How many centimeters is the birth canal? Many girls will naturally choose the way of natural delivery. The delivery of the baby needs to go through the birth canal, so the mother needs to have a certain understanding of the birth canal before giving birth. Here's how many centimeters the birth canal is.
How many centimeters is the birth canal 1? When a woman gives birth, the length of the birth canal is about 10 cm, so that the baby can have better natural delivery conditions. The specific value depends on the actual situation of pregnant women. Everyone's physique is different, so the length will be different. Before delivery, some necessary prenatal examinations need to be carried out under the guidance of a doctor, and we must actively cooperate with the doctor. With the increase of the number of female deliveries, the birth canal will be appropriately extended, and the over-delivery will increase by 0.5~ 1.2 cm for each delivery. These are all relatively normal phenomena.
What are the causes of birth canal injury?
Pregnancy complications
Maternal women with pregnancy complications are likely to have such injuries. If the maternal liver and kidney function is abnormal, or there are diseases such as hypertension during pregnancy, vulvar edema, poor elasticity and poor coagulation ability are likely to occur, and accordingly there is a great possibility of tearing and hematoma.
abnormal labor
When sudden labor occurs, the total labor time is longer than 24 hours, the second labor time is longer than 120 minutes, and the fetal head position is abnormal, which will directly cause tissue damage. In the second stage of labor, the influence of abdominal compression on the decrease of placental presentation may also cause damage to the birth canal.
Improper midwifery measures
The main causes of laceration are improper operation, wrong focus, poor cooperation with parturient and lack of agility. Midwifery equipment, aspirator, forceps, etc. It will cause some damage to the birth canal, especially the forceps.
How many centimeters is the birth canal? What is the birth canal of a normal person?
When giving birth, it's not just the mother who works hard. The fetus is also trying to squeeze out the birth canal. However, the shape of the birth canal is very complicated and curved. In order to pass through the narrow birth canal, the baby will rotate well according to the shape of the pelvis.
The baby will curl up after entering the basin, and the share of the fetal head will be squeezed and overlapped, thus making the fetal head smaller. In fact, according to the shape of the pelvis, through the rotation of the birth canal, when the cervix is completely opened, it will enter the stage of business and delivery. It hurts the most at this time, and my mother also has a strong feeling of defecation. Here, the doctor will teach you how to cooperate with exhalation and inhalation, so the mother should cooperate well to facilitate the smooth delivery of the fetus.
How to prevent birth canal tearing
In production, sometimes the birth canal tears, so how to prevent the birth canal tears as a pregnant woman?
1. Encourage planned women to do more physical exercise and physical activity before pregnancy to enhance skin and muscle elasticity and prevent obesity.
2. Strengthen prenatal health education and delivery knowledge education.
We should change the traditional purely biomedical factors that focus on prenatal examination and delivery, and incorporate psychological consultation, guidance and maternal knowledge popularization into obstetric work procedures to help pregnant women eliminate bad psychology such as fear, anxiety and impatience, wait for delivery in the best psychological state, and change passive initiative into natural, normal and healthy delivery.
3. Actively prevent obstetric complications during pregnancy, pay attention to the prevention and early treatment of vulva and vaginitis, and strengthen perineal self-education.
4. During pregnancy, if the fetus is found to be larger or has given birth to a huge baby in the past, the pregnant woman should be checked.
If you are a pregnant woman with diabetes, you should actively treat her. After 36 weeks of pregnancy, you should choose induced labor or cesarean section according to fetal maturity, placental function examination and diabetes control.
5. During prenatal examination, instruct pregnant women with normal pelvis and estimated fetal weight below 4000g to do levator ani exercise 65,438+0 ~ 2 weeks before the expected date of delivery.
Generally speaking, when a woman gives birth, it is actually necessary for both the mother and the fetus to act at the same time, and it is difficult for one party to give birth smoothly. It is possible to tear the birth canal, so you can exercise more at ordinary times and actively treat any abnormality.
How many centimeters is the birth canal? What do you mean the birth canal is in poor condition?
Poor birth canal will affect the progress of the fetus coming out during delivery and may also cause dystocia. Cervical dysplasia, immaturity can be treated with maturity, and caesarean section is the best if the effect is not good. So in this case, it is recommended to listen to the doctor's advice for caesarean section. If the expected date of delivery is approaching, you should prepare what you need during delivery and what you need after delivery in advance, take more walks and keep a good mood.
If you are afraid of pain, it is better to recommend caesarean section. If you feel pain during childbirth and then switch to caesarean section, you will suffer twice. It is recommended to check before delivery. Pay attention to rest at ordinary times, strengthen nutrition, and go to the hospital regularly.
How to check the bone birth canal
1. Pelvic entrance plane: the superior margin of pubic symphysis is in front, the iliopubic margin is on both sides, and the sacrum is in the back.
Anterior and posterior diameter of entrance: also known as true combined diameter. The average distance from the midpoint of the superior margin of pubic symphysis to the middle of the anterior margin of sacrum is about 1 1cm, which is an important diameter line for fetal presentation into the pelvic entrance, and its length is closely related to delivery.
Transverse diameter of entrance: the maximum distance between left and right iliac crest, with an average of about 13cm. ③ Oblique diameter of entrance: the distance from the left sacroiliac joint to the right iliac crest is the left oblique diameter; The distance from the right sacroiliac joint to the left iliac crest is the right oblique diameter, with an average of about 12.75cm.
2. Maximum plane of pelvis: This plane is the widest part of pelvis and has no clinical significance in obstetrics.
Pelvic median plane: the smallest plane of the pelvis with two radial lines.
Anteroposterior diameter of middle pelvis: the average value is about 1 1.5cm.
Transverse diameter of middle pelvis: also called interspinous diameter of ischium. The average distance between the two ischial spines is 65438±00cm, which is an important diameter line of fetal presentation through the middle pelvis, and its length is closely related to delivery.
3. Pelvic outlet plane: pelvic lower mouth.
Anterior and posterior diameter of outlet: the distance from the lower edge of pubic symphysis to sacrococcygeal joint, with an average of 1 1.5cm.
Transverse diameter of outlet: also called the diameter between ischial tubercles. The distance between the two ischial tubercles, with an average of 9 cm, is the diameter of the fetus passing through the pelvic outlet, and its length is closely related to delivery.
For pregnant women with poor birth canal conditions, caesarean section is undoubtedly the best choice, but if pregnant women insist on choosing a natural delivery, it is not impossible, but they will suffer a lot of crimes and accidents may occur during the delivery of the fetus. Therefore, doctors generally recommend that women have caesarean section, which is good for both children and pregnant women.