NU 578 EXAM /ACTUAL NU 578 EXAM 3 LATEST 2026/2027 UNIVERSITY OF SOUTH
ALABAMA PRACTICE QUESTIONS AND A NEW UPDATED STUDY GUIDE COMPLETE
ACCURATE EXAM REAL QUESTIONS WITH WELL ELABORATED ANSWERS AND
RATIONALES (100% CORRECT VERIFIED SOLUTIONS) NEWEST UPDATED VERSION
2026 EDITION |GUARANTEED PASS A+ (BRAND NEW!) FULL REVISED NU 578
APPROVED EXAM 3 |GUARANTEED PASS A+ |JUST RELEASED
Question 1
In the treatment of allergic rhinitis, which of the following should be limited to no
more than 5 consecutive days of use?
A. Antihistamines
B. Oral adrenergics
C. Topical vasoconstrictors
D. Topical glucocorticoids
E. Nasal sprays containing normal saline
Correct Answer: C. Topical vasoconstrictors
Rationale: Topical nasal vasoconstrictors (e.g., oxymetazoline) provide rapid relief
of nasal congestion but can cause rebound congestion (rhinitis medicamentosa) if
used longer than 3–5 days. This rebound effect worsens symptoms upon
discontinuation. Antihistamines and topical steroids can be used longer safely.
Saline sprays help moisturize without risk of rebound .
Question 2
The patient must be informed of possible damage to the lungs when prescribed oral
therapy with which of the following drugs?
,A. Amiodarone (Cordarone)
B. Dofetilide (Tikosyn)
C. Propafenone (Rhythmol)
D. Sotalol (Betapace)
Correct Answer: A. Amiodarone (Cordarone)
Rationale: Amiodarone is known to cause pulmonary toxicity, including
pulmonary fibrosis, which can be fatal. Patients on this medication should be
monitored for signs of lung damage such as dyspnea and non-productive cough.
The other antiarrhythmics listed do not have this specific, severe pulmonary side
effect profile .
Question 3
A patient on aspirin and clopidogrel therapy after a recent stent placement reports
black, tarry stools and epigastric pain. The addition of which medication is most
appropriate to reduce the risk of this complication in the future?
A. H2 receptor antagonist
B. Proton pump inhibitor (PPI)
C. Antacid
D. Sucralfate
Correct Answer: B. Proton pump inhibitor (PPI)
,Rationale: Aspirin combined with P2Y12 inhibitors (e.g., clopidogrel) significantly
increases the risk of gastrointestinal bleeding due to additive effects on platelet
inhibition and mucosal irritation. A PPI is recommended for gastrointestinal
prophylaxis in patients on dual antiplatelet therapy who are at high risk for
bleeding .
Question 4
Calcium channel blockers that are dihydropyridines:
A. Work primarily on the SA node
B. Include Verapamil and Diltiazem
C. Interact strongly with grapefruit juice
D. Are often combined with a beta blocker to suppress reflex tachycardia
Correct Answer: D. Are often combined with a beta blocker to suppress reflex
tachycardia
Rationale: Dihydropyridine calcium channel blockers (e.g., nifedipine, amlodipine)
primarily cause vasodilation and can induce reflex tachycardia; combining them
with beta blockers blunts this reflex. Verapamil and diltiazem are non-
dihydropyridines acting on cardiac conduction. Grapefruit juice interacts strongly
mainly with non-dihydropyridines .
Question 5
Which of the following is a true statement regarding over-the-counter cough and
cold preparations?
, A. Dextromethorphan has not been shown to be effective in suppressing cough
associated with the common cold.
B. Guaifenesin acts by promoting a more vigorous cough.
C. Oral sympathomimetics can cause rebound congestion after a few days.
D. Antihistamines reduce itching, sneezing and congestion.
Correct Answer: B. Guaifenesin acts by promoting a more vigorous cough.
Rationale: Guaifenesin is an expectorant that thins bronchial secretions, making
coughs more productive. Dextromethorphan can be effective for cough
suppression, while antihistamines primarily reduce itching and sneezing but have
limited effect on congestion. Rebound congestion is caused by topical nasal
decongestants, not oral sympathomimetics .
Question 6
A patient has inadvertently overdosed on warfarin. To reverse the bleeding caused
by this drug, the patient will be treated with:
A. Vitamin K
B. Ascorbic acid
C. Folic acid
D. Cyanocobalamin
Correct Answer: A. Vitamin K
ALABAMA PRACTICE QUESTIONS AND A NEW UPDATED STUDY GUIDE COMPLETE
ACCURATE EXAM REAL QUESTIONS WITH WELL ELABORATED ANSWERS AND
RATIONALES (100% CORRECT VERIFIED SOLUTIONS) NEWEST UPDATED VERSION
2026 EDITION |GUARANTEED PASS A+ (BRAND NEW!) FULL REVISED NU 578
APPROVED EXAM 3 |GUARANTEED PASS A+ |JUST RELEASED
Question 1
In the treatment of allergic rhinitis, which of the following should be limited to no
more than 5 consecutive days of use?
A. Antihistamines
B. Oral adrenergics
C. Topical vasoconstrictors
D. Topical glucocorticoids
E. Nasal sprays containing normal saline
Correct Answer: C. Topical vasoconstrictors
Rationale: Topical nasal vasoconstrictors (e.g., oxymetazoline) provide rapid relief
of nasal congestion but can cause rebound congestion (rhinitis medicamentosa) if
used longer than 3–5 days. This rebound effect worsens symptoms upon
discontinuation. Antihistamines and topical steroids can be used longer safely.
Saline sprays help moisturize without risk of rebound .
Question 2
The patient must be informed of possible damage to the lungs when prescribed oral
therapy with which of the following drugs?
,A. Amiodarone (Cordarone)
B. Dofetilide (Tikosyn)
C. Propafenone (Rhythmol)
D. Sotalol (Betapace)
Correct Answer: A. Amiodarone (Cordarone)
Rationale: Amiodarone is known to cause pulmonary toxicity, including
pulmonary fibrosis, which can be fatal. Patients on this medication should be
monitored for signs of lung damage such as dyspnea and non-productive cough.
The other antiarrhythmics listed do not have this specific, severe pulmonary side
effect profile .
Question 3
A patient on aspirin and clopidogrel therapy after a recent stent placement reports
black, tarry stools and epigastric pain. The addition of which medication is most
appropriate to reduce the risk of this complication in the future?
A. H2 receptor antagonist
B. Proton pump inhibitor (PPI)
C. Antacid
D. Sucralfate
Correct Answer: B. Proton pump inhibitor (PPI)
,Rationale: Aspirin combined with P2Y12 inhibitors (e.g., clopidogrel) significantly
increases the risk of gastrointestinal bleeding due to additive effects on platelet
inhibition and mucosal irritation. A PPI is recommended for gastrointestinal
prophylaxis in patients on dual antiplatelet therapy who are at high risk for
bleeding .
Question 4
Calcium channel blockers that are dihydropyridines:
A. Work primarily on the SA node
B. Include Verapamil and Diltiazem
C. Interact strongly with grapefruit juice
D. Are often combined with a beta blocker to suppress reflex tachycardia
Correct Answer: D. Are often combined with a beta blocker to suppress reflex
tachycardia
Rationale: Dihydropyridine calcium channel blockers (e.g., nifedipine, amlodipine)
primarily cause vasodilation and can induce reflex tachycardia; combining them
with beta blockers blunts this reflex. Verapamil and diltiazem are non-
dihydropyridines acting on cardiac conduction. Grapefruit juice interacts strongly
mainly with non-dihydropyridines .
Question 5
Which of the following is a true statement regarding over-the-counter cough and
cold preparations?
, A. Dextromethorphan has not been shown to be effective in suppressing cough
associated with the common cold.
B. Guaifenesin acts by promoting a more vigorous cough.
C. Oral sympathomimetics can cause rebound congestion after a few days.
D. Antihistamines reduce itching, sneezing and congestion.
Correct Answer: B. Guaifenesin acts by promoting a more vigorous cough.
Rationale: Guaifenesin is an expectorant that thins bronchial secretions, making
coughs more productive. Dextromethorphan can be effective for cough
suppression, while antihistamines primarily reduce itching and sneezing but have
limited effect on congestion. Rebound congestion is caused by topical nasal
decongestants, not oral sympathomimetics .
Question 6
A patient has inadvertently overdosed on warfarin. To reverse the bleeding caused
by this drug, the patient will be treated with:
A. Vitamin K
B. Ascorbic acid
C. Folic acid
D. Cyanocobalamin
Correct Answer: A. Vitamin K
