6Schier R,Guerra D,Aguilar J,et al.Epidural space identification:a meta-analysis of complications after air versus liquid as the medium for loss of resistance[J].Anesth Analg,2009,109(6):2012-2021.
7罗翠香.妇产科病房应用静脉留置针输液及其护理[J].医药前沿,2013,3(12):298.
8Mhyre JM,Greenfield ML,Tsen LC,Polley LS.A systematic review of randomized controlled trials that evaluate strategies to avoid epidural vein cannulation during obstetric epidural catheter placement[J].Anesth Analg,2009,108(4):1232-1242.