NUR 209 Exam 2 Medical Surgical Nursing II
Fortis 2026/2027 Test Bank with Verified
Answers and Detailed Rationales Grade A
1. What is the classification of Trimethoprim-Sulfamethoxazole
(Bactrim)?
Correct Answer: Sulfonamide anti-bacterial
Rationale:
1. Trimethoprim-sulfamethoxazole is a combination sulfonamide antibiotic.
2. Sulfonamides inhibit bacterial folic acid synthesis.
3. This drug is commonly used for urinary tract infections (UTIs).
2. What is the indication for Trimethoprim-Sulfamethoxazole (Bactrim)?
Correct Answer: UTI
Rationale:
1. Bactrim is indicated for uncomplicated urinary tract infections (UTIs).
2. It is also used for Pneumocystis jirovecii pneumonia (PJP) and other infections.
3. Culture and sensitivity testing should guide use.
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3. What is the mechanism of action (MOA) of
Trimethoprim/Sulfamethoxazole (Bactrim)?
Correct Answer: Inhibits folic acid synthesis → prevents bacterial growth
Rationale:
1. Trimethoprim and sulfamethoxazole block two consecutive steps in bacterial
folic acid synthesis.
2. Bacteria cannot produce folic acid, which is essential for DNA synthesis.
3. This is a bacteriostatic effect.
4. The combination is synergistic.
4. What are the nursing considerations for Trimethoprim-
Sulfamethoxazole (Bactrim)?
Correct Answer: Monitor renal function, Obtain C&S, Educate on
completing whole course, Check for superinfection, Monitor potassium
(hyperkalemia), Monitor rash (Stevens-Johnson syndrome), Encourage
fluids
Rationale:
1. Monitor renal function because the drug is renally excreted and can cause
nephrotoxicity.
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2. Obtain culture and sensitivity (C&S) before starting to ensure appropriate
coverage.
3. Educate on completing the whole course to prevent resistance.
4. Check for superinfection (e.g., oral thrush, C. diff) due to broad-spectrum
effects.
5. Monitor potassium for hyperkalemia, especially in older adults or those on
ACE inhibitors.
6. Monitor for rash; Stevens-Johnson syndrome (SJS) is a rare but life-
threatening reaction.
7. Encourage fluids to prevent crystalluria (sulfonamides can precipitate in
urine).
5. What is the classification of Losartan?
Correct Answer: ARB (angiotensin receptor blocker)
Rationale:
1. ARBs block angiotensin II type 1 receptors.
2. They cause vasodilation and lower blood pressure.
3. Losartan is used for hypertension, heart failure, and diabetic nephropathy.
6. What is the mechanism of action (MOA) of Losartan?