Lignocaine

Question 1

Lignocaine Intro

Answer 1

• Reversibly interrupt impulse conduction in peripheral nerves and stabilise excitable cell membranes by blocking Sodium Channels
• Onset 1-2 minutes

Question 2

Lignocaine Indications

Answer 2

Local anaesthesia for:

• IV cannulation
• IO infusion
• Suturing
• Finger thoracostomy in the conscious patient

Question 3

Lignocaine Contraindications

Answer 3

Hypersensitivity

Question 4

Lignocaine Precautions / Notes

Answer 4

Adverse drug reactions are rare when lignocaine is used as a local anaesthetic and is administered correctly.

Question 5

Lignocaine Presentation

Answer 5

20mg/2ml OR 50mg/5mL; (both 1%)

Question 6

Lignocaine Special Considerations (Side Effects)

Answer 6

• Tinnitus, dizziness, anxiety, confusion, perioral numbness
• Cardiovascular effects: Bradycardia, hypotension, dysrhythmias
• CNS effects : Respiratory depression