Drug therapy monitoring – medication chart review and interventions is a core skill for B.Pharm students, blending pharmacology, clinical judgment, and patient safety. This topic covers therapeutic drug monitoring, medication chart review, detection of adverse drug reactions, drug interactions, renal and hepatic dose adjustments, monitoring parameters, laboratory interpretation, documentation, and clinical interventions. Understanding how to identify prescribing errors, optimize dosages, interpret trough and peak levels, and communicate recommendations improves pharmacotherapy outcomes and reduces harm. Practical knowledge of high-risk drugs (eg, aminoglycosides, vancomycin, lithium, warfarin) and monitoring protocols is essential for effective medication management. Now let’s test your knowledge with 30 MCQs on this topic.
Q1. What is the primary goal of a medication chart review during hospital admission?
- To record patient allergies only
- To detect prescribing errors, ensure appropriate monitoring, and reconcile medications
- To prepare discharge prescriptions
- To educate nurses about drug administration
Correct Answer: To detect prescribing errors, ensure appropriate monitoring, and reconcile medications
Q2. Therapeutic drug monitoring (TDM) is primarily used to:
- Detect counterfeit medications
- Maintain plasma drug concentration within a therapeutic range to maximize efficacy and minimize toxicity
- Replace clinical assessment of effectiveness
- Measure drug purity
Correct Answer: Maintain plasma drug concentration within a therapeutic range to maximize efficacy and minimize toxicity
Q3. When should a trough level be drawn for once-daily aminoglycoside therapy?
- 30 minutes after infusion
- Immediately before the next dose
- At the midpoint between doses
- Any time during the day
Correct Answer: Immediately before the next dose
Q4. For vancomycin monitoring, the trough concentration is best obtained:
- One hour after infusion start
- At steady state, just before the next dose
- Immediately after infusion
- Midway between doses
Correct Answer: At steady state, just before the next dose
Q5. Which medication requires routine INR monitoring?
- Apixaban
- Heparin
- Warfarin
- Clopidogrel
Correct Answer: Warfarin
Q6. Which laboratory parameter is most important to check before initiating metformin?
- Platelet count
- Serum creatinine or eGFR
- Serum bilirubin
- TSH level
Correct Answer: Serum creatinine or eGFR
Q7. Dose adjustment in renal impairment is most commonly based on which measurement?
- Body mass index (BMI)
- Creatinine clearance or estimated glomerular filtration rate (eGFR)
- Serum sodium
- Serum albumin
Correct Answer: Creatinine clearance or estimated glomerular filtration rate (eGFR)
Q8. Therapeutic monitoring of lithium should include which parameter?
- Serum lithium concentration
- Prothrombin time
- Serum amylase
- Urine dipstick for glucose
Correct Answer: Serum lithium concentration
Q9. The immediate pharmacist intervention when a serious adverse drug reaction is suspected should be to:
- Ignore and monitor
- Stop or withhold the suspected drug and notify the prescriber while documenting the event
- Double the dose of all other medications
- Order unrelated laboratory tests
Correct Answer: Stop or withhold the suspected drug and notify the prescriber while documenting the event
Q10. Which tool is commonly used to identify potentially inappropriate medications in older adults?
- Beers Criteria
- Framingham Score
- APGAR
- CHADS2
Correct Answer: Beers Criteria
Q11. Medication reconciliation involves:
- Comparing the patient’s current medication list with new medication orders to identify discrepancies
- Only counting medication doses on a chart
- Prescribing new drugs without review
- Reviewing only over-the-counter supplements
Correct Answer: Comparing the patient’s current medication list with new medication orders to identify discrepancies
Q12. When should a peak aminoglycoside level be drawn after an IV infusion?
- Immediately before infusion
- 30 minutes after completion of a 30–60 minute infusion
- 12 hours after dosing
- Right before sleep
Correct Answer: 30 minutes after completion of a 30–60 minute infusion
Q13. What is the typical therapeutic INR target range for most indications on warfarin?
- 0.5–1.0
- 1.0–1.5
- 2.0–3.0
- 4.0–5.0
Correct Answer: 2.0–3.0
Q14. Combination of an SSRI with which class greatly increases the risk of serotonin syndrome?
- Beta-blockers
- MAO inhibitors
- Statins
- Antacids
Correct Answer: MAO inhibitors
Q15. What is the specific antidote for unfractionated heparin overdose?
- Vitamin K
- Protamine sulfate
- Naloxone
- Flumazenil
Correct Answer: Protamine sulfate
Q16. Which parameters should be monitored after initiating an ACE inhibitor?
- Blood pressure, serum potassium, and serum creatinine
- Blood glucose only
- Complete blood count weekly
- Serum magnesium only
Correct Answer: Blood pressure, serum potassium, and serum creatinine
Q17. Which dietary change can reduce warfarin effectiveness?
- Increased intake of vitamin K-rich foods like spinach and kale
- Increased water intake
- High-protein diet
- Low-sodium diet
Correct Answer: Increased intake of vitamin K-rich foods like spinach and kale
Q18. Hepatic impairment most commonly affects dosing of drugs that:
- Are excreted unchanged in urine
- Undergo high hepatic extraction and extensive first-pass metabolism
- Are inhaled anesthetics only
- Have zero protein binding
Correct Answer: Undergo high hepatic extraction and extensive first-pass metabolism
Q19. A drug with a narrow therapeutic index implies:
- Large safety margin and no monitoring needed
- Small difference between therapeutic and toxic concentrations; often requires TDM
- It is ineffective at normal doses
- It is not absorbed orally
Correct Answer: Small difference between therapeutic and toxic concentrations; often requires TDM
Q20. For complicated MRSA infections, target vancomycin trough concentrations are generally:
- 1–5 mg/L
- 5–10 mg/L
- 15–20 mg/L
- 30–40 mg/L
Correct Answer: 15–20 mg/L
Q21. Proper documentation of a pharmacist intervention should include:
- Only the drug name
- Rationale, action taken, recommendations, and communication to the prescriber
- Patient’s financial details
- Personal opinions without evidence
Correct Answer: Rationale, action taken, recommendations, and communication to the prescriber
Q22. Which antimicrobial commonly requires serum level monitoring to avoid toxicity?
- Amoxicillin
- Vancomycin
- Azithromycin
- Metronidazole
Correct Answer: Vancomycin
Q23. Before initiating statin therapy, which baseline laboratory test is recommended?
- Serum creatinine kinase only
- Fasting lipid profile and baseline liver function tests (ALT/AST)
- Urine culture
- Coagulation profile
Correct Answer: Fasting lipid profile and baseline liver function tests (ALT/AST)
Q24. In elderly patients with reduced renal function, the safest dosing intervention is usually to:
- Increase the dose to overcome resistance
- Reduce dose or extend dosing interval based on renal function
- Stop all medications immediately
- Switch to herbal therapies
Correct Answer: Reduce dose or extend dosing interval based on renal function
Q25. When a potential major drug–drug interaction is identified on a medication chart, the best pharmacist action is to:
- Document it and take no further action
- Consult interaction resources, assess clinical significance, and discuss alternatives with the prescriber
- Discontinue both drugs without consulting
- Ignore if the patient seems stable
Correct Answer: Consult interaction resources, assess clinical significance, and discuss alternatives with the prescriber
Q26. Monitoring for digoxin toxicity should include:
- Serum digoxin concentration and ECG for arrhythmias
- Serum magnesium only
- Fasting glucose
- Pulmonary function tests
Correct Answer: Serum digoxin concentration and ECG for arrhythmias
Q27. The purpose of measuring a peak drug concentration is to:
- Assess trough-related toxicity
- Evaluate maximum concentration-related efficacy and risk of toxicity
- Replace the need for trough levels
- Check renal function indirectly
Correct Answer: Evaluate maximum concentration-related efficacy and risk of toxicity
Q28. Best practice timing for initial medication reconciliation is:
- At hospital admission, ideally within 24 hours
- Only at discharge
- One month after admission
- When the patient requests it
Correct Answer: At hospital admission, ideally within 24 hours
Q29. What is an essential communication step after making a medication intervention?
- Delete the original order silently
- Inform the prescriber and document the recommendation and outcome in the patient’s chart
- Only tell the nursing staff verbally
- Wait until discharge to report
Correct Answer: Inform the prescriber and document the recommendation and outcome in the patient’s chart
Q30. Which action most effectively reduces medication errors during transitions of care?
- Performing thorough medication reconciliation and communicating changes to the receiving team
- Delaying handover until the next day
- Relying solely on patient memory
- Removing all high-risk medications by default
Correct Answer: Performing thorough medication reconciliation and communicating changes to the receiving team
