In ROSC, how should push-dose epinephrine be prepared?

In ROSC, how should push-dose epinephrine be prepared?

• A. Eject 1 mL NS from a 10 mL pre-load flush syringe, draw up 1 mL Epinephrine 1:10,000 and mix gently
• B. Eject 2 mL NS, draw up 2 mL Epinephrine 1:10,000, and mix gently
• C. Eject 1 mL NS, draw up 1 mL Epinephrine 1:1000 and mix vigorously
• D. Eject 1 mL NS, draw up 0.5 mL Epinephrine 1:10,000 and mix gently

Answer: (A)

The test is checking how to prepare a safe, effective push-dose epinephrine dose for ROSC by creating a dilute solution that delivers a precise microdose. The goal is to have a 10 mL syringe containing epinephrine 1:10,000 diluted with normal saline so that each milliliter of the mixture provides about 10 micrograms of epinephrine. The standard way to achieve this is to take a 10 mL flush syringe, eject 1 mL of saline to make space, then withdraw 1 mL of epinephrine 1:10,000 into the syringe and mix gently. This results in 10 mL of solution with a total of 0.1 mg epinephrine (0.1 mg / 10 mL = 10 mcg/mL). A 1 mL bolus then delivers 10 micrograms, which is the typical push-dose dose used to augment perfusion during ROSC. Why the other approaches aren’t appropriate: using a higher-concentration stock (such as 1:1000) would yield a much stronger dose per milliliter, increasing the risk of tachyarrhythmias and hypertension. Diluting with too much or too little saline changes the final concentration and the amount delivered in a standard bolus, making dosing inconsistent. Mixing vigorously isn’t necessary and can introduce foaming or air; gentle mixing ensures a uniform solution without those issues.

The test is checking how to prepare a safe, effective push-dose epinephrine dose for ROSC by creating a dilute solution that delivers a precise microdose. The goal is to have a 10 mL syringe containing epinephrine 1:10,000 diluted with normal saline so that each milliliter of the mixture provides about 10 micrograms of epinephrine. The standard way to achieve this is to take a 10 mL flush syringe, eject 1 mL of saline to make space, then withdraw 1 mL of epinephrine 1:10,000 into the syringe and mix gently. This results in 10 mL of solution with a total of 0.1 mg epinephrine (0.1 mg / 10 mL = 10 mcg/mL). A 1 mL bolus then delivers 10 micrograms, which is the typical push-dose dose used to augment perfusion during ROSC.

Why the other approaches aren’t appropriate: using a higher-concentration stock (such as 1:1000) would yield a much stronger dose per milliliter, increasing the risk of tachyarrhythmias and hypertension. Diluting with too much or too little saline changes the final concentration and the amount delivered in a standard bolus, making dosing inconsistent. Mixing vigorously isn’t necessary and can introduce foaming or air; gentle mixing ensures a uniform solution without those issues.