Acetaminophen reduces fever by
1. directly acting on the hypothalamus.
2. inhibiting prostaglandins.
3. blocking impulses to the brain.
4. affecting nerve fibers.
1
Rationale 1: Acetaminophen (Tylenol) directly acts on the fever center of the hypothalamus and dilates peripheral blood vessels.
Rationale 2: Anti-inflammatory drugs such as ibuprofen (Advil) inhibit prostaglandins.
Rationale 3: Blocking impulses to the brain is not a mechanism of action of drugs for inflammation and fever.
Rationale 4: Acetaminophen dilates blood vessels, not nerve fibers.
Global Rationale: Acetaminophen (Tylenol) directly acts on the fever center of the hypothalamus and dilates peripheral blood vessels. Anti-inflammatory drugs such as ibuprofen (Advil) inhibit prostaglandins. Blocking impulses to the brain is not a mechanism of action of drugs for inflammation and fever. Acetaminophen dilates blood vessels, not nerve fibers.
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