Pharmacology and dental materia medica

Multiple Choice Questions 10 Pages

University of Mumbai

Bachelor of Dental Surgery

OMB

Contributed by

Omar Mitesh Bobal

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BDS SECOND PROFESSIONAL EXAMINATION 2007
PHARMACOLOGY AND DENTAL MATERIA MEDICA (MCQs)
Model Paper

Total No. of MCQs 45
Marks: 45 Time 45 minutes

Topic Specification: General Pharmacology (MCQ 1 – 3)
Reference: Lippincott’s Pharmacology, 3
rd
Ed.

01. The steady-state concentration of a drug can be double by:
a. Doubling the both rate of infusion and concentration of drug.
b. Doubling the rate of infusion only.
c. Doubling the loading dose but maintaining the infusion rate.
d. Tripling the rate of infusion.
e. Duadrupling the rate of infusion.
Key: b

02. Phase II reactions of a drug biotransformation:
a. Decreases its water solubility.
b. Includes activity of cytochrom P-450.
c. Usually leads to inactivation of the drug.
d. Does not include acetylation.
e. Occur at the same rate in adults and the new born.
Key: c

03. Half-life of a drug may be helpful to determine:
a. Dosage schedule of the drug.
b. Level of absorption.
c. Distribution into different body systems.
d. Rate of absorption through GIT.
e. Time to get the steady state.
Key: e

Topic Specification: Autonomic Nervous System (MCQ 4 – 6)
Reference: Lippincott’s Pharmacology, 3
rd
Ed.

04. A 3 year old child has been admitted to emergency with
suspicious of atropine overdose as there are:
a. Abdominal cramps.
b. Increased gastric secretion.
c. Increased cardiac rate.
d. Papillary constriction.
e. Increased urinary frequency.
Key: c

05. Epinephrine does not cause increase concentrations of:
a. Glucose in blood.
b. Lactate in blood.
c. Free fatty acids in blood.
d. cAMP in heart muscle.
e. Triglycerides in fat cells.
Key: e
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BDS SECOND PROFESSIONAL EXAMINATION 2007
PHARMACOLOGY AND DENTAL MATERIA MEDICA (MCQs)
Model Paper

06. A 50 year old patient is having propranolol due to his cardiac
problems but his physician now wants to stop this drug; which
of the following is the most important reason for this step?
a. Familial tremor.
b. Partial AV heart block.
c. Mild hypertension.
d. Angina pectoris.
e. Supraventricular tachycardias.
Key: b

Topic Specification: Sedative-Hypnotics/ Anxiolytics (MCQ 7 – 9)
Reference: Lippincott’s Pharmacology, 3
rd
Ed.

07. A young man of 24 years is suffering from Generalized Anxiety
Disorder; which drug may be preferred for his problem?
a. Zolpidem.
b. Buspiron.
c. Midazolam.
d. Triazolam.
e. Phenobarbital.
Key: b

08. Which of the following statements best describes the
mechanism of action of benzodiazepines?
a. Benzodiazepines activate GABA
B
-receptors in the spinal cord.
b. They inhibit GABA-transaminase leading to increased levels of
GABA.
c. They block glutamate receptors in hierarchical neuronal pathways
in the brain.
d. Benzodiazepines increase the frequency of Cl
-
-channels opening
which are coupled to GABA
A
receptors.
e. They are direct-acting GABA receptor agonists in the CNS.
Key: d

09. Which of the following drugs when used for prolonged period
in the maintenance treatment of tonic-clonic seizures can lead
to increased metabolism of warfarin like drugs?
a. Phenobarbital.
b. Meprobamate.
c. Chlordiazepoxide.
d. Triazolam.
e. Zolpidum.
Key: a

Topic Specification: Skeletal Muscle Relaxants & Drug Acting on CNS
(MCQ 10 – 12)
Reference: Lippincott’s Pharmacology, 3
rd
Ed.

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BDS SECOND PROFESSIONAL EXAMINATION 2007
PHARMACOLOGY AND DENTAL MATERIA MEDICA (MCQs)
Model Paper

10. Characteristics of non-depolarizing neuromuscular blockade
include which of the following?
a. Block of post-tetanic potentiation.
b. Histamine blocking action.
c. Poorly sustained tetanic tension.
d. Significant muscle fasciculations during onset of block.
e. Stimulation of autonomic ganglia.
Key: c

11. Which of the following drugs given preoperatively is used to
prevent postoperative pain caused by succinylcholine?
a. Dantrolene.
b. Tubocurarine.
c. Diazepam.
d. Lidocaine.
e. Baclofen.
Key: b

12. With prolonged use in seizure states, which of the following
drugs can cause coarsening of facial features, hirsutism,
gingival hyperplasia and osteomalacia?
a. Valproic acid.
b. Carbamazepine.
c. Ethosuximide.
d. Phenytoin.
e. Gabapentin.
Key: d

Topic Specification: Analgesics; NSAIDS (MCQ 13 – 15)
Reference: Lippincott’s Pharmacology, 3
rd
Ed.

13. Only Aspirin can:
a. Reduce fever.
b. Irreversible inhibit its target enzyme.
c. Prevent episodes of gouty arthritis with long term use.
d. Reduce the risk of colon cancer.
e. Selectively inhibit the COX-2 enzyme.
Key: b
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BDS SECOND PROFESSIONAL EXAMINATION 2007
PHARMACOLOGY AND DENTAL MATERIA MEDICA (MCQs)
Model Paper

14. Indomethacin is preferred over Colchicine for Acute Attack of
Gout because it is:
a. Less likely to cause gastrointestinal bleeding.
b. Less likely to cause diarrhea.
c. Less likely to cause acute renal failure.
d. More likely to reduce inflammation.
e. More likely to prevent further acute attacks.
Key: b

15. Which of the following drugs is used in the treatment of
rheumatoid arthritis?
a. Naproxen.
b. Allopurinol.
c. Colchicine.
d. Sulfinpyrazone.
e. Leflunomide.
Key: a

Topic Specification: Analgesics; Opioids (MCQ 16 – 18)
Reference: Lippincott’s Pharmacology, 3
rd
Ed.

16. The most dangerous adverse effect by using Fentanyl patches
is:
a. Diarrhea.
b. Relaxation of respiratory muscles.
c. Hypertension.
d. Respiratory depression.
e. Skin reactions.
Key: d

17. Morphine should be used with extreme caution in all of the
following conditions but not in:
a. Biliary tract surgery.
b. Pulmonary edema.
c. Last stage of labor.
d. Hypothyroidism.
e. Adrenal insufficiency.
Key: b

18. A 35 year old patient complaining of severe pain along the
right side of the jaw and face; the best choice for this
neuralgic pain is:
a. Methadone.
b. Ibuprofen.
c. Carbamazepine.
d. Lorazepam.
e. Amphetamine.
Key: c

Topic Specification: Local Anesthetics (MCQ 19 – 21)
Reference: Lippincott’s Pharmacology, 3
rd
Ed.
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BDS SECOND PROFESSIONAL EXAMINATION 2007
PHARMACOLOGY AND DENTAL MATERIA MEDICA (MCQs)
Model Paper

19. Which of the following local anesthetics is used exclusively for
its good surface activity and low toxic potential:
a. Cocaine.
b. Benzocaine.
c. Bupivacaine.
d. Procaine.
e. Lidocaine.
Key: b

20. Which of the following drugs can cause methemoglobinemia
when used in larger doses for regional anesthesia?
a. Cocaine.
b. Lidocaine.
c. Bupivacaine.
d. Procaine.
e. Prilocaine.
Key: e

21. Epinephrine added to a solution of lidocaine for local
anesthesia will:
a. Cause cyanosis locally.
b. Increase the risk of convulsions.
c. Increase the duration of local anesthesia.
d. Increase the absorption of lidocaine.
e. Decrease the heart rate when absorbed.
Key: c

Topic Specification: General Anesthetics (MCQ 22 – 24)
Reference: Lippincott’s Pharmacology, 3
rd
Ed.

22. Which of the following inhalational anesthetic agents is having
fastest onset of action?
a. Nitric oxide.
b. Isoflurane.
c. Nitrous oxide.
d. Enflurane.
e. Nitrogen dioxide.
Key: c

23. To attempt reduction of a dislocated shoulder joint when
Ketamine is used alone it will ccause:
a. Respiratory depression.
b. Skeletal muscle rigidity.
c. Hypotension.
d. Bradycardia.
e. Analgesia.
Key: e

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BDS SECOND PROFESSIONAL EXAMINATION 2007
PHARMACOLOGY AND DENTAL MATERIA MEDICA (MCQs)
Model Paper
24. Which of the following drugs produces respiratory depression
and so reversed by flumazenil?
a. Fentanyl.
b. Propofol.
c. Ketamine.
d. Midazolam.
e. Enflurane.
Key: d

Topic Specification: Antimicrobial Agents (MCQ 25 – 27)
Reference: Lippincott’s Pharmacology, 3
rd
Ed.

25. Cephalosporins show their antimicrobial action by:
a. Binding to cytoplasmic receptor proteins.
b. Inhibition of beta-lactamases.
c. Inhibition of transpeptidation reactions.
d. Interference with the synthesis of ergosterol.
e. Inhibition of the synthesis of precursors of peptidoglycans.
Key: c

26. The most appropriate drug regimen for empiric treatment of
Gram-negative bacilli in blood is:
a. Ampicillin plus sulbactam.
b. Aztreonam.
c. Cefazolin.
d. Imipenem plus cilastatin.
e. Ticarcillin plus clavulanic acid.
Key: b

27. A BDS student while answering the question about
ciprofloxacin gave various statements; which of the following
statements was rejected by the examiner?
a. Clinical antagonism occurs when used with Co-trimoxazole.
b. Post-antibiotic effects are similar to aminoglycosides.
c. It is active against most of the middle-ear infecting organisms.
d. It may be used for urinary tract infection.
e. During treatment tend:nitis and tendon rupture may occur.
Key: a

Topic Specification: Antimicrobials Inhibitors Protein Synthesis
(MCQ 28 – 30)
Reference: Lippincott’s Pharmacology, 3
rd
Ed.

28. The mechanism underlying the resistance of G +ve organisms
to macrolides is::
a. Decreased drug permeability of the cytoplasmic membrane.
b. Methylation of binding sites on the 50-S ribosomal subunit.
c. Decreased activity of uptake mechanism.
d. Formation of estrases that hydrolyze the lactone ring.
e. Formation of acetyl transferase that inactivates macrolides.
Key: b

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BDS SECOND PROFESSIONAL EXAMINATION 2007
PHARMACOLOGY AND DENTAL MATERIA MEDICA (MCQs)
Model Paper
29. Doxycycline is:
a. Bactericidal.
b. Not excreted in the feces.
c. Having a short elimination half-life.
d. Not effective in lyme disease.
e. Not as effective as tetracycline against H.pylori.
Key: e

30. Neomycin, an aminoglycoside is:
a. Least nephrotoxic.
b. Metabolized by hepatic enzyme.
c. Used in hepatic coma.
d. A drug of choice in Rockey Mountain Spotted fever.
e. An adjunct in treatment of tuberculosis.
Key: c

Topic Specification: Antifungals/ Antivirals/ Anticancers (MCQ 31 – 33)
Reference: Lippincott’s Pharmacology, 3
rd
Ed.

31. The toxic effect of amphotericin B which definitely require
reduction of dose is:
a. Myelosuppression.
b. Hepatitis.
c. Renal Toxicity.
d. Hypotension.
e. Infusion-related adverse effects.
Key: c

32. Which of the followings is useful topically for genital herpes
infection?
a. Acyclovir.
b. Amantadine.
c. Ritonavir.
d. Trifluridine.
e. Foscarnet.
Key: a

33. Acute hemorrhage cystitis is a common toxic effect seen with:
a. Vincristine.
b. Tamoxifen.
c. Doxorubicin.
d. Cyclophosphamide.
e. Fluorouracil.
Key: d

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BDS SECOND PROFESSIONAL EXAMINATION 2007
PHARMACOLOGY AND DENTAL MATERIA MEDICA (MCQs)
Model Paper
Topic Specification: Drugs Acting on CVS/ Blood; Diuretics (MCQ 34 – 36)
Reference: Lippincott’s Pharmacology, 3
rd
Ed.

34. A young girl of 20 years has taken a suicidal overdose of
Digoxin, the drug of choice in her treatment will be:
a. Lidocaine.
b. Phenytoin.
c. Digoxin antibodies.
d. Potassium chloride.
e. Magnesium sulfate.
Key: c

35. A 45 year old patient developed severe thrombocytopenia due
to unfractionated heparin so the best alternative
anticoagulant will be:
a. Lepirudin.
b. Abciximab.
c. Urokinase.
d. Plasminogen.
e. Vit. K
2
.
Key: a

36. A 30 year old male suffering from cerebral edema will be best
treated with:
a. Furosemide.
b. Amiloride.
c. Ethacrynic acid.
d. Mannitol.
e. Acetazolamide.
Key: d

Topic Specification: Drugs Acting on GIT/Respiratory System (MCQ 37–39)
Reference: Lippincott’s Pharmacology, 3
rd
Ed.

37. While prescribing a treatment to a young female patient
suffering from peptic ulcer associated with H. Pylori the
gastroenterologist will neglect:
a. Tetracycline.
b. Vancomycin.
c. Amoxicillin.
d. Metronidazole.
e. Clarithromycin.
Key: b

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BDS SECOND PROFESSIONAL EXAMINATION 2007
PHARMACOLOGY AND DENTAL MATERIA MEDICA (MCQs)
Model Paper
38. A 35 year old lady who is on anticancer therapy is now
suffering from severe nausea and vomiting; which of the
following drugs is having most effective antiemetic actions in
this case?
a. Dexamethasone.
b. Levodopa.
c. Apomorphine.
d. Sucrulfate.
e. Omeprazole.
Key: a

39. Which of the following is a prophylactic antiasthmetic agent
that stabilizes mast cells:
a. Ipratropium.
b. Prednisone.
c. Terbutaline.
d. Cromolyn.
e. Aminophyllin.
Key: d

Topic Specification: Dental Antiseptics & Disinfectants (MCQ 40 – 42)
Reference: Pharmacology and Therapeutic for Dentistry by Yagiela, Dowd,
Neidle, 5
th
Ed.

40. A senior dental surgeon is very much concerned about the
systemic effect of the topically-used drugs for plaque
prevention; which of the following drugs will least be
considered by him due to the same reason?
a. Vancomycin.
b. Bacitracin.
c. Polymyxin – B.
d. Clarithromycin.
e. Kanamycin.
Key: d

41. Peppermint is least useful in:
a. Gingivitis.
b. Periodontitis.
c. Young children.
d. Dental gum.
e. Antiseptic gel.
Key: c

42. Clove oil:
a. Can not be used as temporary filling material.
b. Has no anti-inflammatory effect.
c. Can not increase bleeding when applied.
d. Has antifungal activity also.
e. Can not be used as mouth rinse.
Key: d

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BDS SECOND PROFESSIONAL EXAMINATION 2007
PHARMACOLOGY AND DENTAL MATERIA MEDICA (MCQs)
Model Paper

Topic Specification: Desensitizing Agents, etc. (MCQ 43 – 45)
Reference: Pharmacology and Therapeutic for Dentistry by Yagiela, Dowd,
Neidle, 5
th
Ed.

43. Eugenol when sealed in a root canal preparation leads to
severe tissue damage:
a. Without pain as it has analgesic effect.
b. Without pain as it has local anesthetic effect.
c. Because it has corrosive effect.
d. With local bleeding also.
e. With severe pain so needs an oral analgesic also.
Key: a

44. Which of the following statements is least related to
Chlorhexidine (0.2%)?
a. It is useful in reducing plaque formation.
b. It can cause staining of the teeth.
c. There is increased formation of calculi.
d. Alteration in taste perception is also observed.
e. It is not effective in gingivitis.
Key: e

45. Which of the following statements is rarely seen with
Azadirachta Indica (Neem):
a. Can be used in toothpaste.
b. Shows antimicrobial activity.
c. Has mild abrasive effects.
d. Can not inhibit plaque formation.
e. Can have some antiseptic effects also.
Key: d

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