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 ["1"]
Explanation
Calculate the size of each of the three equal doses:
Dose per administration (mg) = Total daily dose (mg) / Number of doses per day
= 1200 mg / 3 doses
= 400 mg
Identify the amount of magnesium oxide in each capsule:
Amount per capsule = 400 mg
Calculate the number of capsules to administer with each dose:
Number of capsules per dose = Desired dose per administration (mg) / Amount per capsule (mg/capsule)
= 400 mg / 400 mg/capsule
= 1 capsule
Correct Answer is ["83"]
Explanation
Total volume to be infused = 1 litre
Convert the total volume from liters to milliliters:
Total volume (mL) = Total volume (liters) x 1000 mL/litre
= 1 litre x 1000 mL/litre
= 1000 mL
Identify the infusion time in minutes:
Infusion time (minutes) = Infusion time (hours) x 60 minutes/hour
= 12 hours x 60 minutes/hour
= 720 minutes
Drop factor of the IV administration set = 60 gtt/mL
Calculate the total number of drops to be infused:
Total drops = Total volume (mL) x Drop factor (gtt/mL)
= 1000 mL x 60 gtt/mL
= 60000 gtt
Calculate the infusion rate in drops per minute (gtt/min):
Infusion rate (gtt/min) = Total drops / Infusion time (minutes)
= 60000 gtt / 720 minutes
≈ 83.33 gtt/minute
Round to the nearest whole number:
Rounded infusion rate = 83 gtt/minute
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