Paper II — 2014 September (Supplementary) (2010 Scheme) — Q2
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Paper II
2014 September (Supplementary) (2010 Scheme) · 40 marks · 120 min
Question
Read the case history and answer the following questions. Mr. Raman 32 years has
developed severe epigastric pain after taking tab. Ibuprofen 400mg tds for his joint pain
(a) Mention two drugs used in NSAID induced gastric ulceration
(b) Mechanism of action of proton pump inhibitors
(c) Drugs for eradication of H.pylori infection
Q26 marksEssays
Answer
(a) Drugs used in NSAID-induced gastric ulceration
Misoprostol (PGE1 analogue — prevention and treatment)
Omeprazole (proton pump inhibitor)
(b) Mechanism of action of proton pump inhibitors
Prodrugs activated in the acidic parietal cell canaliculus
Irreversibly inhibit the H⁺/K⁺-ATPase (proton pump) on the parietal cell luminal membrane — the final common step of gastric acid secretion, producing profound and long-lasting suppression of both basal and stimulated acid output
(c) Drugs for H. pylori eradication
Standard triple therapy: PPI (e.g., Omeprazole) + Amoxicillin + Clarithromycin (7–14 days)
Alternative (penicillin allergy): PPI + Clarithromycin + Metronidazole