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Pharmacology: Antibiotics
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Pharmacology: Antibiotics
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25 Questions

1. The most important mechanism by which gram negative bacilli acquire chloramphenicol resistance is
2. Addition of clavulanic acid to amoxicillin is to
3. Drug of choice for ringworm infection is
4. Benzylpenicillin is not used orally because
5. Chloramphenicol is more active than tetracyclines against
6. ‘Red man syndrome’ has been associated with rapid intravenous injection of the following antibiotic
7. Pseudomonas aeruginosa organism is always sensitive to
8. Which one of the following antibiotics is likely to be most effective agent in the treatment of an infection due to enterococci if used in conjuction with penicillin G?
9. If a patient gives history of urticaria, itching and swelling of lips following injection of penicillin G, then
10. All of the following factors may increase the risk of nephrotoxicity from gentamicin therapy except
11. The most suitable tetracycline for use in a patient with impaired renal function is
12. The following antibiotic is a first line drug for treatment of Mycobacterium avium complex infection in AIDS patients
13. Probenacid increases the plasma concentration of penicillin because
14. Beta – lactamase production by strains of Haemophilus influenzae, Moraxella catarrhalis, and Neissera gonorrhoeae confers resistance against penicillin G. which one of the following antibiotics is most likely to be effective against all strains of each of the above organisms?
15. Gram negative organisms are largely insensitive to benzyl penicillin because
16. Which one of the following drugs is most likely to be effective against multidrug – resistant strains of M tuberculosis, including those resistant to streptomycin?
17. In a patient with culture-positive enterococcal endocarditis who has failed to respond to vancomycin because of resistance, the treatment most likely to be effective is
18. Select the most potent tetracycline antibiotic
19. Drug which interfere with the bacterial cell wall synthesis is
20. Aminoglycoside antibiotics have the following common property
21. Which out of the following antibiotics penetrates blood-CSF barrier the best
22. Cloxacillin is indicated in infections caused by the following organism(s)
23. Compared to older tetracyclines, doxycycline produces a lower incidence of superinfection diarrhoea because
24. What is break point concentration of an antibiotic ?
25. Tetracyclines are still the first choice drugs for the following disease.