Author/Editor     Pajntar, M; Verdenik, I
Title     Electromyographic activity in cervices with very low Bishop score during labor
Type     članek
Source     Int J Gynecol Obstet
Vol. and No.     Letnik 49
Publication year     1995
Volume     str. 277-81
Language     eng
Abstract     Objectives: 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 contrations and to the duration of the latent phase of labor, taking cervical ripeness into account. methods: Cervical eletromyographic (EMG) activity was studied at the onset of labor induced with ammiotomy and oxytocin. Bipolar measurement of cervical electrical activity was performed. The root mean square of the servical EMG activity and the intensity of intrauterine pressure in two groups of parturients with different cervical ripeness were compared. Reults: 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. Conclusion: Smooth muscles in the human cervix are active during labor and act to some extent independently of the uterine corpus.
Descriptors     CERVIX UTERI
LABOR, INDUCED
MUSCLE, SMOOTH
PREGNANCY
ELECTROMYOGRAPHY
OXYTOCIN
AMNION
UTERINE CONTRACTION