A client with an extrapyramidal reaction receives a prescription for diphenhydramine 35 mg IM. The medication is supplied as 50 mg/mL in a 1 mL prefilled single use syringe. How many mL should the nurse give? (Enter the numerical value only. If rounding is required, round to the nearest tenth.)
The Correct Answer is ["0.7"]
The nurse should administer 0.7 mL of diphenhydramine.
Here's the calculation:
Medication dosage: 35 mg (diphenhydramine)
Medication concentration: 50 mg/mL (given on the syringe label)
We need to find the volume (mL) containing the prescribed dose (35 mg) of diphenhydramine.
Volume to administer (mL) = Dose (mg) / Concentration (mg/mL)
Volume to administer (mL) = 35 mg / 50 mg/mL
Volume to administer (mL) = 0.7 mL (round to nearest tenth)
Therefore, the nurse should administer 0.7 mL of diphenhydramine
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["0.64"]
Explanation
Here's the calculation:
Prescribed dose: 40 mg methylprednisolone
Medication vial concentration: 125 mg per 2 mL (given on the vial label)
We need to find the volume (mL) containing the prescribed dose (40 mg) of methylprednisolone.
Calculation:
Concentration adjustment: The concentration is given in mg per 2 mL. To calculate the medication needed for the 40 mg dose, we need the concentration in mg/mL.
Concentration (mg/mL) = Total mg / Volume (mL)
Concentration (mg/mL) = 125 mg / 2 mL
Concentration (mg/mL) = 62.5 mg/mL
Volume to administer:
Volume to administer (mL) = Dose (mg) / Concentration (mg/mL)
Volume to administer (mL) = 40 mg / 62.5 mg/mL
Volume to administer (mL) = 0.64 mL (round to nearest hundredth)
Therefore, the nurse should administer 0.64 mL of methylprednisolone.
Correct Answer is ["8"]
Explanation
You can calculate the number of acyclovir tablets the nurse should administer every 24 hours using the following steps:
Daily Dosage: The medication is prescribed to be given every 6 hours, so to find the total daily dosage, we need to consider how many times it's administered in 24 hours:
Total Daily Doses = 24 hours / Dosage Frequency (every 6 hours)
Total Daily Doses = 24 hours / 6 hours/dose = 4 doses per day
Tablets per Dose: Since the prescribed dose is 800 mg and each tablet is 400 mg, we can find the number of tablets needed per dose:
Tablets per Dose = Prescribed Dose (mg) / Tablet Strength (mg/tablet)
Tablets per Dose = 800 mg / 400 mg/tablet = 2 tablets/dose
Total Tablets per Day: Now that we know the tablets needed per dose (2) and the total daily doses (4), we can find the total number of tablets for 24 hours:
Total Tablets per Day = Tablets per Dose x Total Daily Doses
Total Tablets per Day = 2 tablets/dose * 4 doses/day
Total Tablets per Day = 8 tablets
Therefore, the nurse should administer 8 tablets of acyclovir to the client every 24 hours.
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