Clinical Impacts of Nonstress Test during Second Stage of Labor on Perinatal Outcomes

Objective To explore the clinical impacts of nonstress test(NST) during the second stage of labor on perinatal outcomes.Methods A retrospective analysis based on 2 848 expectant mothers from October 2011 to March 2012 was carried out.Of the total,423 patients,whose NST results on the second stage of labor were found to be type II or III,were taken as case group,in which there were 7 sub-groups based on different NST results,while those with NST results of type I(n=200) during the same time period as control group.Clinical data,mainly the perinatal outcomes of two groups were collected for comparison.Results There were significant differences of umbilical arterial blood pH values,delivery time as well as low Apgar score among sub-case groups and control group(P0.01).The neonatal asphyxia rate in sub-groups of abnormal baseline,sinusoidally and late deceleration significantly differed from that of control group(P0.01).Conclusion Consecutive monitoring the type II or III NST results during the second stage of labor would be helpful for early identification of fetal distress.Timely and accurate managements could reduce the rate of neonatal asphyxia.