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Nur 324 medication calculation Proctored exam
Total Questions : 20
Showing 10 questions, Sign in for moreThe client has an order for glyburide 2.5 mg orally. The medication available is 2.5 mg per scored tablet. How many tablets will the nurse administer? (If needed, round to the nearest whole number.)
Explanation
Calculation:
- Identify the ordered dose and available strength
Ordered Dose: 2.5 mg
Available Strength: 2.5 mg/tablet
- Calculate the number of tablets
Tablets = Ordered Dose ÷ Available Strength
Tablets = 2.5 ÷ 2.5
= 1
The healthcare provider ordered metronidazole 500 mg in 250 mL to infuse over 60 minutes. The available tubing delivers 20 gtt/mL. At what rate will the nurse set the infusion? (If needed, round to the nearest whole number.)
Explanation
Calculation:
- Identify the volume, time, and drop factor
Volume = 250 mL
Time = 60 min
Drop Factor = 20 gtt/mL
- Calculate the flow rate in gtt/min
Flow Rate = (Volume × Drop Factor) ÷ Time
Flow Rate = (250 × 20) ÷ 60
Flow Rate = 5000 ÷ 60
Flow Rate ≈ 83.33
- Round to the nearest whole number
= 83 gtt/min
The client has an order for potassium chloride 17.5 mEq twice a day orally. The medication available is 20 mEq/15 mL. How many mL will the nurse administer for each dose? (If needed, round to the nearest tenth.)
Explanation
Calculation:
- Identify the ordered dose and available concentration
Ordered Dose: 17.5 mEq
Available Concentration: 20 mEq/15 mL
- Calculate the volume to administer
Volume (mL) = (Ordered Dose ÷ Concentration) × Quantity
Volume (mL) = (17.5 ÷ 20) × 15
Volume (mL) = 0.875 × 15
Volume (mL) = 13.125
- Round to the nearest tenth
= 13.1 mL
The client has an order for erythromycin 500 mg orally. The medication available is 500 mg/5 mL. How many mL will the nurse administer? (If needed, round to the nearest whole number.)
Explanation
Calculation:
- Identify the ordered dose and available concentration
Ordered Dose: 500 mg
Available Concentration: 500 mg/5 mL
- Calculate the volume to administer
Volume (mL) = Ordered Dose ÷ Concentration × Quantity
Volume (mL) = 500 ÷ 500 × 5
Volume (mL) = 1 × 5
= 5
The client has an order for packed red blood cells 375 mL to infuse over 4 hours. At what rate will the nurse set the infusion? (If needed, round to the nearest whole number.)
Explanation
Calculation:
To determine the IV infusion rate:
Rate (mL/hr) = Total Volume ÷ Time (hours)
Rate = 375 mL ÷ 4 hr
Rate = 93.75 mL/hr
- Rounded to the nearest whole number
= 94 mL/hr
The client has an order for potassium chloride 40 mEq in 1 L D5 0.9% sodium chloride to infuse at 1 mEq/hr. At what rate will the nurse set the infusion? (If needed, round to the nearest whole number.)
Explanation
Calculation:
- Identify the total volume and total mEq:
Total potassium = 40 mEq
Total volume = 1,000 mL
- Determine the concentration:
Concentration = 40 mEq ÷ 1,000 mL
= 0.04 mEq/mL
- Determine the infusion rate for 1 mEq/hr:
Rate (mL/hr) = Desired dose ÷ Concentration
= 1 ÷ 0.04
= 25 mL/hr
The healthcare provider ordered 800 mL of 0.45% sodium chloride to infuse over 8 hours. The available tubing delivers 15 gtt/mL. At what rate will the nurse set the infusion? (If needed, round to the nearest whole number.)
Explanation
Calculation:
- Identify the total volume, time, and drop factor
Total Volume = 800 mL
Time = 8 hours × 60 min/hr
= 480 min
Drop factor = 15 gtt/mL
- Use the formula for manual IV flow rate:
Flow rate (gtt/min) = (Volume × Drop factor) ÷ Time
Flow rate = (800 × 15) ÷ 480
Flow rate = 12,000 ÷ 480
= 25 gtt/min
The client has an order for rosuvastatin 40 mg orally. The medication available is 20 mg per scored tablet. How many tablets will the nurse administer? (If needed, round to the nearest whole number.)
Explanation
Calculation:
- Identify the ordered dose and available tablet strength
Ordered Dose: 40 mg
Available Tablet: 20 mg per tablet
- Calculate the number of tablets
Number of tablets = Ordered Dose ÷ Tablet Strength
Number of tablets = 40 ÷ 20
= 2
The client has an order for amoxicillin 750 mg orally. The medication available is 250 mg/5 mL. How many mL will the nurse administer? (If needed, round to the nearest whole number.)
Explanation
Calculation:
- Identify the dose ordered and concentration available
Ordered dose = 750 mg
Available concentration = 250 mg/5 mL
- Use the formula:
Volume to administer (mL) = (Ordered dose ÷ Available dose) × Volume
Volume = (750 ÷ 250) × 5
Volume = 3 × 5
= 15 mL
The client has an order for ceftriaxone 225 mg intramuscularly every 12 hours. The medication available is 0.5 g/mL. How many mL will the nurse administer for each dose? (If needed, round to the nearest tenth.)
Explanation
Calculation:
- Identify the ordered dose and available concentration
Ordered Dose: 225 mg
Available Concentration: 0.5 g/mL
= 500 mg/mL
- Calculate the volume to administer
Volume to administer = Ordered Dose ÷ Concentration
Volume to administer = 225 ÷ 500
Volume to administer = 0.45 mL
- Round to the nearest tenth
= 0.5 mL
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