A nurse is assessing a client who is receiving IV vancomycin. The nurse notes a flushing of the neck and tachycardia. Which of the following actions should the nurse take?

Choice A rationale The signs described (flushing of the neck and tachycardia) are classic symptoms of Red Man Syndrome, a common, non-IgE-mediated reaction related to the rate of vancomycin infusion. This histamine-release reaction is managed by slowing the infusion rate to allow for gradual drug distribution and by administering antihistamines. Choice B rationale Anaphylaxis is a severe, IgE-mediated allergic reaction involving systemic effects such as bronchospasm, laryngeal edema, and profound hypotension, which can occur with vancomycin. The described symptoms are more characteristic of Red Man Syndrome, which is rate-dependent and not a true anaphylactic emergency. Choice C rationale Changing the IV infusion site would not address the systemic reaction (Red Man Syndrome) caused by the rapid infusion of the medication. The reaction is related to the drug's presence and rate in the bloodstream, not to a localized issue at the venipuncture site. Choice D rationale Applying cold compresses would offer minimal symptomatic relief for the flushing and would not address the underlying systemic histamine release causing the tachycardia and flushing. Slowing the infusion is the priority intervention to manage this rate-related adverse effect.