Lignocaine 1% CPG

Question 1

Lignocaine 1% - Presentation

Answer 1

50 mg in 5 mL amp (1%)

Question 2

Lignocaine 1% - Pharmacology

Answer 2

A local anaesthetic agent

Actions:

• Prevents initiation and transmission of nerve impulses causing local anaesthesia (1% solution)

Question 3

Lignocaine 1% - Metabolism

Answer 3

By the liver (90%)

Excreted unchanged by the kidneys (10%)

Question 4

Lignocaine 1% - Primary emergency indications

Answer 4

1. Diluent for Ceftriaxone for IM administration in suspected meningococcal disease
2. Chest wall infiltration as local anaesthetic to facilitate chest decompression in patients with GCS > 10

Question 5

Lignocaine 1% - Contraindications

Answer 5

1. Known hypersensitivity

Question 6

Lignocaine 1% - Precautions

Answer 6

1. When using Lignocaine 1% under these indications it is importnt to rule out inadvertent IV administration due to potential CNS complications

Question 7

Lignocaine 1% - Route of administration

Answer 7

IM (1% solution with Ceftriaxone only)

Local tissue infiltration for chest decompression (MICA only)

Question 8

Lignocaine 1% - Side effects

Answer 8

Nil - unless inadvertant IV administration

Question 9

Lignocaine 1% - Special notes

Answer 9

IM effects:

Onset: Rapid

Peak: n/a

Duration: 1 - 1.5 hours