Flashcards in Chpt. 4 - Review Questions Deck (20):
When the oxygen tank is half full, the tank pressure gauge will read approximately?
Nitrous oxide is present in the tank as a?
Liquid and a gas
The amount of oxygen an animal is receiving is indicated by the?
Flow meters that have a ball for reading the gauge should be read from the ... of the ball.
The most commonly recommended ratio for nitrous oxide and oxygen flow rate is?
33% oxygen and 67% nitrous oxide
The minimum size for the reservoir bag can be calculated as?
The flutter valves on an anesthetic machine help?
Control the direction of movement of gases
The pop-off valve is part of the anesthetic machine and helps?
Prevent excess gas pressure from building up within the breathing circuit
In small animal anesthesia, when the patient is bagged, the pressure manometer reading should not exceed?
20 cm H2O
True or false:
Rebreathing systems, when used with standard small animal corrugated breathing tubes, are best reserved for animals weighing more than 7 kg.
Rebreathing is determined primarily by the?
Fresh gas flow
Non-rebreathing systems should have maintenance flow rates that are?
Very high (at least 200 mL/kg/min)
The negative pressure relief valve is particularly important when?
There is a failure of oxygen flow through the system.
The tidal volume of an anesthetized animal is considered to be ... mL/kg of body weight.
A scavenging system is generally attached to?
The pop-off valve
A reservoir bag that is not moving well may indicate that?
- the ET tube is not in the trachea
- the animal has a decreased tidal volume
- there is a leak around the ET tube
The anesthetist will know when the granules in the carbon dioxide absorber have been depleted because the?
- granules will be brittle
- granules may change color
- granules may be hard
An increase in the depth of anesthesia can be achieved quickly by?
- having high oxygen flow rates
- having high vaporizer settings
The concentration of anesthetic delivered from a nonprecision vaporizer may depend on the?
- temperature of the liquid anesthetic
- flow of the carrier gas through the vaporizer
- back pressure
- type of anesthetic in the vaporizer