Paper II
2022 July (Supplementary) (2019 Scheme) · 100 marks · 180 min

Question

Enumerate drugs used in Peptic ulcer. Add a note on Prokinetic agents. (4+4)

Q48 marksShort Essays

Answer

Drugs used in peptic ulcer

GroupExamples
Proton pump inhibitorsOmeprazole, Pantoprazole
H2 receptor antagonistsRanitidine, Famotidine
AntacidsAluminium hydroxide, Magnesium trisilicate
Mucosal protective agentsSucralfate, Misoprostol

Note on prokinetic agents Prokinetics increase gastrointestinal motility and accelerate gastric emptying, useful in GERD, gastroparesis, and functional dyspepsia rather than peptic ulcer directly. Metoclopramide — D2 antagonist with additional 5-HT4 agonist prokinetic action, increases lower esophageal sphincter tone and gastric emptying; adverse effects include extrapyramidal symptoms (crosses the blood-brain barrier). Domperidone — D2 antagonist with similar prokinetic action but minimal CNS penetration, giving a much lower extrapyramidal risk. Mechanism common to both: enhanced acetylcholine release from myenteric neurons via D2 receptor blockade (dopamine normally inhibits ACh release), coordinating antral-duodenal motility.

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