Final answer:
To provide a 35mg dose of Demerol with a supplied concentration of 50mg/mL, the calculated volume to administer is 0.7mL.
Step-by-step explanation:
The question pertains to calculating the volume of Demerol to administer to a patient. The prescribed dose is 35mg of Demerol to be given intramuscularly every 4 hours as needed (prn) for pain. With the medication supplied as Demerol at a concentration of 50mg/mL, we need to determine how many milliliters (mL) this dose equates to.
The formula to calculate the volume is:
Dose (mg) ÷ Concentration (mg/mL) = Volume (mL)
Using this formula:
35mg ÷ 50mg/mL = 0.7mL
Therefore, you will administer 0.7mL of Demerol to provide the required 35mg dose.