How To Easily Calculate TBJ (Betin's Heavy TAX)

YOGYAKARTA - Heavy Taxi Janin (TBJ) is a heavy estimation of the baby that is still in the womb. This information is very important for doctors and midwives to monitor fetal growth and prepare the delivery process. Many pregnant women want to know how to calculate TBJ to understand the development of the fetus. In this article, we will discuss the method of calculating TBJ which is often used, its benefits, and when is the right time to make these measurements.

What Is Heavy Taxi (TBJ)?

TBJ is an estimate of the weight of the baby in the uterus which is calculated based on various parameters, such as the height of the uteri (TFU) function and the circumference of the mother's abdomen. Although this is only an estimate, this method is quite accurate and is often used by medical personnel to ensure the fetus grows well according to pregnancy age.

The Importance Of Knowing TBJ

1. Monitoring JaninTBJ's Health helps monitor whether the fetus grows according to pregnancy age. Fetals that are too small or large can indicate health problems.

2. Persalinan Preparation Knowing the estimated fetal weight can help determine the safest type of delivery, whether it is normal or requires caesarean surgery.

3. Early detection of significant difference in pregnancy complications between TBJ and gestational age can indicate the risk of complications such as macrosomia (large zinc) or intrauterine growth restoration (IUGR), which is the condition in which the fetus grows slower than it should.

The method uses high utility function (TFU) to estimate the weight of the fetus:

Formula: TBJ (gram) = (TFU - n) \times 155

TFU is the height of the uteri function in centimeters, which is measured from the pubic bone to the upper part of the uterus.

n is a constant:

n = 11 for babies in head positions below (head presentation).

n = 12 if the baby's head has not entered the pelvis.

Examples of Calculations:

If the height of the uteri function is 32 cm and the baby's head has entered the pelvic, then: TBJ = (32 - 11) \times 155TBJ = 21 \times 155TBJ = 3,255 grams

Estimated fetal weight is 3,255 grams or about 3.25 kg.

Risanto's method is more often used in Indonesia because it is simple and practical.

Formula: TBJ (gram) = TFU\times 100

Example: If the height of the uteri function is 30 cm, then: TBJ = 30 \times 100TBJ = 3,000 grams

This method provides rapid estimation results, although its accuracy can be influenced by other factors, such as the size of the mother's body and the amount of fluid.

The most accurate method for calculating TBJ is with an ultrasound, which measures the following parameters:

The ultrasound machine will calculate the fetal weight based on these measurements using certain programming formulas on the device.

Factors That Affect TBJ

When Should TBJ Be Calculated?

TBJ is usually calculated from the third trimester, when the fetus grows rapidly and the preparation for childbirth is getting closer. Periodic examinations help ensure that fetal growth remains normal.

Knowing how to calculate TBJ is very important to monitor fetal health and prepare the delivery process. The Johnson-Toshach and Risanto method is a simple way that is often used, while ultrasound provides more accurate results. However, the results of TBJ are only an estimate and should always be consulted with medical personnel for the best decision-making. By monitoring TBJ regularly, pregnant women can ensure that the fetus grows healthy according to pregnancy age.

In addition, read also: Development of the fetus at the Age of 7 Months of Pregnancy

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