Epinephrine is indicated in ICEMA standing orders for what emergency?

• A. Myocardial infarction with chest pain
• B. Anaphylaxis with airway compromise, wheezing, or hypotension
• C. Asthma not in distress
• D. Hypoglycemia with sweating

Answer: (B)

Epinephrine is used in anaphylaxis because it acts on both the cardiovascular and respiratory systems to reverse the deadly features of the reaction. Its alpha-adrenergic effects constrict blood vessels, raising blood pressure and reducing swelling in the airway, while its beta-adrenergic effects relax bronchial smooth muscle to relieve wheezing and bronchospasm. It also helps stabilize the membranes of mast cells, limiting further mediator release. In ICEMA standing orders, this combination is indicated for anaphylaxis when there is airway compromise, wheezing, or hypotension, making it the correct choice for this scenario.

The other situations don’t require epinephrine in these protocols. Myocardial infarction with chest pain is treated with measures to protect the heart and manage pain/ischemia; epinephrine can worsen tachycardia and oxygen demand. Asthma not in distress lacks the life-threatening airway compromise that necessitates epinephrine. Hypoglycemia with sweating is treated with glucose rather than epinephrine.