4Vallejo MC,Firestone LL,MandellGI,et al.Effect of epidural analges ia with ambulation on labor du ration[J].Anesthesiology,2001,95(4):857-861.
5Polley LS,Columb MO.Comparison of epidural ropicacaine and bupivacaine in combination with sufentanil for labor[J].Anesthe-siology,2000,92(3):280-281.
二级参考文献22
1Richardson MG. Regional anesthesia for obstetrics. Anesthesiol Clin North Am, 2000,18: 383-406.
2Liu SS, McDonald SB. Current issues in spinal anesthesia. Anest-hesiology, 2001,94:888-906.
3Myatt L, Brewer AS, Langdon G, et al. Attenuation of the vasoc-onstrictor effects of thromboxane and endothelin by nitric oxide in the human fetal-placental circulation. Am J Obstet Gynecol,1992, 166:224-230.
4Yanik FF, Amanvermez R, Kocak I, et al. Serum nitric oxide and glutathione levels in preeclamptic and normaotensive women during labor. Gynecol Obstet Invest. 2001,51:110-115.
5Zidek Z. Role of cytokines in the modulation of nitric oxide production by cyclic AMP. Eur Cytokine Netw, 2001,12 :22-32.
6Salkowski CA, Detore G, McNally B, et al. Regulation of inducible nitric oxide synthase messenger RNA expression and nitric oxide production by lipopolysaccharide in vivo: the roles of macrophages, endogenous IFN-gamma, and TNF-receptor-1-mediated signali
