The healthcare provider prescribes streptomycin 300 mg IM every 12 hours for a client with tuberculosis. The available vial is labeled, "Streptomycin 1 gram/2.5 mL." How many milliliters should the nurse administer? (Enter the numerical value only. If rounding is required, round to the nearest tenth.)
The Correct Answer is ["0.8"]
Desired dose in milligrams = 300 mg
Convert the available concentration to mg/mL:
Available concentration = 1 gram / 2.5 mL
= 1000 mg / 2.5 mL
= 400 mg/mL
Calculate the volume to administer in mL:
Volume to administer (mL) = Desired dose (mg) / Available concentration (mg/mL)
= 300 mg / 400 mg/mL
= 0.75 mL
Round to the nearest tenth:
Rounded volume = 0.8 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["1250"]
Explanation
Convert the child's weight from pounds to kilograms:
Weight (kg) = Weight (pounds) / 2.2 pounds/kg
= 55 pounds / 2.2 pounds/kg
= 25 kg
Calculate the total daily dose in milligrams:
Total daily dose (mg) = Prescribed dose (mg/kg/24 hours) x Child's weight (kg)
= 300 mg/kg/24 hours x 25 kg
= 7500 mg/24 hours
Determine the number of doses per day:
Number of doses per day = 24 hours / Frequency of doses (hours)
= 24 hours / 4 hours/dose
= 6 doses/day
Calculate the dose to administer for each dose:
Dose per administration (mg) = Total daily dose (mg) / Number of doses per day
= 7500 mg / 6 doses
= 1250 mg/dose
Correct Answer is ["0.5"]
Explanation
Desired dose = 2500 units
Available concentration = 5000 units/mL
Calculate the volume to administer:
Volume to administer (mL) = Desired dose (units) / Available concentration (units/mL)
= 2500 units / 5000 units/mL
= 0.5 mL
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