1Westgren M,Kruger K,EK S,et al.Lactate compared with pH analysis at fetal scalp blood sampling:a prospective randomized study[J].Br J Obstet Gynecol,1998,105:29-33.
2Van Cappellen AM,Heerschap A,Nijhuis JG,et al.Hypoxia,the subsequent xystemic metabolic acidosis,and their relationship with cerebral metabolite concentrations:an in vivo study in fetal lambs with proton magnetic resonance spectroscopy[J].Am J Obstet Gynecol,1999,181:1 537-1 545.
3Penrice J,Cady EB,Lorek A,et al.Proton magnetic resonance spectroscopy of the brain in normal preterm and term infant,and early changes after perinatal hypoxia-ischemia[J].Pediatr Res,1996,40:6-14.
4Longo LD,Packia Nathan S.Hypoxia-ischaemin and the developing brain:hypotheses regarding the path ophysioloht of fetalneonatal brain damage[J].Br J Obstet Gynaecol,1997,104:652-662.
5Jeffrey M,Perlman,MB.Markers of asphyxia and neonatal brain injury[J].New England J of Med,1999,29:364-365.
6Rouse DJ, OwenJ ,Goldenberg RL,et al .Determinants of the optimal time in gestation to initiate antenatal fetal testing: a decisionanalytic approach[J].Am J Obstet Gynecol,1995,173:1 357-1 361.
7Martin CB Jr.Electronic fetel monitoring:a brief summary of it development,problems and prospects[J].Eur J Obstet Gynecol Reprod Biol,1998,170:1 081-1 087.