Evaluation of the Safety and Efficacy of EXPAREL When Administered Into the TAP in Subjects Undergoing Cesarean Section

There will be two groups of subjects with approximately 40 subjects per group. Prior to the C-section, all subjects will receive single-shot spinal anesthesia (1.5 mL bupivacaine HCl 0.75% with dextrose 8.25%). Subjects in Group 1 (Standard of Care) will receive intrathecal morphine injection (e.g., Duramorph®) 0.2 mg in conjunction with the single-shot spinal anesthesia. No TAP block will be administered. Subjects in Group 2 (EXPAREL/TAP) will receive a bilateral TAP infiltration with a single 20 mL dose of EXPAREL 266 mg expanded in volume with 20 mL of normal saline for a total volume of 40 mL (20 mL infiltrated on each side of the abdomen).