电阻抗测量：分娩前宫颈变化的客观指标。
Electrical impedance measurements: an objective measure of prelabor cervical change.
作者信息
O'Connell M P, Avis N J, Brown B H, Killick S R, Lindow S W
机构信息
Coombe Women's Hospital, Dublin, Republic of Ireland.
出版信息
J Matern Fetal Neonatal Med. 2003 Dec;14(6):389-91. doi: 10.1080/14767050412331312230.
OBJECTIVE
To investigate the use of electrical impedance measurements of the pregnant cervix as an objective measure of cervical favorability (Bishop score > or = 5).
METHODS
A prospective study of 86 women, investigating electrical impedance measurements of the pregnant cervix at the time of induction of labor. Transfer electrical impedance measurements were made by placing a tetrapolar pencil probe of 8 mm in diameter on the surface of the cervix. A Bishop score was determined simultaneously.
RESULTS
A mean resistivity (standard error of the mean) of 7.03 (6.01-8.04) omega(m) was measured for the unfavorable group and 5.34 (4.61-6.07) omega(m) for the favorable group. This was a statistically significant difference (p = 0.016).
CONCLUSION
We highlight the ability of this safe, painless technique to differentiate the favorable from the unfavorable cervix at induction of labor.
目的
研究通过测量妊娠宫颈的电阻抗作为评估宫颈成熟度（Bishop评分≥5分）的客观指标。
方法
对86名女性进行前瞻性研究，在引产时测量妊娠宫颈的电阻抗。通过将直径8毫米的四极笔式探头置于宫颈表面来进行电阻抗测量。同时确定Bishop评分。
结果
宫颈不成熟组的平均电阻率（均值标准误）为7.03（6.01 - 8.04）Ω·m，宫颈成熟组为5.34（4.61 - 6.07）Ω·m。这一差异具有统计学意义（p = 0.016）。
结论
我们强调了这种安全、无痛技术在引产时区分宫颈成熟与不成熟的能力。
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