Physics

Question 1

Henry’s Law

Answer 1

that at a particular temperature, the amount of a given gas dissolved in a given liquid is directly proportional to the partial pressure of the gas in equilibrium with the liquid.

Question 2

Effects of Temperature on Henry’s law

Answer 2

As temperature increases slubility decreases

Question 3

Otswald Solubility coefficient

Answer 3

is the volume of gas which dissolves in 1 unit volume of the liquid at the temperature concerned.
(indepent of Pressure)

Question 4

Bunsen Solubilty Coefficient

Answer 4

is the volume of gas, corrected to STP, which dissolves 1 unit volume of the liquid at the temperature concerned, where the partial pressure of the gas above the liquid is 1 standard atmosphere pressure.

Question 5

Partition Coefficient

Answer 5

the ratio of the amount of substance present in one phase compared with another, the two phases being of equal volume.

Question 6

Nitrous Oxide

Answer 6

Blood/gas = 0.47
Vapor Pressure = 39,000
MAC = 105

Question 7

Halothane

Answer 7

Blood/gas = 2.4
Vapor Pressure = 243
MAC = 0.75

Question 8

Isoflurane

Answer 8

Blood/gas = 1.2
Vapor Pressure = 240
MAC = 1.2

Question 9

Desflurane

Answer 9

Blood/gas = 0.42
Vapor Pressure = 681
MAC = 6

Question 10

Sevoflurane

Answer 10

Blood/gas = 0.65
Vapor Pressure = 160
MAC = 2.0

Question 11

Factors that affect Uptake of Inhalational Gases

Answer 11

Solubility of the agent in Blood

Less soluble = Faster Induction

Question 12

Factors that affect Uptake of Inhalational Gases

Answer 12

High cardiac output

High CO= Slower Induction

Question 13

Factors that affect Uptake of Inhalational Gases

Answer 13

Diff in partial pressure between alveolar gas and venous blood