Objective: To evaluate factors affecting active phase arrest.
Method: Retrospective study from 1992 to 1994 was performed. A total of 166 pregnant women were included, 83 in to the active phase arrest group and 83 in normal group.
Results: There were significant differences in the average birth weight and the prevalence of abnormal fetal presentation between the 2 groups. The time length of the latent phase was another factor influencing active phase arrest.
Conclusion: With normal pelvis, the high birth weight, abnormal presentation and prolonged latent phase were active phase arrest.