1Van De Velde M, Van Schoubroeck D, Jani J, et al. Combined spinakepidural anesthesia for cesarean delivery: dose-dependent effects of hyperbaric bupivacaine on maternal hemodynamics. Anesth Anaig, 2006,103: 187-190.
2Ben-David B, Miller G, Gavriel R, et al. Low dose bupivacaine-fentanyl spinal anesthesia for cesarean delivery. Reg Anesth Pain Med, 2000,25:235- 239.
3Ginosar Y, Mirikatani E,Drover DR,et al. ED50 and ED95 of intrathecal hyperbaric bubivacaine eoadministered with opioids for cesarean delivery. Anesthesiology, 2004,100 : 676-682.