Anaesthetics

Question 1

What is the triad of anaesthetic drugs used?

Answer 1

Anasthesia/hypnoxia
Muscle relaxants
Analgesia

Question 2

What is the sequence of anaesthetic drugs?

Answer 2

Short acting opiate

Induction agent

+/- muscle paralysis

Intubation + maintenance

Question 3

What is the common induction agent used?

Answer 3

Propofol

Question 4

How is the induction agent dosed?

Answer 4

By weight

Question 5

How is the maintenance agent dosed?

Answer 5

By MAC

Question 6

What is MAC?

Answer 6

Minimum alveolar concentration - measures potency

Question 7

What does 1 MAC equal?

Answer 7

Concentration to prevent movement of patients with a standard excision

Question 8

What are indications for muscle relaxants?

Answer 8

Tracheal intubation
Surgical relaxation
Ventilation control

Question 9

What factors affect MAC?

Answer 9

Age (higher in infants, lower in elderly)
Hyperthermia (increased)
Hypothermia (decreased)
Pregnancy (increased)
Alcoholism (increased 
Opioids (decreased)

Question 10

What are the common local anaesthetics?

Answer 10

Lidocaine
Bupivacaine
Ropivacaine
Procaine