Inhalers, injections and patches

Question 1

What type of breath actuated inhalers are Easibreathe and Autohaler and how are they different to a standard MDI inhaler?

Answer 1

Breath actuated MDIs are automated, they work in response to inhalation which triggers the actuation of the device and release a dose.
They differ from standard MDIs by responding to inspiratory flow, in which the user is required to lift the lever before use then inhale, as opposed to coordinating breath and pressing down canister

Question 2

Which 2 patient groups may benefit from using an easibreathe or autohaler and why?

Answer 2

Children and elderly as they may find coordination difficult in a standard MDI

Question 3

What is the function of the release slide on the bottom of the autohaler and when should the patient use this?

Answer 3

Releases a dose but is only to be used to test the inhaler/if it’s a new inhaler

Question 4

Do the inhalers require a propellant and why?

Answer 4

Yes

Actuation results in the evaporation of propellant to form droplets to be inhaled in the lungs

Question 5

What are Scopaderm patches used for and how long do they last for, why is this useful for the indication?

Answer 5

Travel sickness - last for up to 3 days which is good as it covers after you have travelled - for long-haul trips, boat trips etc.

Question 6

How long will it take for the Scopaderm patches to be effective and why?

Answer 6

5-6 hours - as it is transdermal and takes time to reach systemic circulation at correct conc

Question 7

What is the appearance of the patch and what is the method used for the delivery of the drug in the patch?

Answer 7

Small discrete, transdermal patch - rate limiting membrane

Question 8

Is it possible to swim or bathe while wearing the patch and what happens if it falls off?

Answer 8

It is possible - if it falls off, apply a new one