During an arrest with a nonshockable rhythm, how often should epinephrine be administered?

During an arrest with a nonshockable rhythm, how often should epinephrine be administered?

• A. Every 1 minute.
• B. Every 8-10 minutes.
• C. Only if ROSC fails.
• D. Every 3-5 minutes.

Answer: (D)

During CPR for nonshockable rhythms, the goal is to maintain perfusion to the heart and brain, and epinephrine helps achieve that by increasing vascular tone and, consequently, coronary and cerebral perfusion pressure. The recommended approach is 1 mg of epinephrine given IV or IO as soon as CPR starts and then repeated every 3 to 5 minutes during ongoing CPR until the patient achieves ROSC or resuscitation efforts stop. This 3–5 minute interval aligns with the cadence of CPR cycles and ensures vasopressor effects are refreshed to support circulation. The other intervals don’t fit clinical guidelines: dosing every 1 minute is more frequent than the standard cycle; waiting 8–10 minutes delays vasopressor support; and giving epinephrine only if ROSC fails overlooks the need for vasopressor support throughout ongoing CPR.

During CPR for nonshockable rhythms, the goal is to maintain perfusion to the heart and brain, and epinephrine helps achieve that by increasing vascular tone and, consequently, coronary and cerebral perfusion pressure. The recommended approach is 1 mg of epinephrine given IV or IO as soon as CPR starts and then repeated every 3 to 5 minutes during ongoing CPR until the patient achieves ROSC or resuscitation efforts stop. This 3–5 minute interval aligns with the cadence of CPR cycles and ensures vasopressor effects are refreshed to support circulation. The other intervals don’t fit clinical guidelines: dosing every 1 minute is more frequent than the standard cycle; waiting 8–10 minutes delays vasopressor support; and giving epinephrine only if ROSC fails overlooks the need for vasopressor support throughout ongoing CPR.