Lectures of such stance diagnosis

2021-03-21 12:00 AM

Crown of the throne: The head is fully bowed, the landmark of the throne is the occipital bone near the posterior apex, the inner diameter of the throne is the Lower occipital - Anterior cone: 9.5 cm, the crown is capable of laying the vagina.

Fetal position in the uterus

The fetus is surrounded by a large amount of amniotic fluid. The fetus is located in the uterus in the position of the head bent, the back is arched, the upper limbs are folded in front of the chest, the lower limb folds the abdomen. The fetal position is shaped like an egg, the two poles of the egg are the head and buttocks.

The uterine cavity is also ovoid, extremely large at the base of the uterus, and extremely small at the uterus. Normally the fetus is located on the uterine cavity, meaning that the fetal axis and uterine axis coincide and coincide with the axis of the upper waist of the pelvis, but in the first 3 months, the fetus is still young, lying in the volume of water. There is a lot of amniotic fluid, so the lying position of the fetus is not stable, in the middle 3 months the fetus is located along the uterine axis, but the head of the fetus is larger than the buttocks, so it is located at the base of the uterus and the buttocks are at the waist of the uterus (inverted). In the last 3 months, the buttocks grow more, plus the two lower limbs, so the buttocks are larger than the top ends, so the buttocks turn up and lie at the base of the uterus and the smaller tip turns down towards the waist of the uterus. . The reason the fetus can lie down in such a position is that between the fetus and uterus there is a correction according to the Iajot's law "as a solid object within another solid body,

Thus, the position of the fetus in the uterus depends on 3 factors:

Uterine form.

Fetal form.

The movement of the fetus and contraction of the uterus.

If one of these three factors changes, the position of the fetus in the uterus will not be normal. For example, the bottom of the uterus has fibroids, making the bottom of the uterus again, then the first pole of the fetus will turn to the bottom of the uterus, the big buttocks will turn down to the waist of the uterus. In the case of hydrocephalus, the head turns toward the bottom of the uterus because it is larger than the buttocks, the smaller buttocks will turn toward the uterine waist. If the fetus dies, loses movement, the correction of the fetus is not according to the rule.

The position of the fetus with respect to the mother's pelvis

Based on the position of the fetus to the mother's pelvis, it is possible to determine the position, position and pattern of the fetus.

Throne

Definition: The throne is the part of the fetus presenting to the upper waist during pregnancy and during labor.

Classification: There are two types of people that are vertical and horizontal.

The vertical throne: is the position where the axis of the fetus is aligned with the axis of the uterus.

The vertical throne includes: The vertical part of the head is below: depending on the bow of the fetus's head

Crown of the throne: The head is fully bowed, the landmark of the throne is the occipital bone near the posterior apex, the inner diameter of the throne is the Lower occipital - Anterior cone: 9.5 cm, the crown is capable of laying the vagina.

The face: the head is tilted completely, the landmark of the throne is the chin tip, the inner diameter of the throne is Lower chin - Front lip: 9.5 cm. The face is capable of laying the vaginal line if it is a chin guard and cannot lay the vagina if it is the same chin.

Forehead: Investing in the intermediate position, the landmark of the throne is the base of the nose, the diameter if reaching is Upper occipital - Chin: 13.5 cm. The forehead can not be delivered through the vagina.

The anterior dwarf: The landmark of the throne is the anterior one, located in the middle of the sub-frame, the head is bent over the frontal throne. religion because the diameter if reaching the forehead is the occipital chin 13cm.

The vertical throne is above and inverted or buttocks. The inverted person has the complete opposite and the incomplete opposite.

Completely inverted: When the fetus has both buttocks and feet in the upper waist.

Not completely inverted: There are butt-style, knee-style, leg-style.

The inverted throne is not completely butt-style: The fetal legs are crossed up to the shoulders, only the fetal buttocks are present in front of the upper waist.

The inverted throne is not quite the knee type: The fetus is kneeling in the uterus, with only two knees present before the upper waist.

The inverted throne is not quite leg-type: The fetus is standing in the uterus, with the feet facing the upper waist. In fact, it is very rare to find knee and leg inversion. During this bipolar labor this will become completely inverted.

The landmark of the inverted throne is the sacral apex, the inner diameter of the throne is 9 cm at the same height. The inverted throne is capable of giving birth to the vaginal canal if the fetus is small because the difficulty in the inverted throne is that the head is enlarged to the back, so it is easy to get the posterior head.

Horizontal:   The axis of the fetus is horizontal to the axis of the uterus.

The horizontal throne is also known as the shoulder because the shoulder is present before the upper waist, the landmark of the throne is the shoulder. The horizontal house cannot lay in the vaginal line.

In summary, there are 5 specific types of throne: Ur throne, frontal throne, face throne, inverted throne and transverse throne.

So

Definition: This is the correlation between the landmark of the fetus and the left or right side of the mother's pelvis, so each one has two positions: Right position or left position.

How to determine:

Determine whether the landmark of the throne is on the right or left side of the mother's pelvis that we can have a right or left position, in addition, we can also rely on the fetal back to determine the position of the fetus in clinical practice.

Example: The occipital bone on the left side of the pelvis is the left position, we call the occipital - left position. The chin on the right side of the pelvis is what we call the Chin - the pot - right.

Clinically, the crown: what kind of back is on that side, what is the dorsal side of the throne on the opposite side.

That kind of thing

Definition: Is the correlation between the landmarks of the fetus and those of the mother's pelvis.

Several anatomical positions of the markers of the upper waist.

Pelvic tip: In front near the pubic joint.

Pelvic joint: In the back is a joint between the sacrum and pelvis, each side has a joint of the same pelvis.

The point between anonymous ridges: The middle of anonymous ledges.

Classify:

Previous position: The landmark of the fetus corresponds to the crown (...) of the ctenoid.

Horizontal position: The landmark of the fetus is located corresponding to the midpoint of the anonymous ridge.

The following type of position: The landmark of the fetus is located corresponding to the same pelvic joint.

But the pelvis consists of 2 pelvic bones, so there are 6 types of them.

How to call the name:

Example: The Cap

Left position:

Previous replacement type: CCTT.

The following type: CCTS.

Horizontal type: CCTN.

That's right:

Previous replacement: CCFT.

The following type of replacement: CCFS.

Horizontal type: CCFN.

Substitution type

When the throne is down to the lower waist, it is also based on the landmark position of the fetus that there are types of books (depending on the throne).

The cot has 2 types of windows: occipital and occipital chin.

The opposite has two types of books: the same horizontal left and the same side right.

The face: there is one style of chin-guard and an indelible type is the chin - same.