Injections of gonadotropins (GnRH) are used to stimulate follicle development during in vitro fertilisation. A patient needs to be given a 2 mL injection containing 600 International Units (IU) of gonadotropin, but you are given a solution which contains 750 IU in 1 mL.Work out how much of this gonadotropin solution you will need to give the patient and then in the box below write how much 0.9% saline you need to add to this solution to make the injection volume up to 2 mL (Write your answer in mL with ONE decimal place and NO UNITS)ChatGPTChatGPT
Question
Injections of gonadotropins (GnRH) are used to stimulate follicle development during in vitro fertilisation. A patient needs to be given a 2 mL injection containing 600 International Units (IU) of gonadotropin, but you are given a solution which contains 750 IU in 1 mL.Work out how much of this gonadotropin solution you will need to give the patient and then in the box below write how much 0.9% saline you need to add to this solution to make the injection volume up to 2 mL (Write your answer in mL with ONE decimal place and NO UNITS)ChatGPTChatGPT
Solution
First, we need to calculate how much of the gonadotropin solution we need to give the patient.
The patient needs 600 IU of gonadotropin. The solution we have contains 750 IU in 1 mL. Therefore, to find out how many mL we need to give the patient, we divide the amount of gonadotropin the patient needs by the concentration of the solution:
600 IU / 750 IU/mL = 0.8 mL
This is the amount of the gonadotropin solution we need to give the patient.
Next, we need to calculate how much 0.9% saline we need to add to this solution to make the injection volume up to 2 mL.
The total volume of the injection needs to be 2 mL. We already have 0.8 mL of the gonadotropin solution. Therefore, to find out how much saline we need to add, we subtract the volume of the gonadotropin solution from the total volume:
2 mL - 0.8 mL = 1.2 mL
Therefore, we need to add 1.2 mL of 0.9% saline to the gonadotropin solution to make the injection volume up to 2 mL.
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