Inhalation General Anesthetics UPDATED
ACTUAL Exam Questions and
CORRECT Answers
General Anethesia - CORRECT ANSWER - -can be achieved with either injectable
anesthetics or inhalational (gas) anesthetics
Why Inhalational Anesthesia is Considered Safer than Injectable Anesthesia - CORRECT
ANSWER - 1. The depth of anesthesia can be more readily altered using gas anesthetic
-Can lighten up the depth of anesthesia faster
-Can only be made deeper with injectables. Cannot make them lighter until the drug is
metabolized
2. Since inhalant (inhalation) agents are excreted through the respiratory system, they are often
safer for animals with liver or kidney problems
3. Animals under inhalation anesthesia are breathing 100% oxygen
-Animals anesthetized with injectables are breathing room air
(20-21% O2)
4. Most patients under inhalation anesthetic are intubated and we know the advantages of that!
Disadvantages of Inhalational Anesthesia - CORRECT ANSWER - 1. Inhalation anesthesia
requires an anesthetic machine
-Cost and skills to use it
2. Induction is much slower with gas anesthetics than injectables
3. You have to deal with the waste anesthetic gas produced
-Safety issues to humans
Conclusion - CORRECT ANSWER - •Both inhalational and injectable general anesthetics
have their place in veterinary medicine
•Regardless of which one is used, there is an overall depressant effect on the cardiovascular,
respiratory, and thermoregulatory systems > monitoring is crucial!
, When was Nitrous Oxide Introduced - CORRECT ANSWER - -"laughing gas"
-1844
When Was Chloroform Introduced - CORRECT ANSWER - -Diethyl Ether
-1847
When Was Halothane Introduced - CORRECT ANSWER - -1956
When was Isoflurane Introduced - CORRECT ANSWER - -1981
When was Desflurane Introduced - CORRECT ANSWER - -1992
When was Sevoflurane Introduced - CORRECT ANSWER - -1994
Most Common Inhalation Drugs Used - CORRECT ANSWER - -Isoflurane
-Sevoflurane
-Desflurane
-Nitrous oxide
-Halothane is no longer available to buy
Characteristics of an Ideal Inhalation Agent - CORRECT ANSWER - 1. Minimal Toxicity
-Especially to the cardiovascular, respiratory, renal, hepatic, and nervous systems
2. No unwanted side effects
-Such as seizures, vomiting, nausea
3. Safe for personnel
-Minimal toxicity of waste gas vapors
ACTUAL Exam Questions and
CORRECT Answers
General Anethesia - CORRECT ANSWER - -can be achieved with either injectable
anesthetics or inhalational (gas) anesthetics
Why Inhalational Anesthesia is Considered Safer than Injectable Anesthesia - CORRECT
ANSWER - 1. The depth of anesthesia can be more readily altered using gas anesthetic
-Can lighten up the depth of anesthesia faster
-Can only be made deeper with injectables. Cannot make them lighter until the drug is
metabolized
2. Since inhalant (inhalation) agents are excreted through the respiratory system, they are often
safer for animals with liver or kidney problems
3. Animals under inhalation anesthesia are breathing 100% oxygen
-Animals anesthetized with injectables are breathing room air
(20-21% O2)
4. Most patients under inhalation anesthetic are intubated and we know the advantages of that!
Disadvantages of Inhalational Anesthesia - CORRECT ANSWER - 1. Inhalation anesthesia
requires an anesthetic machine
-Cost and skills to use it
2. Induction is much slower with gas anesthetics than injectables
3. You have to deal with the waste anesthetic gas produced
-Safety issues to humans
Conclusion - CORRECT ANSWER - •Both inhalational and injectable general anesthetics
have their place in veterinary medicine
•Regardless of which one is used, there is an overall depressant effect on the cardiovascular,
respiratory, and thermoregulatory systems > monitoring is crucial!
, When was Nitrous Oxide Introduced - CORRECT ANSWER - -"laughing gas"
-1844
When Was Chloroform Introduced - CORRECT ANSWER - -Diethyl Ether
-1847
When Was Halothane Introduced - CORRECT ANSWER - -1956
When was Isoflurane Introduced - CORRECT ANSWER - -1981
When was Desflurane Introduced - CORRECT ANSWER - -1992
When was Sevoflurane Introduced - CORRECT ANSWER - -1994
Most Common Inhalation Drugs Used - CORRECT ANSWER - -Isoflurane
-Sevoflurane
-Desflurane
-Nitrous oxide
-Halothane is no longer available to buy
Characteristics of an Ideal Inhalation Agent - CORRECT ANSWER - 1. Minimal Toxicity
-Especially to the cardiovascular, respiratory, renal, hepatic, and nervous systems
2. No unwanted side effects
-Such as seizures, vomiting, nausea
3. Safe for personnel
-Minimal toxicity of waste gas vapors
