Infusion rates questions can be of different types – you may be asked to calculate the flow rate, syringe length, length of treatment, dose or number of drops. Which of the above would you like us to go through?
@Claire Reid A syringe driver contains 10mL of diamorphine hydrochloride (10mg/mL). The length of the syringe is 5cm and delivers at a rate of 7.5mm/hr. What is the amount of diamorphine delivered per minute? Give your answer in mcg/min
The syringe driver contains 10mL of a 10mg/mL solution.
10mL contains 100mg of diamorphine
Therefore 100mg in 5cm ( 5cm is the length of the syringe)
20mg in 1cm = 20mg in 10mm
cross multiply – to get 15mg in 7.5mm over 1 hour
15mg /60 minutes = will give you amount of drug delivered per minute = 0.25mg/min
Finally convert the units to mcg = 250mcg/min