[Abnormal partograph in primipara with vertex presentation].

A prospective study on partograph (cross X type) was carried out in primipara with vertex presentation. There were 50 cases of dystocia in the study group and 50 cases of normal delivery in the control group. The results showed that the latent phase and active period of labor course in study group was significantly longer than the control group (P < 0.001). The speed of cervical dilation and descent of fetal presentation in the study group was marked slower than the control group (P < 0.001). The rate of postpartum hemorrhage, total time of labor, operative delivery rate and neonatal asphyxia rate in the study group were significantly higher than the control group (P < 0.001). After active management 38 cases in the abnormal group were delivered vaginally. It suggested that the use of partography is very important in revealing abnormal labor course and detection of dystocia, guiding the management of labor.