This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
[{'content': 'Therapeutic drug monitoring is used in ? \nSelect and explain. \nA. Diuretic, B. Metformin, C. Levodopa, D. Digoxin', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Digoxin Therapeutic drug monitoring is paicularly useful in following situations ? 1. Drugs with low safety margin ? Digoxin Aminoglycoside antibiotics Anticonvulsants Lithium Antiarrythmics Tricyclic antidepressants Theophylline 2. If individual variations are large - Antidepressants, Lithium 3. Potentially toxic drugs used in presence of renal failure - Aminoglycoside antibiotic, vancomycin, cyclosporine 4. In case of poisoning 5. In case of failure of response without any apparent reason - Antimicrobials 6. To check patient compliance -. Psycho-pharmacological agents. Drugs whose response is easily measurable eg. hypoglycaemics (metformin), antihypeensive, diuretics, oral anticoagulants and general anaesthetics, monitoring of plasma conc. is of no value.", 'role': 'assistant'}]