.5 mg of a 1:1000 solution; repeat every 5–15 minutes if symptoms continue or recur). While epinephrine is given, provide high-flow oxygen and monitor vitals; place the patient supine with legs elevated if there are no contraindications. Call for emergency services for advanced care and possible additional doses. Antihistamines and corticosteroids can be used as adjuncts later, but they do not treat the acute life-threatening airway and BP compromise as promptly as epinephrine. Oxygen alone cannot reverse the underlying mechanisms of anaphylaxis.

Anaphylaxis requires immediate action to reverse both airway swelling/bronchospasm and the dangerous drop in blood pressure. Epinephrine is the first-line treatment because it acts on multiple targets at once: its beta-2 effect relaxes bronchial smooth muscle to relieve airway constriction, while its alpha-1 effect causes vasoconstriction to raise blood pressure and reduce capillary leakage. In a patient who suddenly gasps for air and has hypotension, you should administer epinephrine right away, intramuscularly into the mid-thigh (typical adult dose 0.3–0.5 mg of a 1:1000 solution; repeat every 5–15 minutes if symptoms continue or recur). While epinephrine is given, provide high-flow oxygen and monitor vitals; place the patient supine with legs elevated if there are no contraindications. Call for emergency services for advanced care and possible additional doses. Antihistamines and corticosteroids can be used as adjuncts later, but they do not treat the acute life-threatening airway and BP compromise as promptly as epinephrine. Oxygen alone cannot reverse the underlying mechanisms of anaphylaxis.