cervical edema
Introduction
Introduction The expansion and disappearance of the cervix after entering the labor process is not only the result of passive traction, but also caused by its active changes, which plays a vital role in childbirth, but a series of histochemistry and hemorheology occur during pregnancy due to the cervix. Change to make it more prone to edema.
Cause
Cause
1, cervical edema mostly due to prolonged compression of the anterior lip of the cervix between the fetal head and the pubic symphysis. If the cervix is squeezed for a long time or due to obstetric reasons, maternal premature use of abdominal pressure, so that the abdominal venous pressure increased, cervical venous and lymphatic drainage blocked can cause cervical edema.
2. The occurrence of cervical edema is related to the composition of the cervical tissue and the anatomy of the pelvis:
1 The number of collagen fibers that play an important role in maintaining cervical toughness is greatly reduced, only 30% in non-pregnancy, and is easily degraded under the action of collagenase; the fiber bundles are also thinner, shorter, loosely arranged, and the gap is changed. Wide and easy to water and sodium retention.
2 The cervical vasculature is obviously dilated in the third trimester of pregnancy, and the arterial blood perfusion flow in the cervical tissue is 1.5 to 2.0 times higher than that in the uterine contraction.
Examine
an examination
Related inspection
Cervical examination Cervical gynecological routine examination vaginal secretion examination Obstetric examination Cervical adhesion phase test
(1) Determine the location of cervical edema. Cervical edema occurs mostly in the first stage of labor. When cervical edema is suspected, detailed internal examination should be performed under strict disinfection.
(2) Determine the cause of edema. This is extremely important. Cervical edema is more common due to various obstetric abnormalities. If the cause is not detected in time, the optimal treatment timing will be lost, which will adversely affect the mother and the baby. Delayed labor, head basin not called, pelvic stenosis, abnormal fetal position, etc. are common causes of cervical edema. Therefore, after the discovery of cervical edema, it is necessary to re-evaluate the delivery process, and eliminate the causes of cervical edema.
Diagnosis
Differential diagnosis
Cervical edema needs to be differentiated from the following symptoms:
Cervical anterior lip edema: refers to the phenomenon of edema in the cervix during childbirth. During childbirth, cervical edema is caused by uneven pressure on the cervix and maternal premature breath. Can also be due to poor fetal head flexion, the front top compression of the cervix affects its retraction, resulting in anterior lip edema of the cervix.
Cervical softness: The degree of softness and hardness of the female cervix can be used as one of the signs of the fetus.
