Saudi Prometric Pharmacist Clinical Pharmacy and Therapeutics 2

Question 1

A patient with peptic ulcer disease positive for H. pylori is prescribed triple therapy. Which regimen is standard first-line?

Accepted Answer

PPI + clarithromycin + amoxicillin for 14 days

Answer

Standard first-line H. pylori eradication is triple therapy: PPI + clarithromycin + amoxicillin (or metronidazole if penicillin allergy) for 10–14 days. 14 days provides higher eradication rates. Quadruple therapy (with bismuth) is used in areas with high clarithromycin resistance.

Question 2

A pharmacist is reviewing a patient with systolic heart failure (HFrEF). Which four drug classes have mortality benefit in HFrEF?

Accepted Answer

ACE inhibitor/ARB/ARNI + beta-blocker + MRA + SGLT2 inhibitor (now 'fantastic four')

Answer

Evidence-based therapy for HFrEF (EF <40%) with mortality benefit: (1) ACE inhibitor/ARB or ARNI (sacubitril/valsartan), (2) beta-blocker (carvedilol/bisoprolol/metoprolol succinate), (3) mineralocorticoid receptor antagonist (spironolactone/eplerenone), (4) SGLT2 inhibitor (dapagliflozin/empagliflozin). Loop diuretics reduce symptoms but not mortality.

Question 3

A patient with COPD is on a long-acting beta-2 agonist (LABA). Which combination is recommended to further reduce exacerbations in severe COPD?

Accepted Answer

LABA + long-acting muscarinic antagonist (LAMA) combination inhaler

Answer

For moderate-severe COPD, LABA + LAMA dual bronchodilation is the cornerstone of maintenance therapy, providing superior bronchodilation and exacerbation reduction compared to either alone. ICS is added (triple therapy: ICS/LABA/LAMA) in patients with frequent exacerbations or eosinophilia.

Question 4

A 70-year-old patient is on warfarin (INR 2.5) and develops a significant GI bleed. What is the most rapid reversal option?

Accepted Answer

4-factor prothrombin complex concentrate (PCC) plus IV vitamin K

Answer

For life-threatening warfarin-related bleeding, 4-factor PCC (contains factors II, VII, IX, X, and proteins C and S) provides rapid (minutes) INR reversal and is preferred over FFP (which requires large volumes and 30–60 min). IV vitamin K ensures sustained reversal after PCC.

Question 5

A patient is prescribed lithium for bipolar disorder. Which drug interaction can precipitously raise lithium levels and cause toxicity?

Accepted Answer

NSAIDs and thiazide diuretics — reduce renal lithium excretion

Answer

NSAIDs reduce renal prostaglandin synthesis, causing sodium retention and reduced renal lithium excretion. Thiazide diuretics cause sodium depletion; the kidney compensates by reabsorbing more sodium (and lithium together) in the proximal tubule. Both dramatically raise lithium levels.

Saudi Prometric Pharmacist Practice Test

Saudi Prometric Pharmacist Practice Test

Saudi Prometric Pharmacist Clinical Pharmacy and Therapeutics 2