A patient is prescribed 80 mg of Tramadol Hydrochloride injection. The stock dose is 50mg / 2 mL. What volume will you require?

Question

Prescription 80mg
_________ x ml = ? ___________ x 2 ml =
Stock 50mg

80mg
___________ x 2 ml =
50mg

answer?

Answer 1

To determine the volume of the Tramadol Hydrochloride injection required to administer 80 mg, we can set up a proportion based on the concentration of the stock solution.

We know:

• Stock solution: 50 mg in 2 mL
• Desired dose: 80 mg

Using the formula: \[ \text{Volume required (mL)} = \left(\frac{\text{Desired Dose (mg)}}{\text{Stock Concentration (mg/mL)}}\right) \]

First, we find the stock concentration in mg/mL: \[ \text{Stock Concentration} = \frac{50 \text{ mg}}{2 \text{ mL}} = 25 \text{ mg/mL} \]

Now, we can find the volume needed for 80 mg: \[ \text{Volume required} = \left(\frac{80 \text{ mg}}{25 \text{ mg/mL}}\right) = 3.2 \text{ mL} \]

So, the required volume is 3.2 mL.