No contractions

Introduction No uterine contractions are referred to as the expected date of delivery, and pregnant women do not have contractions. An important feature of labor - regular uterine contractions or contractions. Contractions: uterine contractions (ie, contractions), begin to be irregular, weaker, gradually become regular, stronger and stronger, duration is extended, interval time is shortened, such as interval of 2-3 minutes, Lasts for 50-60 seconds. By the time of the expected date of birth, only the contractions with pain are the precursors of childbirth. A few weeks before delivery, the uterus muscles are more sensitive, and irregular uterine contractions will occur, with short durations, weak strength, or limited to the lower part of the uterus. After a few hours, it stops again, and the cervix can not be opened. Therefore, it is not a labor, which is called a false contraction. The uterine contractions in labor are regular. The initial interval is about 10 minutes, the pregnant woman feels abdominal pain, and the duration of the pain is gradually extended to 40 seconds to 60 seconds. The degree is also increased, and the interval is shortened, about 3 to 5 minutes. When the uterus contracts with abdominal pain, you can feel the lower abdomen is very hard.

Cause

1. Uterine infection.

2. Extrauterine infections, such as urinary tract infections, vaginitis.

3. Placental abnormalities, such as placenta previa, early exfoliation of the placenta.

4. Abnormal uterus, such as double-horned uterus, uterine fibroids, uterine adenomyosis.

5. The uterus is too large, such as multiple pregnancy, hydatidiform mole.

6. Early water breakage.

7. Cervical atresia.

8. The front tire had a history of premature birth.

9. Older than 35 years old.

10. Pregnant women smoke and drink alcohol.

11. Trauma (such as an impact or fall on the abdomen).

an examination

Related inspection

Fetal heart monitoring oxytocin stimulating test nipple stimulation test

In the last three months of pregnancy, the uterus has intermittent contractions, giving it a name in medical terms and a false contraction. Its performance is irregular uterine contraction, frequency is not accelerated, strength does not increase, the thickness of the cervix does not change at this time, and the cervix does not show signs of continuous expansion, the contraction occurs mostly at night and disappears in the morning. False constriction sometimes increases in intensity, and there may be a contraction in the regular 10 to 20 points. False constriction can cause pain and discomfort in pregnant women, but after a while, the intensity and frequency of pain will improve, which often makes the woman not To be anxious about whether you are about to give birth, and to focus all your spirits on pain, do not rest. If the interval is long, about 10 to 20 minutes, or after a little walking, rest, the situation will improve, usually a false contraction.

1. The uterus has regular contraction pain, once in at least 10 minutes, and lasts for more than 30 seconds.

2. Vaginal bleeding or water breakage.

3. Lower abdominal pain or lower back pain, a burst of back and shoulders, a sense of will, a sense of falling.

Differential diagnosis

Pseudo-uterine contractions: From the 28th week of pregnancy, the phenomenon of "false contractions" often occurs in the abdomen. If the pregnant woman is standing or sitting in the same position for a long time, it will feel the hardening of the abdomen (ie, the symptoms of tight stomach), which is "false contraction."

Weak uterine contraction: uterine contraction is an abnormal productivity. According to the time of occurrence, it can be divided into primary uterine atony (appearing at the beginning of labor) and secondary uterine atony (the cervix opens 3cm into the active period). Common fetal position abnormalities or head basin disproportionate; followed by uterine dysplasia and mental factors.

Late delivery of the fetal head after delivery: clinical manifestations of persistent posterior occipital and occipital transverse position. After the delivery, the fetal head is connected late and the flexion is poor. Because the posterior part of the occipital position is not easy to adhere to the cervix and the lower uterus, it often leads to coordinated uterine contraction and slow cervical dilatation. Because the occipital bone continues to be located in the back of the pelvis to compress the rectum, the maternal consciously anal bulge and defecation, resulting in the uterus has not been fully open, premature use of abdominal pressure, easily lead to anterior lip edema of the cervix and maternal fatigue, affecting the progress of labor. Persistent post-occipital position often leads to prolongation of the second stage of labor. If the fetal hair has been seen in the vaginal opening, but after many times of contractions, but the breath is not seen, the fetal head continues to decline smoothly, it should be thought that it may be a persistent posterior position.

1. The uterus has regular contraction pain, once in at least 10 minutes, and lasts for more than 30 seconds.

2. Vaginal bleeding or water breakage.

3. Lower abdominal pain or lower back pain, a burst of back and shoulders, a sense of will, a sense of falling.

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