Flashcard 11 - Basic Care and Comfort Flashcard Set for the NCLEX-PN Exam
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Apply heat or cold for a maximum of 15 to 20 minutes at a time to prevent the rebound phenomenon.
Explanation:
Prolonged exposure beyond 20 minutes triggers the rebound phenomenon (where heat eventually causes secondary vasoconstriction and cold causes secondary vasodilation). This opposite physiological reaction increases the risk of tissue ischemia, burns, or frostbite.
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