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Chapter 60. Musculoskeletal Disorders

Student Questions

The counterirritant that produces an effect through a cooling sensation is:

A. Camphor

B. Capsaicin

C. Methyl salicylate

D. Methyl nicotinate

Answer: A

Option A: Correct. The Group B counterirritants, camphor and menthol, exert their effect through a cooling sensation.

Option B: Incorrect. Capsaicin is a Group D counterirritant that exerts its effect by irritating without redness.

Option C: Incorrect. Methyl salicylate is a Group A counterirritant, also known as a rubefacient, which exerts its effect by producing redness.

Option D: Incorrect. Methyl nicotinate is a Group C counterirritant that exerts its effect by causing vasodilation.

A patient presents with an ankle injury from a game of tennis. Mild swelling is apparent, and the patient prefers an oral analgesic over a topical product. The patient has no known allergies or medical problems. Which of the following is the best choice for systemic analgesia for this patient?

A. Aspirin

B. Acetaminophen

C. Naproxen

D. Tramadol

Answer: C

Option A: Incorrect. Aspirin is not more effective than acetaminophen and is not recommended because its adverse effects may be more common and more severe.

Option B: Incorrect. While acetaminophen is the drug of choice for mild-to-moderate regional musculoskeletal pain without inflammation, this patient is experiencing inflammation.

Option C: Correct. Naproxen is an NSAID, which is a preferred choice for musculoskeletal disorders with inflammation.

Option D: Incorrect. Tramadol is an opioid analgesic. Opioid analgesics should be reserved for moderate-to-severe pain.

Which one of the following instructions should be included in an education plan for a patient using a counterirritant that contains menthol?

A. A burning sensation upon application will subside with regular use.

B. You must use this regularly for 1 to 2 weeks before the onset of effect.

C. After application, wrap the affected area tightly with a bandage.

D. Do not use with a heating pad.

Answer: D

Option A: Incorrect. Menthol produces a cooling sensation. The cooling sensation may be followed by a sensation of warmth, but this effect does not change with continued use.


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