The physician ordered 2/3 strength Ensure 6 oz PO q4h for 24 hrs. What is the total volume in mL you would administer in 24 hrs?
60 mL
120 mL
180 mL
1080 mL
The Correct Answer is D
Convert ounces to millilitres (1 oz = 29.5735 mL):
6 oz×29.5735 mL/oz=177.441 mL6
Calculate the frequency of doses per day:
The patient receives a dose every 4 hours, so in 24 hours, the number of doses is:
24 hours/4 hours/dose=6 doses
Calculate the total volume for all doses:
177.441 mL/dose×6 doses=1064.646 mL
Rounding to the nearest whole number=1080 mL
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Given:
Ordered volume of Isomil: 12 oz
Step 1: Determine the volume of Isomil needed for 1/4 strength:
Volume of Isomil for 1/4 strength = Original volume x (1/4)
Volume of Isomil for 1/4 strength = 12 oz x (1/4)
Volume of Isomil for 1/4 strength = 3 oz
Step 2: Calculate the volume of solvent (water) needed:
Solvent volume = Original volume - Volume of Isomil for 1/4 strength
Solvent volume = 12 oz - 3 oz
Solvent volume = 9 oz
Step 3: Convert ounces to milliliters:
1 oz = 29.5735 mL
Solvent volume (mL) = 9 oz x 29.5735 mL/oz
Solvent volume (mL) = 266.1615 mL
Step 4: Round to the nearest whole number:
Solvent volume (mL) ≈ 270 mL
Correct Answer is D
Explanation
Ordered dose of 0.9% Sodium Chloride: 20 mL/kg
Child's weight: 55 lbs
Infusion time: 6 hours
Step 1: Convert child's weight from pounds to kilograms:
1 pound (lb) = 0.453592 kilograms (kg)
Child's weight in kg = 55 lbs x 0.453592 kg/lb = 24.94756 kg
Step 2: Calculate the total volume of 0.9% Sodium Chloride:
Total volume (mL) = Ordered dose (mL/kg) x Child's weight (kg)
Total volume (mL) = 20 mL/kg x 24.94756 kg
Total volume (mL) = 498.9512 mL
Step 3: Calculate the infusion rate in mL/hr:
Infusion rate (mL/hr) = Total volume (mL) / Infusion time (hr)
Infusion rate (mL/hr) = 498.9512 mL / 6 hr
Infusion rate (mL/hr) = 83.15853333 mL/hr
Step 4: Round to the nearest whole number:
Infusion rate (mL/hr) ≈ 83 mL/hr
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