Gasses

Question 1

Loss of chest wall stability

Answer 1

Halothane

Question 2

Decreases seizure threshold

Answer 2

Enflurane

Question 3

Order of increased CBF

Answer 3

Halo>Enf>Iso=Des

Question 4

Decrease in BP due to Decreased myocardial contractility

Answer 4

Halothane

Question 5

order of decreased SVR greatest to least

Answer 5

Iso>des>sevo

Question 6

Order of cardiac stimulation

Answer 6

Des>iso>sevo

Question 7

Order of coronary vasodilation

Answer 7

Iso>des>sevo

Question 8

Order for CMRO2

Answer 8

Iso=des=sevo>Halo

Question 9

Dose depended decreased in CO

Answer 9

halothane

Question 10

Order for hepatic effects

Answer 10

Halo>Enf>Iso>Des (no sevo)

Question 11

Order for carbon monoxide toxicity

Answer 11

Des>Enf>Iso
(halothane and sevo do not)

Question 12

What gas increases motor activity

Answer 12

N2O

Question 13

Which 3 gases suppress convulsant properties

Answer 13

Sevo, Iso, Des

Question 14

Fast frequency and high voltage on EEG indistinguishable from changes produced by seizure activity

Answer 14

Enflurane

Question 15

Intrinsic dose dependen cerebral vasodilatory effect, but this effect is less than that of iso

Answer 15

Sevo

Question 16

Twitching of facial and extremity muscles occurs

Answer 16

Enflurane

Question 17

Which gas has the least effect on increased ICP (it still increases it but not as much as the other gases)

Answer 17

N2O

Question 18

No change in BP or modest increased when given alone

Answer 18

N2O

Question 19

Order for Heart rate

Answer 19

Des>iso>sevo

Question 20

Depresses carotid sinus

Answer 20

N20

Question 21

what has no change in HR

Answer 21

Halothane

Question 22

Which gas increases Cardiac output

Answer 22

N2O

Question 23

Which gas causes dose dependent decrease in cardiac output

Answer 23

sevo (up to 2 MAC then recovers)

Question 24

Which gas decreases cardiac output

Answer 24

Halothane

Question 25

All gases decrease what Stroke volume

Answer 25

Left

Question 26

What two gases have no change in SVR

Answer 26

halothane and N2O

Question 27

What gas increases PVR exaggerated in PHTN, neonates, congenital heart dx

Answer 27

N2O

Question 28

What gases decrease PVR

Answer 28

Sevo, iso, des (des at MAC 1.6)

Question 29

which two gases transiently increase ALT

Answer 29

Enflurane and Desflurane

Question 30

at a MAC of what causes vasodilation of hepatic circulation (increased proton vein blood flow) for isoflurane

Answer 30

1.5

Question 31

what 3 gases are at risk for causing hepatoxicity

Answer 31

Iso, des and enflurane

Question 32

What gas causes possible rigidity in a hyperbaric chamber

Answer 32

N2O

Question 33

what is the most potent trigger for MH

Answer 33

halothane

Question 34

what 3 gases cause skeletal muscle relaxation

Answer 34

sevo, iso, des

Question 35

what effect do all volatile anesthetics cause to the kidneys

Answer 35

decreases renal blood flow decreased GFR decreased urine output

Question 36

vinyl halide nephrotoxicity from what gas react with CO2 absorbents. What can you do to reduce this

Answer 36

sevo need 2L/min for FGF to minimize compound A

Question 37

what gas has very little metabolism- mainly by anaerobic bacteria in GI tract

Answer 37

N2O

Question 38

3% metabolized by cytochrome P-450 oxidative metabolism

Answer 38

Enflurane

Question 39

15-20% metabolized by cytochrome P-450 oxidative metabolism

Answer 39

halothane

Question 40

0.02% metabolized by cytochrome P-450 oxidative metabolism

Answer 40

Des

Question 41

0.2% metabolized by cytochrome P-450 oxidative metabolism

Answer 41

Iso

Question 42

5% metabolized by cytochrome P-450 oxidative metabolism

Answer 42

Sevo

Question 43

what gas degrades by CO2 absorbents to compound A

Answer 43

sevo

Question 44

Coronary blood flow

Answer 44

Halo, Enf