The normal size of the uterus in nulliparous women and parous

The dimensions of the internal organs, doctors find important diagnostic feature, so received during the survey values ​​are recorded in the medical records. Every woman has a unique anatomical parameters, for example, the magnitude of the uterus will always vary in different people.

Age, height and weight, body type, number of pregnancies and their outcomes have an impact on the state of the organ. The most accurate method of establishing the concept of the norm is the ultrasound, showing uterine length and width, as well as cervical parameters.

Structure and anatomical features

Normally, the uterus is located in the pelvic cavity and is a hollow body consisting of muscle tissue. In women of reproductive age, he takes a pear-shaped, so that his body is clearly seen, the bottom and rounded section - neck. After delivery, the uterus becomes ovoid.

The uterine wall have a surface layer (or serosa), medium (muscle) and inner (endometrium). Cervix in parous and nulliparous women is different, its usual size is determined by many parameters.

Norma uterine cavity size is different from the girls who gave birth and nulliparous women.

In girls, on average length 3.2 cm, width 1.5 cm. At puberty, uterine dimensions under the influence of increased estrogen and are as follows: length - 4.5 cm width - 3.8 cm. The girls, who did not give birth to uterine length dimensions are on average 4.8 cm, width - 4 cm. cervix in nulliparous women is 2.5 - 2.6 cm.

Reproductive status and personal characteristics of an organism can affect these values, so you need an additional examination.

It is known that the thickness of the inner layer varies depending on the phase of the cycle. In the first phase endometrium dimensions can vary up to 10 mm, in the second - 14 mm.

Table body size normally on US

The normal rate of uterine parameters different from giving birth and millipara patient, but there are other dimensions that define the characteristics of the reproductive system. Every woman should have an idea about the peculiarities of his body in the preparation of conclusions about the state of his health.

Overall table shows the normal size of the uterus for common categories, and it contains information about the neck.

reproductive group	Length	Width	Thickness
Uterine body (housing)
The absence of pregnancy	3,9–4,5	4,1-4,3	3,2-3,3
Miscarriages, abortions and t. D. history	4,5-4,8	4,4-4,6	3,4-3,7
The only labor	5,1-5,4	5,0-5,2	3,9-4,1
Second and subsequent generations	5,6-5,7	5,3-5,5	4,2-4,5
From 1 to 5 years since the arrival of menopause	3,2–4,4	2,6–3,6	3,0–4,2
More than 5 years since the arrival of menopause	2,8–3,8	2,0–3,0	2,6–3,6
Neck
The absence of pregnancy	2,4–3,4	2,3–3,0	not rated
Miscarriages, abortions and t. D. history	2,6–3,6	2,4–3,1	—
The only labor	2,8–4,0	2,4–3,2	—
Second and subsequent generations	3,1–4,3	2,5–3,5	—
From 1 to 5 years since menopause	2,5–3,3	1,9–2,9	—
More than 5 years since menopause	1,9–2,0	1,7–2,5	—

On the normal size of the uterus It can affect not only the actual childbirth, but pregnancy is interrupted for various reasons. Body increases, not only under the influence of the growing fetus, but also a hormone produced by the body from the first day.

As a rule, these changes remain in the body forever, so take into account the number of gynecologists interrupted abortions and miscarriages.

In nulliparous

The normal uterine size in nulliparous women is a length of 3.9-4.5 cm, 4.1-4.3 cm in width, thickness is 3.2-3.3 cm. But this figure is correct only if the patient's body has never encountered with conception, and a slight increase due to the normal production of hormones during development of the embryo, which later torn.

Less increase unobtrusive doctors attributed to the presence of pathology, for example, hysteromyoma body can cause a change therein. When nulliparous woman breaks a few pregnancies, her uterus can take the normal form of the body, similar to the figures parous patient.

I gave birth

In parous women describe a body part exposed by the following factors:

• production of hormones;
• weight and size of fruit;
• volumes placenta and amniotic fluid;
• generic process.

During gestation normal uterine size is highly variable, the body quickly returns to normal after childbirth, but its value will change forever. Laboring woman should know that having a baby will affect the status of the mother cavity and its dimensions can reach 5.1-5.4 cm in length, 5.0-5.2 cm in width, 3.9-4.1 cm is thickness. The birth of subsequent children will increase the size of approximately 1.5 cm.

Normal cervical indicators

The neck is conventionally divided into vaginal and supravaginal part. It is riddled with cervical canal. The neck is disclosed in a special cavity opening - throat, and its shape and size can be modified depending on the availability of natural parity. Normal index, the patient, which has never been pregnant in length is approximately 3.0 - 3.5 cm, a width of 3 cm.

little value

Norma cervical size is under special control of obstetricians. Cervical incompetence can lead to premature birth in early pregnancy. Normal cervical parameters during pregnancy ranges from 4.5 cm in the first trimester to 3 cm in the third. With progressive reduction of the size different from the norm, exposed diagnosis of CIN, appointed by the treatment facilities that reduce uterine activity.

cervix length of 2.5 cm before 36 weeks is an indication for setting obstetric pessary, or joints.

During pregnancy, the cervix is ​​measured by the size of the ultrasonic waves. In addition to body length assess the condition and the internal os of the cervical canal. Evaluate the degree of expansion of the channel, and the presence of open internal os. With a length of less than 2-2.2 cm obstetric pessary put impossible, the same applies to the joints.

Little neck exposed on average to treat 14 to 25 weeks of pregnancy. According to the testimony times may vary.

uterine size below normal girls who have reached puberty, is a possible symptom of infantilism. Hypoplasia insufficient uterine body described parameters by ultrasonic, depending on which values ​​are differentiated at 3 degrees.

Big size

There is a concept of cervical elongation - elongation of its parameters, such as length. During the first trimester there is an elongation of the department. In addition, the body can increase in length during heavy physical activity, obesity, and uterine prolapse.

Increasing the size of the uterus above the norm is observed at fibroids, endometriosis, hyperplasia, neoplastic, after many births.