The risk factors for labor onset XXXX .

@entity1 @entity644 @entity64 @entity101 @entity4 @entity3036 @entity1468
UNASSIGNED: Our aim was to clarify the perinatal outcomes of and risk factors for @entity101 that is first detected after labor onset (labor onset @entity101 , LOH), which may be a risk factor for @entity3036 and @entity64 during labor. A total of 1349 parturient @entity1 who did not exhibit @entity1468 or gestational @entity101 prior to labor were examined. The @entity1 were classified into four groups: the normotensive (n=1023) (whose systolic blood pressure (SBP) remained below 140   mm   Hg throughout labor), mild LOH (n=241) (whose maximum SBP during labor ranged from 140 to 159   mm   Hg), severe LOH (n=66) (whose maximum SBP during labor ranged from 160 to 179   mm   Hg) and emergent LOH groups (n=19) (whose maximum SBP during labor was greater than 180   mm   Hg). The perinatal outcomes and @entity1 characteristics of the four groups were compared. Twenty-four percent of the pregnant @entity1 who remained normotensive throughout pregnancy developed @entity101 during labor. One of the @entity1 in the emergent LOH group developed @entity3036 . The blood pressure at delivery and frequencies of hypotensor use, interventional delivery and low Apgar scores differed significantly among the four groups. The following risk factors for severe/emergent LOH were extracted: being over 35 years old, a body mass index at delivery of >30, an SBP at 36 weeks' gestation of 130-134   mm   Hg, an SBP at admission of 130-139   mm   Hg, @entity644 (a score of 2+ on the dipstick test) and severe @entity4 . The risk factors for severe/emergent LOH were identified in this study. In high risk cases, repeatedly measuring maternal blood pressure during delivery might help detect critical @entity101 early.
