How to distinguish between amniotic fluid index and amniotic fluid depth

Many pregnant women confuse the amniotic fluid index and the amniotic fluid depth. It is no wonder that many pregnant women confuse them. The amount of amniotic fluid or less of amniotic fluid in a pregnant woman can be seen through these two data. Pregnant women in the late pregnancy must pay attention to medical care in all aspects. If they find that there is too little amniotic fluid, they must replenish water in time to avoid affecting the growth and development of the fetus. However, many people do not understand the amniotic fluid index and the amniotic fluid depth. Today I will tell you in detail how to judge the amniotic fluid index and the amniotic fluid depth.

1. Depth of amniotic fluid

The depth of amniotic fluid is mainly determined by B-ultrasound examination of the vertical depth of the amniotic reservoir, and the depth is used to determine whether the pregnant woman has too much or too little amniotic fluid.

The depth of amniotic fluid is between 3 and 7 cm and is within the normal range. The depth of amniotic fluid less than 2 cm is considered oligohydramnios, and the depth of amniotic fluid more than 8 cm is considered polyhydramnios.

2. Amniotic fluid index

The amniotic fluid index is calculated by dividing the uterus cross into four quadrants and taking the largest vertical depth at each position to obtain the total value, which is the amniotic fluid index.

An amniotic fluid index of less than 8mm is considered oligohydramnios, an amniotic fluid index of less than 5mm is considered oligohydramnios, an amniotic fluid index between 9 and 24mm is within the normal range, an amniotic fluid index greater than or equal to 25mm is considered polyhydramnios, an amniotic fluid index between 25 and 35mm is considered mild polyhydramnios, an amniotic fluid index between 36 and 45mm is considered mild to moderate polyhydramnios, and an amniotic fluid index greater than 45mm is considered moderate to severe polyhydramnios.

Both can tell whether a pregnant woman has too much or too little amniotic fluid, but the two calculation methods are different. Are you clear about these two now?

Next, let's first understand the diagnosis basis of amniotic fluid embolism

Amniotic fluid embolism mostly occurs during delivery, but can also occur after giving birth. Most of the time, the onset is sudden and the condition is serious. The occurrence of amniotic fluid embolism generally requires the following basic conditions: increased pressure in the amniotic cavity (too strong uterine contractions or tonic uterine contractions). Rupture of amniotic fluid (2/3 of these are due to placental abruption and 1/3 are due to spontaneous rupture of the placenta). There are open veins or sinuses on the cervix or uterine body lesions. The causes of amniotic fluid embolism are generally as follows: most of them occur in primiparas. Most of them have a history of placental abruption or artificial rupture of membranes. It is often seen in cases where the uterus contractions are too strong or oxytocin is used improperly. Early embryo separation, placenta previa, uterine rupture or surgical treatment can easily cause amniotic fluid embolism. So what is the basis for the diagnosis of amniotic fluid embolism?

Amniotic fluid embolism can occur after the amniotic fluid ruptures, during or after delivery, as well as during intravenous infusion of oxytocin for induction of labor or during forceps clamping. The pregnant woman may suddenly become restless, shiver, vomit, choke, have difficulty breathing, become cyanotic, or go into rapid shock. If the disease develops suddenly, the patient may die within a few minutes. After the blood pressure of some patients returns to normal, they usually experience postpartum hemorrhage, blood not clotting, and sometimes systemic bleeding, and eventually kidney, lung, and heart failure may occur. Finally, I would like to remind all pregnant mothers that they should pay attention to moderate exercise during pregnancy, which can speed up the process of choosing a normal birth.