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[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.
Conclusion:
Ultrasonographic cervical ripening score is an objective noninvasive method for assessment of cervical ripening at term.