A nurse is preparing to administer 0/9% sodium chloride (0.9% NaCl) 20ml/kg IV tp infuse over 6 hr to a school-age child who weighs 55 lbs. The nurse should set the IV pump to deliver how many ml/hr? (Round to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
8 mL/hr
8.3 mL/hr
83.3 mL/hr
83 mL/hr
The Correct Answer is D
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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Related Questions
Correct Answer is A
Explanation
Given:
Ordered dose of Heparin: 15 units/kg/hr
Patient weight: 82 kg
Total Heparin in solution: 25,000 units
Volume of solution: 250 mL
Step 1: Calculate the total dose of Heparin in units/hr:
Total dose (units/hr) = Ordered dose (units/kg/hr) x Patient weight (kg)
Total dose (units/hr) = 15 units/kg/hr x 82 kg
Total dose (units/hr) = 1230 units/hr
Step 2: Calculate the concentration of Heparin in the solution:
Concentration (units/mL) = Total Heparin (units) / Volume of solution (mL)
Concentration (units/mL) = 25,000 units / 250 mL
Concentration (units/mL) = 100 units/mL
Step 3: Calculate the infusion rate in mL/hr:
Infusion rate (mL/hr) = Total dose (units/hr) / Concentration (units/mL)
Infusion rate (mL/hr) = 1230 units/hr / 100 units/mL
Infusion rate (mL/hr) = 12.3 mL/hr
Correct Answer is A
Explanation
Convert the dosage to mcg per hour:
15mcg/min×60min/hr=900mcg/hr15
Convert the available nitroglycerin concentration to mcg/mL:
25mg=25,000mcg
Theconcentrationis(25,000mcg/250mL)=100mcg
Calculate the flow rate in mL per hour using the dosage and concentration:
Flowrate(mL/hr)=(900mcg/hr100mcg/mL)=9mL/hr
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