LOCAL ANAESTHETIC MCQs

 


LOCAL ANAESTHETIC





1. Cocaine is an example of which type of local anesthetic? 
a) Ester 
b) Amide 
c) Both ester and amide 
d) None of the above

2. Local anesthetics are often combined with which of the following to prolong their effects? 
a) Epinephrine 
b) Corticosteroids 
c) Antibiotics 
d) Antihistamines

3. Which of the following local anesthetics has the fastest onset of action? 
a) Lidocaine 
b) Benzocaine 
c) Procaine 
d) Bupivacaine

4. Which of the following local anesthetics is commonly used for topical anesthesia of mucous membranes? 
a) Bupivacaine 
b) Lidocaine 
c) Cocaine 
d) Benzocaine

5. Which of the following local anesthetics is typically used topically? 
a) Bupivacaine 
b) Benzocaine 
c) Lidocaine 
d) Procaine

6. Local anesthetics primarily exert their effect on nerve conduction in which region of the neuron? 
a) Axon terminal 
b) Axon 
c) Cell body 
d) Dendrites

7. Which of the following local anesthetics is commonly used for infiltration anesthesia in dermatological procedures? 
a) Bupivacaine 
b) Lidocaine 
c) Mepivacaine 
d) Procaine

8. Local anesthetics primarily exert their effect on which type of nerve fibers? 
a) Afferent 
b) Efferent 
c) Both afferent and efferent 
d) Sympathetic

9. Which of the following local anesthetics is commonly used for ophthalmic procedures? 
a) Tetracaine 
b) Procaine 
c) Lidocaine 
d) Bupivacaine 




10. Which of the following local anesthetics is commonly used for infiltrative anesthesia? 
a) Bupivacaine 
b) Procaine 
c) Lidocaine 
d) All of the above 

11. Which of the following local anesthetics is commonly used for spinal anesthesia in obstetrics? 
a) Bupivacaine 
b) Levobupivacaine 
c) Lidocaine 
d) Procaine

12. In which form do local anesthetics penetrate nerve membranes? 
a) Non-ionized 
b) Ionized 
c) Neutral 
d) Acidic

13. Which of the following local anesthetics is commonly used for nerve block procedures? 
a) Lidocaine 
b) Bupivacaine 
c) Both Lidocaine and Bupivacaine 
d) Benzocaine

14. Which of the following local anesthetics has the longest duration of action? 
a) Lidocaine 
b) Procaine 
c) Bupivacaine 
d) Benzocaine

15. Which of the following local anesthetics is commonly used for dental procedures? 
a) Bupivacaine 
b) Procaine 
c) Lidocaine 
d) Benzocaine 

16. Paresthesia is a potential adverse effect associated with which local anesthetic? 
a) Procaine 
b) Lidocaine 
c) Bupivacaine 
d) Articaine

17. Allergic reactions to local anesthetics are most commonly associated with which type of local anesthetic? 
a) Ester 
b) Amide 
c) Both ester and amide 
d) None of the above

18. Local anesthetics work by blocking nerve conduction through inhibition of: 
a) Acetylcholine receptors 
b) NMDA receptors 
c) Sodium channels 
d) Potassium channels 

19. Local anesthetics are typically metabolized in the: 
a) Liver 
b) Kidneys 
c) Liver and plasma 
d) Gastrointestinal tract



20. Methemoglobinemia is a potential adverse effect associated with which local anesthetic? 
a) Prilocaine 
b) Bupivacaine 
c) Benzocaine 
d) Lidocaine

21. Local anesthetics with an amide linkage in their chemical structure include: 
a) Procaine 
b) Lidocaine 
c) Benzocaine 
d) Tetracaine 

22. Local anesthetics primarily block which type of channels? 
a) Potassium channels 
b) Sodium channels 
c) Calcium channels 
d) Chloride channels

23. Local anesthetics with an ester linkage in their chemical structure include: 
a) Procaine 
b) Lidocaine 
c) Bupivacaine 
d) Ropivacaine

24. Local anesthetics are typically administered via which route for systemic effects? 
a) Oral 
b) Intravenous 
c) Subcutaneous 
d) Intramuscular

25. Which of the following local anesthetics is associated with a longer duration of action? 
a) Procaine 
b) Bupivacaine 
c) Lidocaine 
d) Benzocaine 

26. Which of the following local anesthetics is commonly used for spinal anesthesia? 
a) Benzocaine 
b) Procaine 
c) Bupivacaine 
d) Lidocaine

27. Local anesthetics are weak bases and are most effective in which form? 
a) Non-ionized 
b) Ionized 
c) Neutral 
d) Acidic

28. Which of the following local anesthetics is commonly used for epidural anesthesia during childbirth? 
a) Procaine 
b) Bupivacaine 
c) Lidocaine 
d) Ropivacaine 

29. Which of the following is NOT a local anesthetic drug? 
a) Lidocaine 
b) Aspirin 
c) Procaine 
d) Bupivacaine

30. All of the following are adverse effects of local anesthetics EXCEPT: 
a) Hypotension 
b) Hyperkalemia 
c) Allergic reactions 
d) Bradycardia



ANSWER

01. b 
02. a 
03. c 
04. c 
05. b 
06. b 
07. c 
08. c 
09. a 
10. d 
11. b 
12. a 
13. c 
14. c 
15. c 
16. d 
17. c 
18. c 
19. c 
20. a 
21. b 
22. b
23. a 
24. d 
25. b 
26. c 
27. a 
28. d 
29. b 
30. b


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