What is the generic name of Macrobid?
Niacin
Cephamycin
Cetirizine
Nitrofurantoin
The Correct Answer is D
A. Niacin is the generic name for nicotinic acid or vitamin B3, used as an antilipemic agent. It inhibits the peripheral mobilization of free fatty acids to reduce hepatic triglyceride synthesis. It is not the active antimicrobial component of Macrobid.
B. Cephamycin represents a specific subclass of beta-lactam antibiotics, such as cefoxitin, derived from Streptomyces species. These agents possess a methoxy group at the 7-alpha position of the cephem nucleus. This classification does not correspond to the brand Macrobid.
C. Cetirizine is a second-generation H1-receptor antagonist used for the treatment of allergic rhinitis. It works by selectively inhibiting peripheral histamine receptors to reduce inflammatory symptoms. It lacks the antibacterial properties required for the treatment of urinary infections.
D. Nitrofurantoin is the generic name for Macrobid, a nitrofuran antibiotic used for cystitis. It is reduced by bacterial flavoproteins to reactive intermediates that damage ribosomal proteins and DNA. The Macrobid formulation specifically contains both macrocrystals and monohydrate forms.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Advil is the proprietary brand name for ibuprofen, a propionic acid derivative. It functions by non-selectively inhibiting cyclooxygenase 1 and 2 enzymes. It is chemically distinct from the phenylacetic acid derivative requested in the question stem.
B. Voltaren is the brand name for diclofenac sodium, a non-steroidal anti-inflammatory drug. It inhibits prostaglandin synthesis by targeting the cyclooxygenase pathway. This specific brand is commonly available in oral, topical, and ophthalmic formulations for pain management.
C. Naprosyn is the brand name for naproxen, another member of the propionic acid class of non-steroidal anti-inflammatory drugs. It provides analgesic and anti-inflammatory effects through systemic enzyme inhibition. It is not the brand name for diclofenac sodium.
D. Toradol is the brand name for ketorolac tromethamine, a potent heterocyclic acetic acid derivative. It is primarily used for short-term management of moderately severe acute pain. It represents a different chemical entity than the diclofenac molecule specified.
Correct Answer is D
Explanation
A. Hydromorphone HCl does not act directly on the motor end plate or the spinal cord to reduce skeletal muscle tone. It is not classified as a spasmolytic or neuromuscular blocker. Its primary therapeutic indication is not the relief of muscle spasms.
B. This agent does not inhibit cyclooxygenase 1 or 2 enzymes. It lacks the peripheral anti-inflammatory, antipyretic, and antiplatelet properties characteristic of drugs like ibuprofen or aspirin. It does not reduce prostaglandin synthesis at the site of tissue injury.
C. While it may cause sedation as a side effect, it is not indicated for the clinical management of generalized anxiety disorder. It does not modulate gamma-aminobutyric acid receptors in the same manner as benzodiazepines. Its use is strictly regulated.
D. Hydromorphone HCl is a potent mu-opioid receptor agonist within the central nervous system. It alters the perception of and emotional response to pain by inhibiting ascending pain pathways. This mechanism of action defines its classification as an opioid analgesic.
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