A nurse is preparing to administer 0.9% sodium chloride 250 mL IV to infuse over 4 hr to a school-age child. The nurse should ensure the IV pump is set to deliver how many mL/hr? (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 ["63"]
Step-by-step calculation:
IV rate= Total volume/Time (hours)
250/4 =62.5 mL/hr
Round the answer off: 63L/hr
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["1.9"]
Explanation
Identify the given information:
Dose of nafcillin: 25 mg/kg/day
Weight of the child: 83 lb
Concentration of nafcillin injection: 250 mg/mL
Convert the child's weight from pounds to kilograms:
1 lb ≈ 0.453592 kg
Calculate the total daily dose of nafcillin in mg:
Total daily dose = Dose/kg/day x Weight (kg)
Substitute the values:
Total daily dose = 25 mg/kg/day x 83 lb x (0.453592 kg/1 lb)
Total daily dose ≈ 936.82 mg
Calculate the dose per dose (every 12 hours):
Dose per dose = Total daily dose / 2
Substitute the values:
Dose per dose = 936.82 mg / 2
Dose per dose ≈ 468.41 mg
Calculate the volume of nafcillin injection to be administered:
Volume = Dose per dose (mg) / Concentration (mg/mL)
Substitute the values:
Volume = 468.41 mg / 250 mg/mL
Volume ≈ 1.87 mL
Round the answer to the nearest tenth:
Volume ≈ 1.9 mL
Correct Answer is ["0.45"]
Explanation
Identify the given information:
Dose of tobramycin: 2.5 mg/kg/day
Weight of the child: 48 lb
Concentration of tobramycin injection: 40 mg/mL
Convert the child's weight from pounds to kilograms:
1 lb ≈ 0.453592 kg
Calculate the total daily dose of tobramycin in mg:
Total daily dose = Dose/kg/day x Weight (kg)
Substitute the values:
Total daily dose = 2.5 mg/kg/day x 48 lb x (0.453592 kg/1 lb)
Total daily dose ≈ 54.43 mg
Calculate the dose per dose (every 8 hours):
Dose per dose = Total daily dose / 3
Substitute the values:
Dose per dose = 54.43 mg / 3
Dose per dose ≈ 18.14 mg
Calculate the volume of tobramycin injection to be administered:
Volume = Dose per dose (mg) / Concentration (mg/mL)
Substitute the values:
Volume = 18.14 mg / 40 mg/mL
Volume ≈ 0.45 mL
Round the answer to the nearest hundredth:
Volume ≈ 0.45 mL
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