The Placenta Blog


Vaginal checks during labor, used to determine cervical dilation and the progression of labor, is one of the most dreaded and uncomfortable procedures for a laboring woman.  Vaginal exams can also increase the risk of infection as bacteria is forced toward the cervix, especially after the membranes have ruptured.  For low risk labors, vaginal exams can even be unnecessary.

Interestingly, there is a less intrusive, visual way to assess a moms labor progression:

“Basically as the baby descends, a red/purplish (or perhaps brown depending on skin color) line creeps up from the anus to the top of the natal cleft in between the bottom cheeks.  When the line reaches the top of the natal cleft, 2nd stage is probably a matter of minutes away.  A line sitting an inch below the natal cleft is probably in transition.  A line just above the anus probably signifies early labor.

Byrne DL & Edmonds DK, the authors of the original study, surmise that the cause of the line is ‘vasocongestion at the base of the sacrum.’ Furthermore, the authors reason that ‘this congestion possibly occurs because of increasing intrapelvic pressure as the fetal head descends, which would account for the correlation between station of the fetal head and red line length.’”  -Science & Sensibility

marked-purple-line-295x300

One Response to “In Leiu of Vaginal Checks, Look For The Line!”

  1. Sarah

    The Pin It button isn’t working because it says there are no pinable images on the page…

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Author: Jodi Selander


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