All Free Nursing Pharmacology MCQs with Answers
Every Nursing Pharmacology question in the bank, across all chapters, each with the correct answer and a written explanation. Free and unlimited, with no account needed.
450 questions · page 8 of 23
- A. Irreversibly inhibits platelet cyclooxygenase
- B. Directly dissolves an established blood clot
- C. Replaces clotting factors consumed during bleeding
- D. Prevents fibrin breakdown in a damaged vessel
Explanation: Aspirin irreversibly inhibits platelet cyclooxygenase, reducing thromboxane A2 and platelet aggregation for the life of the platelet.
Correct answer: Irreversibly inhibits platelet cyclooxygenase- A. Rebound hypertension and severe headache
- B. Gradual hypoglycaemia and sweating
- C. Permanent hearing loss and tinnitus
- D. Immediate fluid loss and dehydration
Explanation: Abrupt withdrawal of clonidine can cause sympathetic overactivity, producing rebound hypertension, headache and agitation.
Correct answer: Rebound hypertension and severe headache- A. Slows conduction through the atrioventricular node
- B. Increases conduction through the atrioventricular node
- C. Stimulates the kidneys to excrete uric acid
- D. Increases platelet production in bone marrow
Explanation: Diltiazem is a nondihydropyridine calcium channel blocker that slows atrioventricular nodal conduction and can reduce the ventricular…
Correct answer: Slows conduction through the atrioventricular node- A. I use it regularly, not for sudden severe breathlessness
- B. I use it only after an acute attack has already started
- C. I stop it whenever my breathing feels normal for one day
- D. I swallow the capsule so the medicine works throughout my body
Explanation: Tiotropium is a long-acting inhaled anticholinergic used for maintenance control and is not a rapid rescue medicine.
Correct answer: I use it regularly, not for sudden severe breathlessness- A. Report the symptoms for prompt assessment
- B. Tell the patient to double the next dose
- C. Advise stopping prednisone immediately
- D. Reassure the patient that infection is impossible
Explanation: Long-term corticosteroids suppress immune responses and may increase infection risk while masking typical signs.
Correct answer: Report the symptoms for prompt assessment- A. It breaks down mucus and makes secretions easier to clear
- B. It suppresses the cough reflex and dries respiratory secretions
- C. It relaxes bronchial smooth muscle for immediate relief
- D. It reduces airway inflammation by replacing corticosteroids
Explanation: Acetylcysteine is a mucolytic that breaks disulfide bonds in mucus, reducing its viscosity and helping the patient expectorate.
Correct answer: It breaks down mucus and makes secretions easier to clear- A. It reduces airway inflammation but is not a rapid rescue bronchodilator
- B. It works by increasing mucus thickness during an attack
- C. It prevents oxygen from entering the alveoli during wheezing
- D. It acts only by lowering the patient's blood pressure
Explanation: Corticosteroids reduce airway inflammation and help control exacerbations, but they do not rapidly relax bronchial smooth muscle.
Correct answer: It reduces airway inflammation but is not a rapid rescue bronchodilator- A. Accumulation of bradykinin in the airways
- B. Excess fluid in the pulmonary alveoli
- C. Reduced potassium in the bloodstream
- D. Increased mucus production in the bronchi
Explanation: ACE inhibitors such as enalapril can cause a persistent dry cough by reducing bradykinin breakdown.
Correct answer: Accumulation of bradykinin in the airways- A. It is a common peripheral vasodilator effect
- B. It shows severe kidney failure from the drug
- C. It indicates an immediate allergic reaction
- D. It results from dangerously low blood glucose
Explanation: Amlodipine relaxes arteriolar smooth muscle and may cause peripheral ankle oedema because of increased capillary fluid movement.
Correct answer: It is a common peripheral vasodilator effect- A. It directly inhibits factor Xa
- B. It activates antithrombin to inhibit thrombin
- C. It blocks platelet cyclooxygenase
- D. It prevents vitamin K absorption
Explanation: Apixaban directly inhibits factor Xa, reducing thrombin generation and clot formation.
Correct answer: It directly inhibits factor Xa- A. 1 tablet
- B. 2 tablets
- C. 3 tablets
- D. 4 tablets
Explanation: Use the formula: prescribed dose divided by dose per tablet. 500 mg ÷ 250 mg = 2 tablets.
Correct answer: 2 tablets- A. 10 mL
- B. 12 mL
- C. 15 mL
- D. 20 mL
Explanation: First calculate the volume per milligram: 375 mg × 5 mL ÷ 125 mg = 15 mL.
Correct answer: 15 mL- A. 75 mg
- B. 250 mg
- C. 750 mg
- D. 7,500 mg
Explanation: One gram equals 1,000 milligrams. Therefore, 0.75 g × 1,000 = 750 mg. The decimal must be moved three places to the right when converting…
Correct answer: 750 mg- A. 5.5 mL
- B. 7.5 mL
- C. 10 mL
- D. 15 mL
Explanation: Calculate the dose first: 15 kg × 10 mg/kg = 150 mg. Then calculate the volume: 150 mg × 5 mL ÷ 100 mg = 7.5 mL.
Correct answer: 7.5 mL- A. 24 drops/min
- B. 31 drops/min
- C. 38 drops/min
- D. 45 drops/min
Explanation: Use: volume × drop factor ÷ time in minutes. 1,000 × 15 ÷ 480 minutes = 31.25 drops/minute, which is rounded to 31 drops/minute.
Correct answer: 31 drops/min- A. 100 mL/hour
- B. 125 mL/hour
- C. 150 mL/hour
- D. 200 mL/hour
Explanation: Use the formula: total volume divided by infusion time. 500 mL ÷ 4 hours = 125 mL/hour.
Correct answer: 125 mL/hour- A. 2 mg/mL
- B. 10 mg/mL
- C. 20 mg/mL
- D. 200 mg/mL
Explanation: A 2% w/v solution contains 2 g in 100 mL. Converting 2 g to 2,000 mg and dividing by 100 mL gives 20 mg/mL.
Correct answer: 20 mg/mL- A. 0.5 mg
- B. 5 mg
- C. 50 mg
- D. 500 mg
Explanation: One gram equals 1,000 mg, so 1 g in 1,000 mL equals 1 mg/mL. In 5 mL, the amount is 5 mL × 1 mg/mL = 5 mg.
Correct answer: 5 mg- A. 0.25 mL
- B. 0.5 mL
- C. 1 mL
- D. 2 mL
Explanation: Use: prescribed dose divided by concentration. 0.25 mg ÷ 0.5 mg/mL = 0.5 mL.
Correct answer: 0.5 mL- A. 2 hours
- B. 4 hours
- C. 5 hours
- D. 10 hours
Explanation: Use: total volume divided by infusion rate. 250 mL ÷ 50 mL/hour = 5 hours.
Correct answer: 5 hours