nurse is caring for a client who is to receive liquid medications via a gastrostomy tube. The client is prescribed phenytoin 250 mg. The amount available is phenytoin oral solution 25 mg/5 mL. How many mL should the nurse administer per dose? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["50"]
Calculation:
- Identify the ordered dose and available concentration
Ordered Dose: 250 mg
Available Concentration: 25 mg/5 mL
- Calculate the volume to administer
Volume to administer = (Ordered Dose ÷ Concentration) × Volume of Concentration
Volume to administer = (250 ÷ 25) × 5
Volume to administer = 10 × 5
= 50 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["0.8"]
Explanation
Calculation:
- Identify the ordered dose and available concentration
Ordered Dose: 100 mg
Available Concentration: 250 mg/2 mL
- Calculate the volume to administer
First determine mg per mL:
250 mg ÷ 2 mL = 125 mg/mL
Volume to administer = Ordered Dose ÷ Concentration
Volume to administer = 100 ÷ 125
= 0.8 mL
Correct Answer is ["1.5"]
Explanation
Calculation:
- Identify the ordered dose and tablet strength
Ordered Dose: 150 mg
Tablet Strength: 100 mg per tablet
- Calculate the number of tablets to administer
Number of Tablets = Ordered Dose ÷ Tablet Strength
Number of Tablets = 150 ÷ 100
= 1.5
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