What is the total amount of contrast medium used during a laparoscopic cholecystectomy when the surgeon uses two 20cc syringes of 50/50 contrast medium?

In a laparoscopic cholecystectomy, if the surgeon utilizes two 20cc syringes of a 50/50 contrast medium, the total amount of contrast medium can be calculated by adding the volume of both syringes. Each syringe contains 20cc, so with two syringes, the total volume is 20cc + 20cc, resulting in a total of 40cc of contrast medium used for the procedure. Thus, the understanding of volume addition in this context accurately leads to the conclusion that the total amount used is 40cc.