Fig. 3

Box plots of NRS scores within 48 h after surgery, intraoperative MAP and HR and their increment rates during skin and dural incisions. (A) NRS scores at rest. (B) NRS scores at motion. NRS, Numeric Pain Rating Scales; LOGAB, ultrasound-guided unilateral lesser occipital nerve combined with great auricular nerve block; NSB, normal saline block. T1, extubation; T2, 2 h after surgery; T3, 4 h after surgery; T4, 6 h after surgery; T5, 12 h after surgery; T6, 24 h after surgery; T7, 48 h after surgery. *P < 0.05, **P < 0.01, ***P < 0.001. (C) MAP during skin and dural Incisions. (D) HR during skin and dural Incisions. MAP, mean arterial pressure; HR, heart rate; LOGAB, ultrasound-guided unilateral lesser occipital nerve combined with great auricular nerve block; NSB, normal saline block. T1, 1 min before induction; T2, 1 min after induction; T3, 1 min before skin incision; T4, 1 min after skin incision; T5, 3 min after skin incision; T6, 5 min after skin incision; T7, 10 min after skin incision; T8, 1 min before dural incision; T9, 1 min after dural incision; T10, 3 min after dural incision; T11, 5 min after dural incision; T12, 10 min after dural incision. *P < 0.05. (E) MAP increment (%) during skin and dural Incisions. (F) HR increment (%) during skin and dural Incisions. T1, 1 min after skin incision; T2, 3 min after skin incision; T3, 5 min after skin incision; T4, 10 min after skin incision; T5, 1 min after dural incision; T6, 3 min after dural incision; T7, 5 min after dural incision; T8, 10 min after dural incision. *P < 0.05