Pharmacology of local anesthesia and vasoconstrictor #WikiDentia

JavaScript isn't enabled in your browser, so this file can't be opened. Enable and reload.

1. Which of the following is most commonly used vasoconstrictor in present day practice?

1 point

A. Dopamine

B. Felypressin

C. Adrenaline

D. Noradrenaline

Clear selection

2. The standard American cartridges contain:

1 point

A. 1ml of the anesthetic solution

B. 1.5ml of the anesthetic solution

C. 1.8ml of the anesthetic solution

D. 2 ml of the anesthetic solution

Clear selection

3. A solution containing adrenaline as 1:100,000, contains how many milligrams of adrenaline per ml?

1 point

A. 0.0001 mg/ml

B. 0.001 mg/ml

C. 0.01 mg/ml

D. 0.1 mg /ml

Clear selection

4. Which of the followings is used as a reducing agent in local anesthetic solution?

1 point

A. Thymol

B. Methyl paraben

C. Sodium metabisulfite

D. Clove oil

Clear selection

5. Which of the followings is used as a preservative in local anesthetic solution?

1 point

A. Adrenaline

B. Sodium metabisulfite

C. Methylparaben

D. Thymol

Clear selection

6. Which of the following is/are contraindication/s of local anesthetic with adrenaline?

1 point

A. Allergy to local anesthetic solution

B. Acute infection

C. Hyperthyroidism

D. All of the above

Clear selection

7. One of the complications of prilocaine LA is:

1 point

A. Agranulocytosis

B. Hepatic dysfunction

C. Methemoglobinemia

D. None of the above

Clear selection

8. Local anaesthetics are excreted mainly by:

1 point

A. Lungs

B. Fecal route

C. Kidneys

D. Uterus

Clear selection

9. Which of the following is not used as a topical local anesthesia?

1 point

a) Procaine

b) Tetracaine

c) Lidocaine

d) Benzocaine

Clear selection

10. Maximum recommended dosage of lignocaine with 1:1,00,000 adrenaline subcutaneously is

1 point

a) 100 mg

b) 30 mg

c) 500 mg

d) 700 mg

Clear selection

11. The maximum dose of lignocaine without adrenaline that can be admitted to a patient is

1 point

a) 4 mg/kg body wt

b)5 mg/kg body wt

c) 7 mg/kg body wt

d) 9 mg/kg body wt

Clear selection

12. The duration of anesthesia is decreased when less than the recommended dose of anesthetic is administered. However, excessive amounts will not increase the duration of anesthesia.

1 point

a. Both statements are true.

b. Both statements are false.

c. The first statement is true; the second is false.

d. The first statement is false; the second is true.

Clear selection

13. Which statement is true?

1 point

a. Procaine is an amide local anesthetic.

b. Procaine has a rapid anesthetic onset.

c. Procaine provides no pulpal anesthesia.

d. Procaine produces profound vasoconstriction.

Clear selection

14. Topical anesthetics

1 point

a. penetrate intact skin.

b. are moderately vasoconstrictive.

c. are effective within 2–3 mm of the application site.

d. usually contain less anesthetic drug than injectable anesthetics.

Clear selection

15. Epinephrine (Adrenalin) which is used in dental cartridge of LA acts on:

1 point

A. a receptors only

B. B receptors only

C. a and B receptors but B predominantly

D. a and B receptors but a predominantly

Clear selection

16. When local anaesthetic agent with adrenalin is injected, the termination of activity of the vasoconstrictor is brought by:

1 point

A. Adrenergic nerve endings

B. Blood enzymes COMT and MAO

C. Excretion in urine (80%)

D. A and B

Clear selection

17. Use of norepinephrine in dental practice is not recommended because it causes:

1 point

A. Bradycardia

B. Intense peripheral vasoconstriction

C. Hypertension

D. Sensitisation of myocardium

Clear selection

18. When one has to use the weakest vasoconstrictor (e.g. in patient with history of angina) one should consider:

1 point

A. Epinephrine

B. Norepinephrine

C. Phenylephrine

D. Levonordefrin

Clear selection

19. Rebound phenomenon is most commonly seen with use of:

1 point

A. Epinephrine

B. Norepinephrine

C. Phenylephrine

D. Levonordefrin

Clear selection

20. The absolute contraindication for use of adrenalin in LA is:

1 point

A. Myocardial infarction, 3-6 months ago

B. Angina pectoris

C. Hyperthyroidism

D. Pregnancy

Clear selection

Submit

Clear form

Forms

This content is neither created nor endorsed by Google.