DHA Pharmacist Clinical Pharmacology and Therapeutics

Question 1

What is the mechanism of action of metformin, the most commonly prescribed oral antidiabetic in Dubai?

Accepted Answer

Decreases hepatic glucose production and increases insulin sensitivity in peripheral tissues

Answer

Increases insulin secretion from the pancreas

Answer

Blocks glucose absorption in the intestines entirely

Answer

Stimulates glucagon release

Question 2

What are the key drug interactions that DHA pharmacists must screen for with warfarin?

Accepted Answer

NSAIDs (increased bleeding risk), antibiotics (altered INR), vitamin K-rich foods, and CYP enzyme inducers/inhibitors

Answer

Warfarin has no significant interactions

Answer

Only interactions with aspirin

Answer

Only food interactions matter

Question 3

What is the pharmacological difference between ACE inhibitors and ARBs in hypertension management?

Accepted Answer

ACE inhibitors block angiotensin-converting enzyme causing cough as a side effect, while ARBs block the AT1 receptor without causing cough

Answer

They are identical medications

Answer

ARBs are stronger than ACE inhibitors

Answer

ACE inhibitors work faster than ARBs

Question 4

What monitoring parameters should DHA pharmacists recommend for patients on statin therapy?

Accepted Answer

Baseline and periodic liver function tests, lipid profile, creatine kinase if muscle symptoms occur, and blood glucose monitoring

Answer

No monitoring is needed

Answer

Only cholesterol levels

Answer

Only liver function tests

Question 5

What is the role of proton pump inhibitors (PPIs) and what long-term risks should DHA pharmacists counsel about?

Accepted Answer

PPIs reduce gastric acid production; long-term risks include vitamin B12 deficiency, hypomagnesemia, increased fracture risk, and C. difficile infection

Answer

PPIs have no long-term risks

Answer

PPIs only work for two weeks

Answer

Long-term PPI use is always safe

Question 6

What is the first-line treatment approach for community-acquired pneumonia according to UAE clinical guidelines?

Accepted Answer

Amoxicillin or macrolide (azithromycin/clarithromycin) for mild cases, with respiratory fluoroquinolone or beta-lactam plus macrolide for moderate cases

Answer

IV vancomycin for all cases

Answer

Only antiviral medications

Answer

No antibiotics until culture results are available