Local Anaesthesia

Local Anaesthesia

1). Adrenaline is added to local anesthetic agents because it

a)      Potentiate the action of all anesthetic agents

b)      Increases the rate of destruction of local anesthetic agent

c)      Decrease the rate  of absorption of local anaesthetic at injection site

d)     Prevents deterioration of anaesthetic solution

ANS: C

2). Amide type of local anaesthetic agents undergo biotransformation primarily in

a)      Kidney

b)      Liver

c)      Plasma

d)     No biotransformation

ANS: C

3). Toxic dose of lignocaine with adrenaline is

a)      5 mg/kg body wt

b)      10 mg/kg body wt

c)      15 mg/kg body wt

d)     20 mg/kg body wt

ANS: A

4). Of the following in which condition local anaesthesia is ineffective

a)      Edema

b)      Localized infection

c)      Hematoma

d)     Anemia

ANS B

5). All of the following areas become anaesthetized by inferior alveolarar nerve block except

a)      Lower incisors

b)      Lower third molars

c)      Buccal gingiva of mandibular second molars

d)     Mandibular 2^nd premolar

ANS C

6). Anterior palatine nerve is anaesthetized by anterior palatine nerve block , the subjective symptoms include

a)      Feeling of numbness of posterior palate

b)      Feeling of numbness in anterior part of palate near incisors

c)      Feelin of numbness of entire palate

d)     Little or no subjective symptoms

ANS: a