Abstract: The number of fetal death was 228 in 37 890 times of non-stress testing(NST)from 1989～1996(8 years). 51 cases were died with one week of NST accounted 22.4% of total fetal death and 0.13% of total number of NST. 97.1% of NST result was reaction(NST-R)and 2.9% was non reaction(NST-NR). The fetal mortality rate in NST-R group was significantly lower than that of NST-NR group 0.07% vs 2.28%, P<0.001. In NST-R group 73.1% of fetal deaths was term and normal birth weight babies, 50% of their mothers was low risk pregnancy. The main cause of fetal deaths was acute even(74%)due to cord or placental problems. In NST-NR group 96% of fetal deaths was premature and low birth weight babies. 80% of them was from high risk mothers including 64% of pregnancy induced hypertension disorders and 16% of intrauterine fetal growth retardation. All of NST-NR cases complicated with other abnormal fetal placental testing. The result showed that NST is one method of survillances to predict prognosis. If result of NST is NST-NR and complicated with other abnormal results of fetal placental testing, the prognosis would be poor especial for premature baby.

Key words: non stress testing, fetal death, pregnancy induced hypertension, high risk pregnancy