Local And General Anaesthesia Flashcards
Gow Gates and Akinosi techniques are for
Intraoral Mandibular anaesthesia
The Needle is inserted and directed ……… to the Lateral pterygoid plate below foramen ovale for extraoral mandibular anaesthesia.
Posterior
The Needle is inserted and directed ……… to the Lateral pterygoid plate into the pterygomandibular fossa for extraoral maxillary anaesthesia.
Anterior
Example of long acting local anaesthetic is……..
Etidocaine - 200 mins
Bupivacaine - 180 mins
Theories of Local anesthetic action are
- Membrane Expansion Theory
- Calcium Displacement Theory
- Electrical Potential Theory
- Specific Receptor Theory (most accepted Theory)
In hemophilia the technique of local infiltration applied is ………
Intraligamentary (Intraosseous technique) the solution is deposited in the depth of gingival sulcus.
the needle is inserted APICALLY into the bone until resistance is met.
Adrenaline should not be combined with which local anaesthetic?
Cocaine (natural local anaesthetic) has vasoconstrictor action of increases vasoconstrictive action of Adrenaline. Lethal in case of cocaine abusers, they’re called Walking Time Bombs.
Maximum dose of Lidocaine without Adrenaline is
4 mg/kg body weight not exceed 300 mg.
Maximum dose of Lidocaine with vasoconstrictor is
7 mg/ kg body weight should not exceed 500mg
Gate Control Theory was proposed by
Melzack and Wall (1965)
the amount of vasoconstrictor in 1 ml of 2% lidocaine with 1: 2,00,000 adrenaline is
0.005 mg
Muscle pierced by needle when giving interior alveolar nerve block is
Buccinator
Which muscle is pierced by needle while giving interior alveolar nerve block?
Buccinator
A bilateral Mandibular block
is dangerous because of Tongue fall but NOT CONTRAINDICATED.
General Anaesthesia techniques should be used in oral surgery
Nasoedotracheal Tube with throat pack
Long acting but toxic LA is
Dibucaine
Which drug is used to prevent Laryngospasm due to GA
Succinylcholine
Absolute contraindication for the use of local anaesthetic is
Hypersensitivity to the drug
Inferior alveolar nerve block is absolutely contraindicated in patients suffering from -
Hemophilia
Inferior alveolar and posterior superior alveolar should be avoided due to possibility of dissecting hematoma. Factor 8 replacement therapy indicated and Interligamentary Technique is preferred.
Which nerve fibre are sensitive to LA
C Fibres