Calculate the dosage using the label below. Round to the nearest tenth place. Order: Celestone, Soluspan (betamethasone) 12 mg IM q24 hr. for 2 doses. Available
0.5 mL sub-cut
1 mL Stat
4 mL IV
2 mL IM
The Correct Answer is D
Rationale:
Ordered Dose:
The prescription is for 12 mg of Celestone Soluspan (betamethasone) IM every 24 hours for 2 doses.
Available Dose (from label): The vial contains 6 mg/mL.
Dosage Calculation: Using the formula:
Volume to administer (mL) = Available concentration (mg/mL) / Ordered dose (mg)
Volume to administer = 12mg / 6mg/mL = 2 mL
Administration Route:
The order specifies IM (intramuscular) administration, aligning with the label instructions.
Thus, 2 mL IM is the correct dosage to administer.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Given:
Ordered dose of amoxicillin: 300 mg
Concentration of amoxicillin oral solution: 250 mg/5 mL
Step 1: Set up the proportion:
Desired dose (mg) / Volume to administer (mL) = Concentration (mg/mL)
Step 2: Substitute the values:
300 mg / Volume = 250 mg/5 mL
Step 3: Solve for the unknown volume:
Volume = 300 mg / (250 mg/5 mL)
Volume = 300 mg x (5 mL / 250 mg)
Volume = 6 mL
Correct Answer is D
Explanation
Given:
Ordered dose of diphenhydramine: 25 mg
Available diphenhydramine: 12.5 mg/5 mL
Step 1: Set up the proportion:
Desired dose (mg) / Volume to administer (mL) = Concentration (mg/mL)
Step 2: Substitute the values:
25 mg / Volume = 12.5 mg/5 mL
Step 3: Solve for the unknown volume:
Volume = 25 mg / (12.5 mg/5 mL)
Volume = 25 mg x (5 mL / 12.5 mg)
Volume = 10 mL
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