Katz M, Newman R B, Gill P J
Am J Obstet Gynecol. 1986 Jan;154(1):44-7. doi: 10.1016/0002-9378(86)90390-x.
With use of an ambulatory tocodynamometer, prelabor uterine activity was recorded daily during pregnancy in 34 patients at increased risk of preterm labor and delivery. The data indicate that the frequency of contractions was significantly greater among women who subsequently developed preterm labor when compared to that observed among women who labored at term. This difference was present up to several weeks before the onset of labor. An additional significant rise in frequency of contractions could be observed within the last 24 hours before the development of clinically apparent preterm labor, as evidenced by progressive cervical dilation and effacement. If these results can be reproduced in a larger sample, intermittent ambulatory monitoring may offer an effective way to better identify patients at risk of preterm labor as well as enhance the early diagnosis of this event.
使用动态宫缩压力计，对34名早产和分娩风险增加的孕妇在孕期每天记录分娩前的子宫活动。数据表明，与足月分娩的女性相比，随后发生早产的女性宫缩频率明显更高。这种差异在分娩开始前几周就已存在。在临床上明显的早产发生前的最后24小时内，宫缩频率可观察到进一步显著上升，表现为宫颈进行性扩张和消退。如果这些结果能在更大的样本中得到重现，间歇性动态监测可能会提供一种有效的方法，以更好地识别有早产风险的患者，并加强对这一事件的早期诊断。
