Question

name date directions: you are to read each problem carefully and answer what the question is asking you to do. please show your work in the space provided below. circle your answer. you have thirty minutes for 20 questions. 1. order: acetaminophen 1 g po tablets available: 500 mg. how many tablets? 2. order: magnesium hydroxide 30 ml po available: 400 mg/5 ml. how many mg will the patient receive? 3. order: azithromycin 300 mg po available: 200 mg/5 ml. how many ml? round to the nearest tenth. 4. order: antacid 1,200 mg po available: 400 mg/5 ml. how many ml? 5. order: naloxone 0.4 mg iv available: 0.4 mg/ml. how many ml? 6. order: enoxaparin 40 mg sq available: 100 mg/ml. how many ml? round to the nearest tenth.

Explanation:

Step1: Convert units to match

$1\ \text{g} = 1000\ \text{mg}$

Step2: Calculate tablet count

$\frac{1000\ \text{mg}}{500\ \text{mg/tablet}} = 2$

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Step1: Find volume ratio

$\frac{30\ \text{mL}}{5\ \text{mL}} = 6$

Step2: Calculate total mg

$6 \times 400\ \text{mg} = 2400\ \text{mg}$

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Step1: Set up proportion for mL

$\frac{300\ \text{mg}}{200\ \text{mg}} \times 5\ \text{mL}$

Step2: Compute and round

$\frac{3}{2} \times 5 = 7.5\ \text{mL}$

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Step1: Find dose ratio

$\frac{1200\ \text{mg}}{400\ \text{mg}} = 3$

Step2: Calculate total mL

$3 \times 5\ \text{mL} = 15\ \text{mL}$

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Step1: Calculate required mL

$\frac{0.4\ \text{mg}}{0.4\ \text{mg/mL}} = 1\ \text{mL}$

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Step1: Calculate raw mL value

$\frac{40\ \text{mg}}{100\ \text{mg/mL}} = 0.4\ \text{mL}$

Step2: Round to nearest tenth

$0.4\ \text{mL}$ (already rounded)

Answer:

1. 2 tablets
2. 2400 mg
3. 7.5 mL
4. 15 mL
5. 1 mL
6. 0.4 mL