Hiersch Liran, Salzer Liat, Aviram Amir, Hadar Eran, Yogev Yariv, Ashwal Eran
a Helen Schneider Hospital for Women, Rabin Medical Center , Petach Tikva , Israel.
b Sackler Faculty of Medicine, Tel Aviv University , Tel Aviv , Israel.
J Matern Fetal Neonatal Med. 2017 Nov;30(21):2620-2625. doi: 10.1080/14767058.2016.1259309. Epub 2016 Nov 24.
To determine the association between the myometrial electrical activity in the active and second stages of labor at term using electrical uterine myography (EUM).
A prospective observational study of 47 singleton deliveries at term in a tertiary hospital. All women were assessed using noninvasive 9-channel surface electrodes of the EUM during labor. EUM index (EUMi) was calculated as the mean electrical activity during a 30 min monitoring period and expressed as microjouls (MJ). Mean EUMi of the active and second stages of labor were compared accordingly.
Mean EUMi during the active phase was 3.53 ± 0.43 MJ, whereas mean EUMi in the second stage was 3.66 ± 0.48 MJ (p = 0.02). Correlation analysis between mean EUMi of the active and second stages of labor produced r=0.68 (p < 0.01). In a regression analysis model EUMi of the active stage of labor remained strongly correlated with the duration of the second stage (r=0.73, p < 0.001). No correlation was found between EUMi and the duration of the second stage.
A positive correlation of myometrial electrical activity exists between active phase and second stage of labor. However, while EUMi was associated with the duration of the active phase, no correlation was found between EUMi and the duration of the second stage.
使用子宫肌电图（EUM）确定足月分娩活跃期和第二产程子宫肌电活动之间的关联。
在一家三级医院对47例足月单胎分娩进行前瞻性观察研究。所有产妇在分娩期间使用EUM的无创9通道表面电极进行评估。EUM指数（EUMi）计算为30分钟监测期内的平均电活动，以微焦耳（MJ）表示。相应地比较分娩活跃期和第二产程的平均EUMi。
活跃期的平均EUMi为3.53±0.43MJ，而第二产程的平均EUMi为3.66±0.48MJ（p = 0.02）。分娩活跃期和第二产程的平均EUMi之间的相关分析得出r = 0.68（p <0.01）。在回归分析模型中，分娩活跃期的EUMi与第二产程的持续时间仍密切相关（r = 0.73，p <0.001）。未发现EUMi与第二产程的持续时间之间存在相关性。
分娩活跃期和第二产程之间子宫肌电活动呈正相关。然而，虽然EUMi与活跃期的持续时间有关，但未发现EUMi与第二产程的持续时间之间存在相关性。
