Airway Management

Question 1

reasons for airway management

Answer 1

delivery of oxygen and inhaled anaesthetic gas
scavenging and environmental protection
IPPV
protect airway - reflux, debris

Question 2

endotracheal tube

Answer 2

cuffed or uncuffed
murphy, macgill or cole
different sizes

red rubber - kinks and cracks, can’t visualise blockages, low volume high oressure so good seal but prone to causing trauma

PVC/silicone - disposible, less prone to kinks, non irritant, high volume low pressure so less trauma, can see inside

armoured - wire in wall, less kinking, hard to place, can’t reduce dead space, can’t use in MRI

cole pattern - pediatric, gas tight seal but dislodges easily if move, good for exotics

Question 3

supraglottic airway devices

Answer 3

v gels or laryngeal mask
rabbits and cats
can use for IPPV

Question 4

face masks

Answer 4

lots of dead space
transparent better
care to make good seal

Question 5

tracheostomy tube

Answer 5

in through neck –> trachea

Question 6

airway complications

Answer 6

high pressure low volume seals - pressure on tracheal mucosa
pressure necrosis or tracheitis
tracheal rupture
need to detach when moving
inflate carefully
overinsertion
contamination - clean and store well