Stages of Anaesthesia

Question 1

Stage 1 (Voluntary Excitement)

Answer 1

• Induction, can appear disoriented

- Good muscle tone and most/all reflexes still present

Question 2

Stage 2 (Involuntary Excitement)

Answer 2

• Onset of unconsciousness (breath holding)
• Lasts till breathing rhythmic
• Eyes central
• Palpebral present

Question 3

Stage 3 (Surgical Stage)
Plane 1: Light Anaesthesia

Answer 3

• Intubation possible
• For minor exams/procedures
• Some reflexes present
• Eyes central to VM
• Palpebral sluggish
• Jaw tone present to sluggish

Question 4

Stage 3 (Surgical Stage)
Plane 2-3: Surgical Anaesthesia

Answer 4

• Most/all reflexes absent
• Eyes VM
• Palpebral absent
• Jaw tone sluggish to minimal

Question 5

Stage 3 (Surgical Stage)
Plane 4 (Deep/Overdose)

Answer 5

• TOO DEEP
• Respiratory paralysis
• Pulse impalpable
• Eyes central
• Palpebral absent
• Jaw tone absent
• MM pale pink to pale