Q- Which of the following beta blockers is appropriate for treating an asthmatic patient?
A- Labetalol
B- Metoprolol
C- Propranolol
D- Timolol
B- Metoprolol- Metoprolol is a cardio-selective beta-1 blocker, meaning it primarily blocks beta-1 receptors in the heart with less effect on beta-2 receptors in the lungs. This makes it safer for asthma patients, as beta-2 blockade can trigger bronchoconstriction. Other drugs are non-selective beta blockers.
Q- Which of the following is the primary mechanism of action of omeprazole?
A- Blocks dopamine D2 receptors
B- Inhibits H+/K+ ATPase in parietal cells
C- Inhibits histamine H1 receptors
D- Neutralizes gastric acid
B- Inhibits H+/K+ ATPase in parietal cells- Omeprazole is a proton pump inhibitor that suppresses gastric acid secretion by irreversibly blocking the H+/K+ ATPase enzyme system.
Q- Which of the following antibiotics is associated with tendon rupture as a side effect?
A- Amoxicillin
B- Azithromycin
C- Ciprofloxacin
D- Doxycycline
C- Ciprofloxacin- Ciprofloxacin, a fluoroquinolone, is linked to tendonitis and tendon rupture, especially in older adults and those on corticosteroids.
