Inhalation Agents

Question 1

CV effects of Volatile inhalational agents:

which ones decrease Arterial bp

Answer 1

halothane

iso

des

Sevo (the least)

Question 2

CV effects of Volatile inhalational agents:

which ones decrease SVR

Answer 2

des

iso

Question 3

CV effects of Volatile inhalational agents:

which one decreases CO the most

Answer 3

Halothane

Question 4

CV effects of Volatile inhalational agents:

which one increase HR the most

Answer 4

iso

Question 5

CV effects of Volatile inhalational agents:

which one is most sesitive to catecholamines

Answer 5

Halothane

Question 6

which system represents the greatest blood solubility? and which has the lowest blood solubilty?

Answer 6

3 greatest (iso)

Question 7

Rank the order if blood solubilty from greatest to least

Answer 7

3

Question 8

fill in the Blood:gas:

Answer 8

Question 9

Explain how to remeber the blood:gas

Answer 9

N20 always 10 or 100 so 0.46 (4+6=10)

Des always 6 so 0.42 (4+2=6)

Sevo always 7 so 0.7

Iso start with 1.5 (1.46)

Enflurane add .4 =1.9

halothane add .6 2.5

Question 10

label the % equilibrated at 30min

rounding is good enough (dont need to be exact)

Answer 10

Question 11

how do u remeber the order of uptake from slowest to fastest and he values of % equlibrated at 30 min?

Answer 11

first ask what is the anesthesiologist doing?

HE IS Doing Nothing (from bottom up slowest to fastest)

then remember halothane was made in the 50’s and add a decade going up on each one

Question 12

label this

( i miss this on every exam not anymore)

Answer 12

Question 13

label blood:gas coefficient and Fa/Fi ratios at 30 min

Answer 13

A) halothane

B) enflurane

C) isoflurane

D) sevo

E) des

F) N2O

Question 14

label each curve on the right withh the oil:gas partition coefficient Then tell me what you noticed??

Answer 14

A) halothane

B) enflurane

C) isoflurane

D) sevo

E) des

F) N2O

The graph doesn;t change- Oil:gas is potency and Blood:gas is onset. the more potent the slower onset. the least potent the faster onset.

Question 15

label each curve with the correct MAC value and tell me what you notice??

Answer 15

A) halothane

B) enflurane

C) isoflurane

D) sevo

E) des

F) N2O

The graph doesn;t change- Oil:gas is potency and Blood:gas is onset. the more potent the slower.

the more potent the lower MAC

Ex halothane is the slowest onset blood:gas 2.5 (highest), but has the lowest MAC (0.75) which makes it the most potent