Patients were randomly assigned to one of three parallel groups in a 1:1:1 ratio, to receive either: treatment transversus abdominis plane (TAP) block and placebo local injection, placebo TAP block and treatment local injection, or treatment TAP block and treatment local injection. This study took place at Saint Barnabas Medical Center in Livingston, New Jersey from May 2011 to October 2013. Patients were recruited from the offices of ten different gynecological surgeons in private practice. Two of the surgeons were gynecological oncologists, and the remainder were general obstetricians/gynecologists that perform minimally invasive gynecological surgery. The TAP blocks were administered by one of four anesthesiologists.