Airway Management Flashcards
Name 5 reasons why airway management is important
- Allows delivery of oxygen and inhaled anaesthetic gas
- Allows scavenging and environmental protection
- Allows IPPV
- Allows ventilator support in the ICU
- Protects the airway (reduced aspiration)
Name the 2 different sources of oxygen
Cylinders
Oxygen concentrators
What equipment do you use to check how much to inflate the cuff on an ET tube by
Manometer
What extra step do you take when intubating cats
Spray lidocaine
Name a positive and negative of armoured ET tubes
+ve - resist kinking
-ve - contraindicated in MRI scans
What are Cole ET tubes and when are they most commonly used
The shoulder of the tube should impact in the larynx to create an airtight seal
Useful for exotic animal anaesthesia
Name 3 types of ET tubes
Cole
Murphy
Magill
Give some disadvantages of red rubber ET tubes (x4)
Crack over time
Prone to kinking
Cannot visualise any blockages
Low volume high pressure cuff => tracheal trauma
Give one advantage of red rubber tubes
Provide a good seal (with the low volume high pressure cuff)
Give some advantages of PVC and silicone ET tubes
Silicone is repairable
Less prone to kinking
Non-irritant
Allows visualisation of any blockages
High volume low pressure cuff - less risk of tracheal trauma
In what species are laryngeal mask airways (LMA’s) used most in
Rabbits
Is IPPV possible with laryngeal mask airways (LMAs)
Yes
What should you do to oxygen before administering pre-oxygenation and why
Humidify the oxygen - otherwise it is very drying to the mucous membranes
Why are low volume high pressure cuffs not ideal
Exert pressure on a small area of the tracheal mucosa
Can lead to tracheitis or pressure necrosis
This can lead to tracheal strictures or in extreme cases tracheal rupture
How to avoid tracheaitis or pressure necrosis from ET tubes
Inflate carefully (use a manometer)
Always disconnect the animal from the breathing system when changing position
