A nurse is teaching a client who has a new prescription for ibuprofen oral suspension 200 mg PO. Available is ibuprofen 100 mg/5 mL. How many tsp should the nurse instruct the client to take? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
The correct answer and Explanation is :
To determine how many teaspoons (tsp) the client should take of ibuprofen oral suspension to achieve a dose of 200 mg, we first need to understand the concentration of the available suspension. The provided ibuprofen concentration is 100 mg per 5 mL.
Step 1: Calculate the volume needed for 200 mg
- Determine how many mL are needed for 200 mg:
[
\text{Concentration} = \frac{100 \text{ mg}}{5 \text{ mL}} \quad \text{or} \quad \frac{100 \text{ mg}}{1 \text{ mL}} = 20 \text{ mg/mL}
]
Now we can set up the proportion to find the volume (V) needed for 200 mg:
[
20 \text{ mg/mL} = \frac{200 \text{ mg}}{V \text{ mL}}
]
Rearranging gives:
[
V = \frac{200 \text{ mg}}{20 \text{ mg/mL}} = 10 \text{ mL}
]
Step 2: Convert mL to teaspoons
Next, we convert mL to teaspoons. The conversion factor is:
- 1 tsp = 5 mL.
Now, we can convert the required 10 mL into teaspoons:
[
\text{Volume in tsp} = \frac{10 \text{ mL}}{5 \text{ mL/tsp}} = 2 \text{ tsp}
]
Conclusion
The nurse should instruct the client to take 2 tsp of ibuprofen oral suspension to achieve the prescribed dose of 200 mg.
Rounding
Since the instructions specify rounding to the nearest whole number, we note that 2 is already a whole number. Additionally, the instruction specifies using a leading zero if applicable, but it does not apply here since 2 does not require a leading zero.
Thus, the final answer is 2 tsp.