小于孕龄儿(SGA)属高危妊娠儿,其围产死亡率是适龄儿(AGA)的4倍～10倍,其婴儿合并症亦明显增多。因此、对SGA强调加强产前检查,并于产间行胎心监护(Cardiotocography,CTG)。但有关产时CTG预测SGA安危的准确性报道不多。对SGA阴道分娩前CTG的意义及准确性进行了研究,同时观察Apgar评分对新生儿酸中毒预测的可靠性。 Less than gestational age (SGA) is a high-risk pregnancy, perinatal mortality rate was 4 to 10 times the age-appropriate children (AGA), its infantile comorbidity also increased significantly. Therefore, the SGA emphasizes the strengthening of prenatal care and fetal heart cardiology (Cardiotocography, CTG). However, there are few reports on the accuracy of CTG predicting SGA during labor. The significance and accuracy of CTG before vaginal delivery in SGA were studied, and the reliability of Apgar score in predicting neonatal acidosis was also observed.