tokens: METHODS : Ninety patients classified as American Society of Anesthesiologists physical status I or II who were scheduled for short gynecologic procedures under spinal anesthesia were randomly allocated to receive 2 . 5 ml 2 % lidocaine in 7 . 5 % glucose , 2 % prilocaine in 7 . 5 % glucose , or 0 . 5 % bupivacaine in 7 . 5 % glucose .