If a surgical technologist refilled a 10 cc syringe with local anesthetic three times and there was 5 cc left, how much anesthetic was used?

To determine the total amount of local anesthetic used, it is crucial to consider the volume of the syringe and the quantity remaining after refills. Each time the syringe was refilled, it was filled with 10 cc of anesthetic. Since the surgical technologist filled the syringe three times, the total volume of anesthetic that was introduced into the syringe is 3 times 10 cc, equaling 30 cc.

However, since there are 5 cc remaining in the syringe after these refills, this remaining volume must be subtracted from the total volume introduced. Therefore, to find the amount of anesthetic that was used, you would perform the following calculation:

Total anesthetic introduced: 30 cc

Remaining anesthetic: 5 cc

Amount used: 30 cc - 5 cc = 25 cc

Thus, the surgical technologist used 25 cc of local anesthetic overall. Given the options presented, the calculated amount of anesthetic used aligns with choice B, not D. It seems there may have been an error regarding the correct answer choice.