Pajntar M, Verdenik I
Department of Obstetrics and Gynecology, University Medical Center, Ljubljana, Slovenia.
Int J Gynaecol Obstet. 1995 Jun;49(3):277-81. doi: 10.1016/0020-7292(95)02374-l.
To investigate the activity of the smooth muscles in the cervix at the onset of induced labor and to further elucidate this activity in relation to uterine contractions and to the duration of the latent phase of labor, taking cervical ripeness into account.
Cervical electromyographic (EMG) activity was studied at the onset of labor induced with amniotomy and oxytocin. Bipolar measurement of cervical electrical activity was performed. The root mean square of the cervical EMG activity and the intensity of intrauterine pressure in two groups of parturients with different cervical ripeness were compared.
The EMG activity was higher in the group with lower Bishop scores. We found a significant positive correlation between EMG activity and duration of the latent phase of labor.
Smooth muscles in the human cervix are active during labor and act to some extent independently of the uterine corpus.
研究引产开始时宫颈平滑肌的活性，并结合宫颈成熟度，进一步阐明这种活性与子宫收缩及潜伏期时长的关系。
在人工破膜和使用缩宫素引产开始时，研究宫颈肌电图（EMG）活性。对宫颈电活动进行双极测量。比较两组宫颈成熟度不同的产妇的宫颈EMG活性均方根和宫内压强度。
Bishop评分较低的组中EMG活性较高。我们发现EMG活性与潜伏期时长之间存在显著正相关。
人类宫颈平滑肌在分娩期间是活跃的，并且在一定程度上独立于子宫体发挥作用。
