A client is rushed to the emergency department for anaphylac…

A client is rushed to the emergency department for anaphylactic reaction of unknown origin. The client is alert with bilateral expiratory wheezing. O2 saturation is 90% on room air. The client is place on oxygen, an albuterol treatment is being administered by nebulizer. The nurse prepares to administer epinephrine. Which concentration and route should the nurse utilize?