Parts of an Anesthesia Machine

Anesthesia Machine

Function of an Anesthesia Machine

to deliver gas anesthesia to the animal by means of a circuit of corrugated tubing

Gas cylinders

oxygen flowmeter

function of a flowmeter

Adjusts and regulates oxygen flow rate.

anesthetic vaporizer

function of the anesthetic vaporizer

liquid anesthetic into a gas at controlled levels

what are the two different types of vaporizers

Precision and non- precision

Oxygen flush valve

Function of the oxygen flush valve

allows oxygen to rapidly bypass the vaporizer and enter the breathing circuit containing no anesthetic agents

Fresh gas inlet

function of the fresh gas inlet

A low pressure hose that carries gas and/or gas mixed with anesthetic to the breathing circuit, preventing return of this gas to the previously mentioned components of the machine

Reservoir Bag (Rebreathing Bag)

Functions of the reservoir bag

- Fills as gas enters the breathing circuit and deflates as the patient breathes air in.

- Provides the ability to monitor respiration (depth and rate) and the assess endotracheal tube placement

Inhalation and Exhalation Flutter Valves

Function of the Inhalation and Exhalation Flutter Valves

allow passage of gas in only one direction

Pop-off valve

function of the pop-off valve

acts as a vent to allow excess pressures to leave the breathing circuit

(needs to be closed when manually breathing/bagging a patient or when checking machine for leaks)

****always make sure to REOPEN the pop-off valve if you close it- matter of life or death!

Carbon dioxide absorber

function of the Carbon dioxide absorber

to remove carbon dioxide from the exhaled air and deliver it back to the circuit for re-inhalation by the patient

how often should you change the granules in the Carbon dioxide absorber

every 6-8 hours

Pressure Manometer

Function of the Pressure Manometer

measures pressure within the circuit

what should the pressure not exceed on the manometer

20 cm H2O or mmHg

Scavenging System

Function of the Scavenging System

Removes the anesthetic agent from the waste gas which has left the circuit via the pop-off valve

Rebreathing system

what are the three different sizes of the rebreathing system

pediatric, adult, and large animal

Rebreathing system fuction

Recirculation of exhaled gases to the patient

what are the two different types of re-breathing systems

closed and semi-closed

non-rebreathing system

when is a non-rebreathing system used?

for smaller animals (

non-rebreathing function

- Little or no exhaled gas returned to the patient

- gas flows directly through the fresh gas inlet to the inlet hose for delivery to the patient

Laryngoscope

What are the two different types of Laryngoscope blades?

- Miller blades (straight)

- McIntosh blades (curved)

Anesthetic Mask

Function of Anesthetic Mask

used to administer oxygen and anesthetic gases to nonintubated patients

Anesthetic Chambers

Function of Anesthetic Chambers

Clear, aquarium-like boxes used to induce general anesthesia

What are the two different types of gas cylinders

- E tanks (small), attached directly to anesthetic machine

- H tanks (large), attached remotely to anesthetic machine

function of the Pressure-reducing valve of the compressed gas tank

Reduces outgoing pressure to a usable level

Tank Pressure Gauge

Function of the Tank Pressure Gauge

Indicates the pressure of gas remaining in a compressed gas cylinder

Function of the Line Pressure Gauge

Indicates pressure in the gas line between the pressure-reducing valve and flowmeter