NREMT Paramedic Cognitive ExamOperationsMedium
A paramedic is preparing to administer Dextrose 10% (D10) IV to an adult patient with altered mental status and a blood glucose level of 45 mg/dL. The standing order is to administer 12.5 grams of Dextrose. The D10 solution is supplied in a 250 mL bag. How many milliliters (mL) of D10 should the paramedic administer?
- A125 mL
- B25 mL
- C50 mL
- D75 mL
Show answer & explanationAnswer & explanation
Correct answer: A. 125 mL
Dextrose 10% (D10) means there are 10 grams of Dextrose per 100 mL of solution. To administer 12.5 grams, the calculation is (12.5 g / 10 g) * 100 mL = 1.25 * 100 mL = 125 mL.
Why the other options are wrong
- B. 25 mL would only be 2.5 grams of Dextrose (25 mL / 100 mL * 10g = 2.5g).
- C. 50 mL would be 5 grams of Dextrose (50 mL / 100 mL * 10g = 5g).
- D. 75 mL would be 7.5 grams of Dextrose (75 mL / 100 mL * 10g = 7.5g).
Dextrose Concentration Calculation
Calculating the volume of Dextrose solution needed to deliver a specific dose based on its percentage concentration.
- X% solution means X grams per 100 mL.
- Use dimensional analysis or ratio-proportion to solve.
- Always double-check calculations before administration.
Memory trick: Desired Over Have, Times Volume.