Final answer:
Ketorolac nasal spray should be primed 5 times before initial use to ensure proper dosing.
Step-by-step explanation:
The question pertains to the proper preparation of the Ketorolac nasal spray before its first use. To ensure the Ketorolac nasal spray delivers the correct dose, it must be primed before use. Priming typically involves spraying the product into the air until a fine mist is observed. For Ketorolac nasal spray, it needs to be primed 5 times before initial usage. After being primed, the spray is ready for administering the medication into the nasal passages as prescribed.