Anaesthetic Agents

Question 1

What is the boiling point of Sevoflurane?

Answer 1

59 C

Question 2

What is the boiling point of Desflurane?

Answer 2

23 C

Question 3

What is the boiling point of Nitrous Oxide?

Answer 3

-89 C

Question 4

Order the volatile anaesthetic agents in order of potency

Answer 4

Halothane
Isoflurance
Enflurane
Sevoflurane
Desflurane
Xenon
Nitrous Oxide

‘Have I Ever Sucked Dick, (x) No’

Question 5

What is the MAC of Sevoflurane?

Answer 5

2.0

Question 6

What is the MAC of Isoflurane and Enflurane?

Answer 6

Isoflurane - 1.1
Enflurane - 1.6

Question 7

What is the MAC of Nitrous Oxide?

Answer 7

104

Question 8

What has an Oil:Gas partition co-effecient (@ 37 degrees C) of 47?

Answer 8

Sevoflurane

Question 9

What has an Oil:Gas partition co-effecient (@ 37 degrees C) of 224?

Answer 9

Halothane

Question 10

What volatile anaesthetic agent has the lowest Oil:Gas partition co-effecient (@ 37 degrees C)?

Answer 10

Nitrous Oxide

Question 11

Order the volatile anaesthetic agents by the percentage metabolised (highest to lowest)

Answer 11

Halothane (20%)
Sevoflurane (5%)

Enflurane (2%)
Isoflurane (0.2%)
Desflurane (0.02%)

‘EID’

Question 12

What is the Blood:Gas partition co-effecient (@ 37 degrees C) of Sevoflurane?

Answer 12

0.68

Question 13

Which volatile anaesthetic agent has a MAC value of 6?

Answer 13

Desflurane

Question 14

What are the key features of Sevoflurane?

Molecular Weight
Boiling Point
SVP
MAC
B:G
O:G

Answer 14

Molecular Weight: 200

Boiling Point: 58

SVP: 22.7

MAC: 1.8-2.0

B:G: 0.70

O:G: 80

Question 15

Although Isoflurane and Enflurane are structural isomers of one another, which 2 physiochemical properties are the only identical values, and what are they?

Answer 15

Molecular Weight - 184.5
Oil:Gas Partition Coefficient - 98