Inhalant Anesthetics I
Term describing the potency of the agent
What is MAC?
Vaporizer setting for a moderate surgical plane using MAC as a guideline
What is 1.5 x MAC?
Numerical value of the tidal Volume (VT) in most anesthetized patients
What is 10-15 ml/kg?
Area of lung in which ventilation takes place
What is/are alveoli?
Most common inhalant anesthetics today
What are isoflurane and sevoflurane?
Definition of MAC
This may form if isoflurane reacts with exhausted soda lime
Interior diameter of the mainstem bronchi is an example of this
What is anatomic dead space?
Condition that results from prolonged compression of the "down" lung.
What is atelectasis?
Require precision vaporizers
What are Isoflurane and Sevoflurane?
An agent with the lowest solubility or partition coefficient provides this regarding induction and recovery time
What is shortest induction and recovery time?
Effect of a reduction in cardiac output on speed of induction (increase or decrease speed of induction?)
What is increases speed of induction?
Does not have an effect on the speed of anesthetic induction with an inhalant anesthetic agent
What is MAC?
Hypotension observed with use of isoflurane is primarily due to _____
What is excessive anesthetic depth?
What is solubility?
Size of mac value maintaining the patient under anesthesia with the lowest alveolar concentration
What is the smallest MAC value?
These inhalant anesthetics have faster induction and recovery times based on their solubility or partition coefficient (low or high value?)
What are inhalants with a low solubility or partition coefficient?
Inhalant anesthetics diffuse across ________________ to enter the circulation
What are the alveolar membranes?
Agents with lower MAC values are associated with greater _____.
What is potency?
Determines the speed at which the inhalant agent gets from the lungs to the circulatory system.
What is blood-gas partition coefficient?
An agent with the highest solubility or partition coefficient provides this regarding induction and recovery time
What is longest induction and recovery time?
Of the following most likely to cause hypotension: acepromazine/atropine/butorphanol IM for pre-medication; ketamine and propofol IV for induction; isoflurane maintenance
What is isoflurane?
Tendency of a liquid to evaporate
What is vapor pressure?
Inhalant agents with high blood-gas partition coefficients are associated with _____ induction speeds.
What is slower?
Describes a protocol that primarily relies on Isoflurane
What is dangerous?