A Client Asks the Nurse to Explain the Purpose of an Unna

A client asks the nurse to explain the purpose of an Unna boot. What response by the nurse is best?

A) "It is a compression boot that helps heal diabetic foot ulcers."
B) "They are elastic stocking that squeeze your calves rhythmically."
C) "They help prevent itching and will dry out some of those wounds."
D) "These will protect your lower legs from further injury."