A healthcare provider suspects anaphylaxis when caring for a client following the initial administration of an oral antibiotic. Which of the following should be the healthcare provider's priority intervention?
Correct Answer: B
Rationale: The correct answer is B: Count the respiratory rate. This is the priority intervention because anaphylaxis can lead to severe respiratory distress due to airway swelling or bronchoconstriction. Counting the respiratory rate helps to quickly assess the client's breathing status and detect any signs of respiratory distress. Inserting an IV line (choice A) may be necessary for administering medications, but assessing the respiratory rate takes precedence. Administering oxygen (choice C) is important but should follow assessing the respiratory rate. Preparing equipment for intubation (choice D) is a later intervention if respiratory distress worsens.