Anaesthetics

Question 1

Name 4 intravenous anaesthetics

Answer 1

Propofol, barbiturates, etomidate, ketamine

Question 2

What is the 2nd stage of Guedel’s signs?

Answer 2

Unconscious, breathing erratic but delirium could occur, causing excitement phase with increased muscle tone

Question 3

What is used to describe the potency of volatiles?

Answer 3

Minimum alveolar concentration (MAC)

Question 4

What is the minimum alveolar concentration (MAC)?

Answer 4

concentration at which 50% of the population fails to move to surgical stimulus

Question 5

What kind of things affect MAC?

Answer 5

Age, hyperthermia, pregnancy, alcoholism, other anaesthetics or opioids

Question 6

How does Nitrous Oxide effects MACs?

Answer 6

Adding nitrous oxide is added to volatile agents to reduce dosing. MAC is reduced

Question 7

Which receptor do anaesthetics most commonly affect?

Answer 7

GABAa receptors, inhibitory transmitter cl-

Question 8

What links are in local anaesthetics?

Answer 8

ester link (short action) amide link (long action)