Preterm lamb response to changes in blood pressure.

SCG  =  superior cervical ganglion, BC  =  Brachiocephalic artery, NE  =  norepinephrine, AT II  =  angiotensin 2, CBF  =  cerebral blood flow.
All interventions resulted in significant changes from baseline.
All blood pressure and CBF changes after unilateral SCG removal did not differ significantly from pre-SCG removal responses (t-test for blood pressure, 1-way ANOVA for CBF).

SCG = 颈上神经节（superior cervical ganglion），BC = 头臂干动脉（Brachiocephalic artery），NE = 去甲肾上腺素（norepinephrine），AT Ⅱ = 血管紧张素Ⅱ（angiotensin 2），CBF = 脑血流量（cerebral blood flow）。所有干预措施均使各项观测指标相较于基线产生显著变化。单侧颈上神经节切除术后的血压与脑血流量变化，与颈上神经节切除术前的对应反应无显著差异（血压变化采用t检验，脑血流量变化采用单因素方差分析）。