[The cervical ripening score by trans-perineum ultrasound].
OBJECTIVE
To evaluate cervical ripening in pregnancy at term by trans-perineum ultrasound.


METHODS
The cervical length, cervical internal os width, cervical echo intensity, cervical position and distance between fetal presentation and vaginal external os were assessed by trans-perineum ultrasound (transducer 3.5MHz) in 100 cases of normal pregnant women at term.


RESULTS
On the basis of Bishop score, the results showed, cervical ripening score > or = 9, 14 cases were in labor, mean parturient time 3.9 +/- 3.1 hours; 5 approximately 8 scores, 54 cases were in labor, mean parturient time 20.8 +/- 3.9 hours; < or = 4 scores, 32 cases in which only 21 cases were in labor, mean parturient time 46.9 +/- 3.9 hours. The results were significantly different among the three groups.


CONCLUSIONS
Ultrasonographic cervical ripening score is an objective noninvasive method for assessment of cervical ripening at term.
Chang
C
C
Obstetrics and Gynecology Hospital, Shanghai Medical University.
Zhang
Y
Y
Wang
C
C
D000328:Adult; D002584:Cervix Uteri / Q000000981:diagnostic imaging* / Q000502:physiology; D005260:Female; D006801:Humans; D007745:Labor Onset / Q000502:physiology; D011247:Pregnancy; D011263:Pregnancy Trimester, Third; D014463:Ultrasonography