anesthetics

Question 1

inhaled anesthetic that is a better choice for patients with impaired myocardial function because it depresses contractility less BUT it can cause a significant rise in HR

Answer 1

Isoflurane (Forane)

Question 2

inhaled anesthetic with lowest MAC
-good choice for asthma patients as it does not induce coughing
-hyperventilation can speed induction in this case
-does not increase HR
Adverse: fulminant hepatic failure

Answer 2

Halothane

Question 3

minimal alveolar concentration required to prevent a response to a surgical incision in 50% of the population

Answer 3

Minimal Alveolar Concentration

Question 4

rapid induction with this inhaled anesthetic

good for asthma patients as it does not induce coughing

Answer 4

Sevoflurane (Ultane)

Question 5

rapid induction with this inhaled anesthetic
MAC >100
not good for use when needing to manipulate a fetus or for extraction of placenta, because it has little effect on uterine musculature

Answer 5

nitrous oxide

Question 6

Levels of depth of anesthesia

Answer 6

1. analgesia
2. excitement
3. surgical anesthesia
4. medullary depression

Question 7

actions of volatile anesthetics

Answer 7

• depress cardiac contractility and therefore MAP
• cause bronchodilation
• raise apneic threshold and decrease vent response to hypoxia
• decrease mucocilliary function in the airway
• decreased glomerular filtration rate
• relax uterine muscle (except NO)
• produce carbon monoxide

Question 8

blood:gas partition coefficient

Answer 8

lower numbers indicate less solubility in the blood and therefore faster induction