Which factor requires contacting medical control before administering epinephrine 1:1000?

Which factor requires contacting medical control before administering epinephrine 1:1000?

• A. Out of age range
• B. Cardiac History
• C. Max dose reached
• D. Unknown allergies

Answer: (B)

The critical idea is weighing epinephrine’s cardiovascular effects in someone with a known heart condition. Epinephrine 1:1000 acts on multiple receptors to both open airways and raise blood pressure, but it also increases heart rate and the force of contraction. In a patient with cardiac history, these effects can precipitate chest pain, arrhythmias, or worsened ischemia. Because of that added risk, medical control is advised to confirm that epinephrine is appropriate and to tailor management, especially if the patient has underlying heart disease or is on other cardiac therapies. The other factors don’t inherently raise the same level of concern requiring medical control before giving epinephrine: age range and unknown allergies don’t directly flag a need for physician authorization, and reaching the maximum dose is a dosing limit rather than a contraindication that by itself mandates medical control.

The critical idea is weighing epinephrine’s cardiovascular effects in someone with a known heart condition. Epinephrine 1:1000 acts on multiple receptors to both open airways and raise blood pressure, but it also increases heart rate and the force of contraction. In a patient with cardiac history, these effects can precipitate chest pain, arrhythmias, or worsened ischemia. Because of that added risk, medical control is advised to confirm that epinephrine is appropriate and to tailor management, especially if the patient has underlying heart disease or is on other cardiac therapies. The other factors don’t inherently raise the same level of concern requiring medical control before giving epinephrine: age range and unknown allergies don’t directly flag a need for physician authorization, and reaching the maximum dose is a dosing limit rather than a contraindication that by itself mandates medical control.