IA Comparison

Question 1

VA most decrease CMRO2

Answer 1

all equallY

Question 2

Compare VA with regard to their effects on blood flow

Answer 2

all equally

Question 3

LEAST likely to produce potentially dangerous increases in ICP if modest hypocapnia is present

Answer 3

Isoflurane

Question 4

most likely to produce coughing in an LMA intubation

Answer 4

Isoflurane

Question 5

VA that is completely halogenated

Answer 5

Desflurane

Question 6

which VA least potentiate muscle relaxants?

Answer 6

ALL OF modern VA

Question 7

How are VA carried in the blood

Answer 7

dissolved

Question 8

At 30 mins what is the FA FI for each inhalation agent at a constant inspired concentration?

Answer 8

Iso: 0.73, Sevo, 0.85, Des: 91

Question 9

Brain uptake of anesthetic depends on what four factors?

Answer 9

1. Blood Solubility –> the higher the solubility the slower the uptake
2. Cardiac Output
3. Alveolar ventilation –> increasing the ventilation speeds uptake
4. Inspired concentration –> increasing inspired concentration speeds brain uptake

Question 10

List 7 factors that decrease MAC

Answer 10

1. Increasing Age
2. Hypothermia
3. CNS depressants
4. Acute ethanol intoxication
5. Alpha-2 agonists
6. Pregnancy
7. decrease levels of CNS excitatory neurotransmitters

Question 11

List three factors that increase MAC

Answer 11

1. Hyperthermia
2. Hypernatremia
3. Increased levels of CNS excitatory neurotransmitter as would occur with cocaine use or the administration of MAOI

Question 12

What are the MAC requirements for a full-term infant, compared to the adult?

Answer 12

The MAC value for a full-term infant is the same as for the adult

Question 13

Three renal changes associated with administration of VA

Answer 13

decrease in

1. renal blood flow
2. glomelular filtration rate
3. urine outout

Question 14

How are VA metabolized?

Answer 14

by the CYP 450 also known as mixed- function oxidases

Question 15

arrange from greatest to least with respect to the production of carboxyhemoglobin

Answer 15

desflurane > isoflurane

Question 16

Which two modern volatile anesthetics have only flourine as the halogen substitution?

Answer 16

Des and Sevo

Question 17

Which two volatile anesthetics most decrease SVR

Answer 17

Isoflurane and Des