Question

question 10 (4 points)
how many ml of a 20mg/ml syrup should be dispensed for a patient who is
prescribed 2 tsp, four times per day for 7 days? (4 pts)
220 ml
20 ml
120 ml
280 ml

question 11 (4 points)
a patient is to receive a 100 mg dose of gentamicin for sepsis. the medication is
available in an 80-mg/ml vial. how many ml will you prepare for a single dose? (4
pts)
1.25 mg
125 ml
1.25 ml
12.5 ml

question 12 (4 points)
a physician orders amoxil 62.5 mg po tid for an infant. the drug is available in a
125mg/5ml concentration. how many ml will the infant take per dose? (4 pts)
2.5 ml

Explanation:

Question 10

Step1: Convert tsp to mL (1 tsp = 5 mL)

2 tsp = \( 2\times5 = 10 \) mL per dose.

Step2: Calculate daily volume (4 times a day)

Daily volume = \( 10\times4 = 40 \) mL.

Step3: Calculate total volume for 7 days

Total volume = \( 40\times7 = 280 \) mL.

Step1: Use the formula \( \text{Volume (mL)} = \frac{\text{Dose (mg)}}{\text{Concentration (mg/mL)}} \)

Given dose = 100 mg, concentration = 80 mg/mL.

Step2: Substitute values into the formula

\( \text{Volume} = \frac{100}{80} = 1.25 \) mL.

Step1: Let \( x \) be the volume in mL. Set up a proportion: \( \frac{125\,\text{mg}}{5\,\text{mL}}=\frac{62.5\,\text{mg}}{x\,\text{mL}} \)

Step2: Cross - multiply: \( 125x = 62.5\times5 \)

Step3: Solve for \( x \): \( x=\frac{62.5\times5}{125}=\frac{312.5}{125} = 2.5 \) mL.

Answer:

280 mL (the option D. 280 mL)

Question 11