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Dilation is a measure of how open the cervical os is. It is usually the most important indicator of progression through the first stage of labour. Dilation is measured by way of a digital cervical exam with the care providers fingers. Dilation is described using centimetres; closed, 1cm, 2cm, 3cm, etc until fully dilated at 10 cm. Fetal station ...
[8] [9] Preparation may also reduce the rare complications of uterine perforation and cervical injury. [8] [10] Options for cervical preparation prior to the abortion procedure include osmotic dilators and pharmacologic agents. Osmotic dilators produce wide cervical dilation in a predictable fashion and are generally used in more advanced ...
The scoring is based on a digital cervical exam and takes into consideration cervical dilation, position, effacement, consistency of the cervix and fetal station. [10] Cervical dilation measures how dilated the cervix is in centimeters; Position refers to the position of the cervix relative to the fetal head and pelvis [10]
Pelvimetry is the measurement of the female pelvis. [1] It can theoretically identify cephalo-pelvic disproportion, which is when the capacity of the pelvis is inadequate to allow the fetus to negotiate the birth canal. However, clinical evidence indicate that all pregnant women should be allowed a trial of labor regardless of pelvimetry ...
Dilation and evacuation can be offered for the management of second trimester miscarriage if skilled providers are available. [6] Some women choose D&E over labor induction for a second trimester loss because it can be a scheduled surgical procedure, offering predictability over labor induction, or because they find it emotionally easier than undergoing labor and delivery.
A sign of cervical weakness is funneling at the internal orifice of the uterus, which is a dilation of the cervical canal at this location. [3] In cases of cervical weakness, dilation and effacement of the cervix may occur without pain or uterine contractions. In a normal pregnancy, dilation and effacement occurs in response to uterine ...
Commercially available Hegar dilators are commonly sold in sets of 8, 10, or 14 individual rods. [7] Each set includes a range of sizes, popularly from 3 mm to 17 mm for single-ended dilators or 3 mm / 4 mm to 17 mm / 18 mm for double-ended dilators, though configurations with sizes anywhere from 1 mm to 26 mm do exist. [8] [9]
Osmotic dilators are most commonly used to slowly dilate and soften the cervix prior to surgical abortion, a process referred to as cervical preparation. Adequate cervical preparation is important prior to surgical abortions because it helps to prevent complications of dilation and evacuation (D&E), such as laceration of the cervix. [ 5 ]