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Flashcards in Volatile anesthetics Deck (13):
1

How are volatile anesthetic doses expressed?

In percent concentration of inhaled gas

2

How do all volatiles effect SVR & myocardial function?

Vasodilation & myocardial depression

3

The most hemodynamically stable pharmacodynamics?

Nitrous Oxide

4

Isoflurane

Longest on/off but fewest cardiac side effects and least expensive, good for long cases

5

Desflurane

Shortest on/off but airway irritant

6

Sevoflurane

Causes the least airway irritation and can be used for induction of anesthesia

7

Nitrous Oxide - when to avoid?

Readily diffuses into closed air spaces. Should be avoided in situations where an increase in volume of pressure of an enclosed space is undesired - i.e. middle ear surgery, bowel obstruction, pneumothorax

8

MAC

Partial pressure of inhaled anesthetic which prevents movement in response to surgical incision in 50% of the population

9

Isoflurane MAC

1.15

10

Sevoflorane MAC

~2

11

Desflurane MAC

~6-7

12

Factors that affect MAC

Potency, age, concurrent drug administration, ethanol or illicit substance use, pregnancy

13

RSI

Given to minimize risk of intubation, avoid positive pressure ventilation, give succinylcholine & Propofol, hold cricoid pressure prior to induction