nebulisers Flashcards
how does it work
converts solution of drug into aerosol for inhalation via face mask or mouthpiece
what is the advantage of using a nebuliser for treatment when compared to standard inhalers
delivers higher doses of drug to airways than is usual with standard inhalers
you would use nebuliser to deliver pentamidine isetionate for ….
prophylaxis of pneumocystis pneumonia
particles of the following mass median diameter are deposited into the airways
1-5 microns
particles of the following size are needed for alveolar deposition
1-2 microns
true or false - the type of nebuliser is chosen according to deposition required and according to viscosity of solution
true
proportion of nebuliser solution that reaches the lungs depends on ….
type of nebuliser
the extent to which the nebulised solution is deposited into the airways or alveoli depends on the following 3
particle size
pattern of breath inhalation
lung disease severity
can patients treat acute attacks with nebuliser
not without also seeking medical help
which ones are used more often - jet or ultrasonic nebulisers
jet
what is hypercapnia
high levels of CO2 in blood
who is at risk of hypercapnia (high levels of CO2 in blood)
COPD
should you give nebuliser driven by oxygen to pt with COPD
no
COPD pt are at risk of hypercapnia (high levels of CO2 in blood)
oxygen can be dangerous so nebuliser should be driven by air
why may it be dangerous to give nebuliser driven by oxygen to pt with COPD
they are at risk of hypercapnia (high levels of CO2 in blood)
so needs to be driven by air
jet nebulisers can be driven by the following 2
oxygen
air
most jet nebulisers require an optimum gas flow rate of ….. l/min
6-8L/min
can you use domiciliary oxygen cyclinders with jet nebuliser
they do not provide adequate flow rate
therefore electrical compressor is required for domiciliary use
how do some jet nebulisers increase efficiency
some are able to increase drug output during inspiration
important advice about tubing
need to use the correct grade of tubing when connecting to a nebuliser to a medical gas supply or compressor
how to ultrasonic nebulisers work
produce aerosol by ultrasonic vibration of drug solution
therefore do not need gas flow
true or false - ultrasonic nebulisers require gas flow
false. they produce aerosol by ultrasonic vibration of drug solution
therefore do not need gas flow
ultrasonic nebuliser is not suitable for some drugs e.g. these 2
dornase alfa (used in CF)
nebulised suspensions
how do vibrating mesh nebulisers work
produce aerosol of consistently small sized particles by using the vibration of the mesh to act as a pump to push the liquid drug through the holes of the mesh
which nebuliser is small, silent and portable
vibrating mesh nebuliser
which nebuliser can be battery operated
vibrating mesh nebuliser
do vibrating mesh nebulisers require compressed air source
no
