Inhalant Anesthetics Flashcards
1
Q
What are the benefits of using inhalant anesthetics? (2)
A
- Fewer adverse effects than injectable anesthetics
2. Anesthetic effect can be more easily controlled
2
Q
What are the factors affecting uptake of inhalant anesthetics into the bloodstream? (4)
A
- concentration
- degree of alveolar ventilation
- cardiac output
- abnormal alveoli
3
Q
What does solubility in blood mean? (2)
A
the more soluble a drug, the more drug you need to administer to get an anesthetic effect
4
Q
What is the order of anesthetic blood solubilities from most soluble to least soluble? (5)
A
- Methoxyflurane
- Halothane
- Isoflurane
- Sevoflurane
- Nitrous Oxide
5
Q
What is Minimum Alveolar Concentration (MAC)?
A
- Defined as the lowest concentration of an anesthetic agent that produces no painful response to painful stimuli in 50% of anesthetized patients
- Indicative of the potency of an anesthetic
6
Q
What are the inhalant anesthetics in order of least potent to most potent? (5)
A
- Nitrous Oxide (188%)
- Sevoflurane (2.36%)
- Isoflurane (1.2%)
- Halothane (0.87%)
- Methoxyflurane (0.23%)
7
Q
What are the hazards of waste anesthetic gases? (6)
A
- headache
- nausea
- fatigue
- irritability
- pruritis
- abortion
8
Q
What are the ways to reduce waste anesthetic gas exposure? (3)
A
- activated charcoal canister
- passive evacuation
- activated evacuation
9
Q
What are the technique practices for inhalant anesthetic use? (8)
A
- Use tight fitting masks
- Contain fresh gas in induction chamber until it is evacuated
- Perform endotracheal intubation when possible
- Keep the vaporizer turned off until the animal is connected
- Empty the rebreathing bag before disconnecting the animal
- Leave the animal connected after the vaporizer is turned off
- Keep the recovery area well ventilated
- Refill the vaporizers at the end of the day
