Figure 1: MBP at each time point (T1, basic mean blood pressure, 10 min after arriving at the operating room; T2, 5 min after spinal anesthesia; T3, 10 min after spinal anesthesia; T4, 5 min after drug administration; T5, 10 min after drug administration; T6, 30 min after drug administration; T7, 60 min after drug administration). MBP: mean blood pressure; Group FT: the flurbiprofen axetil and tramadol group; Group C: the control group.