smc-1104-30-Medication

Measurement, STD2 M7 2016 HSC 11 MC

The concentration of a drug in a certain medication is 100 mg / 5 mL. A patient is prescribed 2000 mg of the drug.

How much medication should be given to the patient?

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`C`

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`text(Volume required)`

`= 2000/100 xx 5`

`= 100\ text(mL)`

`=> C`

A patient requires 2400 mL of fluid to be delivered at a constant rate by means of a drip over 12 hours. Each mL of fluid is equivalent to 15 drops.

How many drops per minute need to be delivered? (2 marks)

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`50\ text(per minute)`

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`text(Fluid rate of delivery)`

`= 2400/12`

`= 200\ text(mL per hour)`

`= 200/60`

`= 3 1/3\ text(mL per minute)`

`text(S)text(ince each mL has 15 drops)`

`#\ text(Drops)`	`= 15 xx 3 1/3`
	`= 50\ text(per minute)`

A patient is to receive 1.8 L of pain killer medication by intravenous drip that will take 1.5 hours to administer.

Given 1 mL = 4 drops, calculate the amount of drops per minute the machine must be set on. (2 marks)

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`text(The machine must be set to 80 drops per minute.)`

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`text(Total drops required)`	`=1800 xx 4`
	`=7200\ text(drops)`

`text(Time)\ text{(in minutes)}`	`=1.5 xx 60`
	`= 90\ text(minutes)`

`text(Drops per minute)`	`=7200/90`
	`=80`

`:.\ text(The machine must be set to 80 drops per minute.)`