A nurse is preparing to administer tobramycin 2.5 mg/kg/day IM divided in equal doses every 8 hr to a school-age child who weighs 48 lb. Available is tobramycin injection 40 mg/mL. How many mL should the nurse administer per dose? (Round the answer to the nearest hundredth. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["0.45"]
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
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["3.5"]
Explanation
Identify the given information:
Dose of pantoprazole: 7 mg
Concentration of pantoprazole: 2 mg/mL
Calculate the volume of pantoprazole to be administered:
Volume = Dose (mg) / Concentration (mg/mL)
Substitute the values:
Volume = 7 mg / 2 mg/mL
Calculate the result:
Volume = 3.5 mL
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
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.