Final answer:
To administer the ordered 250mg of ceftriaxone from a 500mg/mL concentration, 0.5mL of the medication should be given, corresponding to option D) 0.5mL.
Step-by-step explanation:
The physician orders 250mg of ceftriaxone and the concentration given is 500mg/mL. To calculate the volume of medication to administer, you use the formula v = d / c, where v is the volume in milliliters, d is the dose in milligrams, and c is the concentration in milligrams per miter.
To administer 250mg of ceftriaxone with a concentration of 500mg/mL, 0.5mL of the medication will be administered, which corresponds to answer D) 0.5mL.
In this scenario, you have been ordered to administer 250mg of ceftriaxone. The available vial contains the medication at a concentration of 500mg/mL. To find the volume of the medication you need to administer, you divide the ordered dose by the concentration of the drug.
The calculation is straightforward:
- Dose ordered (d): 250mg
- Concentration of solution (c): 500mg/mL
- Volume to administer (v): d / c
Plugging the values into the formula:
v = 250mg / 500mg/mL
v = 0.5mL
This calculation is crucial as medical and pharmaceutical personnel must ensure accurate dosages to avoid harmful consequences. It demonstrates the importance of understanding concentration measurements and dilutions in the preparation of medications.