Basic local anesthesia injection techniques l Oral and maxillofacial surgery MCQs for dental students
More MCQ in basic local anesthesia injection techniques
1. The most commonly used route of drug administration is:
A. Oral
B. Rectal
C.
Intranasal
D.
Intramuscular
2. The most valuable route to sedate young children is:
A.
Intravenous
B.
Intramuscular
C. Rectal
D.
Sublingual
3. In peripheral nerve block, which of the following local anesthetics has the longest duration of action?
A.
Bupivacaine
B.
Lignocaine
C. Cocaine
D.
Prilocaine
4. The longest acting most patent and most toxic local anesthetic is:
A. Lidocaine
B. Dibucaine
C
Bupivacaine
D.
Tetracaine
5. Which of the following is the preferred local anesthetic technique for hemophiliacs:
A. Nerve
block
B.
Supraperiosteal
C.
Intraligamentary
D. Field
block
6. Local anesthetic with adrenaline is absolutely contraindicated
A. First
trimester of pregnancy
B.
Hyperthyroidism
C. Hemophilia
D.
Hypertension
7. Lidocaine is an example of an:
A. Acid
B. Ester
C. Amide
D. Aldehyde
8. Which of the following muscles is pierced by the needles while giving an inferior alveolar nerve block:
A. Medial
pterygoid
B. Superior
constrictor
C.
Temporalis
D.
Buccinator
9. Which of the following is used to prevent laryngospasm due to
A. Atropine
B.
Epinephrine
C. Diazepam
D.
Succinylcholine
10. The effect of local anesthetic can be increased by the addition of:
A.
Adrenaline
B.
Isoprenaline
C. Dopamine
D.
Felypressin
11. Which of the following local anesthetic is a vasoconstrictor?
A. Lidocaine
B. Procaine
C.
Bupivacaine
D.
Ropivacaine
12. The dose of epinephrine given in anaphylaxis:
A. 0.5 mg in
1:1000 im/ sc
B. 0.5 mg in
im/ sc
C. 0.5 mg in
1:500 im/ sc
D. 0.5 mg in
1:100 im/ sc
13. Most difficult maxillary tooth to anaesthetize by infiltration is:
A. First
molar
B. First
premolar
C. Canine
D. Third
molar
14. Which of the following symptoms is seen in a patient administered with 20-40 percent nitrous oxide?
A.
Paresthesia
B. Floating
sensation
C. Sweating
D. None of
the above
15. LA acts on nerve membrane by:
A. Blocking
conductance of Na+ from interior to exterior
B. Blocking
conductance of Na+ from exterior to interior
C. Blocking
conductance of K+ from interior to exterior
D. Blocking
conductance of K+ from exterior to interior
16. How much lignocaine is present in 20 ml of 2 percent lignocaine solution:
A. 400 mg
B. 200 mg
C. 300 mg
D. 120 mg
17. The action of adrenaline is potentiated in the presence of all except.
A. Halothane
B. Ethyl
chloride
C.
Cyclopropane
D. Ether
18. When blocking a nerve containing both molar and sensory fibres, the last functional property lost is:
A.
Temperature
B. Pain
C.
Proprioception
D. Touch
19. Sensitivity to local anesthetic is greater in:
A. Type B
fibres
B. Type C
fibres
C Type A
delta fibres
D. Fibres
supplying the muscle fibres
20. Which of the following is not used as a topical LA?
A. Procaine
B.
Tetracaine
C. Lidocaine
D.
Benzocaine
21. The safe dose of adrenaline in patients with compromised cardiac condition is:
A. 0.2 mg/
kg body wt
B. 0.02 mg/
kg body wt
C. 0.4 mg/
kg body wt
D. 0.04 mg
22. A bilateral mandibular block:
A. Is
dangerous because patient may swallow tongue
B. May lead
to space infection
C. Is not
contraindicated
D. Should
rarely be performed
0 Comments