LISA is an AI model, trained on a robust dataset from two specialized Plastic Surgery centers, that demonstrated high accuracy in predicting blood loss, with a mean absolute error of 76.97 cc and a level of precision in prediction of 94%. This enables surgeons to better prepare for and manage the intraoperative and postoperative phases of the procedure. LISA integrates the most recent advances in perioperative care from body contouring surgery with an accurate algorithm that allows the surgical team to feel safe during the procedure, by ascertaining safe volumes for lipoaspiration, maintenance, and replenishment.