Many pregnant women after passing the ultrasound of the fetus face such an incomprehensible abbreviation as "BPR", which is present in the results of the study; they begin to get lost in conjecture, which means BDP fetus, whether this rate is normal for their unborn child.
What does BDP fetus mean?
BDP is the biparietal size of the child's head , which is the distance between the opposite parietal bones of the child.
BDP is a characteristic of the size of the fetal head and establishes the level of development of the nervous system that corresponds to the term of pregnancy.
Biparietal size increases in proportion to the period of pregnancy. This indicator is especially pronounced in the first and second trimesters. Each week of pregnancy corresponds to its norm BPR, expressed in mm.
Measurement of the BDP of the fetal head is one of the most accurate methods of determining the duration of pregnancy and evaluating the development of the fetus. Assessment of BDP begins after the twelfth week of pregnancy. After 26 weeks, the reliability of using the results of this method in determining the duration of pregnancy is reduced due to individual developmental features and possible pathologies that affect fetal growth. In such situations, BDP measurement is performed in conjunction with the definition of the abdominal circumference and thigh length.
Deviation of the BDP from the norm
If there is an insignificant deviation of the BDP from the normalized values, then this rather indicates the developmental features of this child.
If the BPR norms are exceeded, the doctor should pay attention to other significant indicators. If the fruit is large, all other dimensions will also be enlarged.
An increase in BDP may indicate certain pathologies, for example, cerebral hernias, tumors of the bones of the skull or brain, hydrocephalus.
With hydrocephalus, a course of antibiotic therapy is conducted. If the treatment does not give the desired effect, and the size of the head continues to grow, then the pregnancy is interrupted.
A decreased BPR value indicates the absence of some brain structures, or their underdevelopment. In this case, pregnancy also requires interruption.
If a reduced BDP is determined in the third trimester, then this may indicate a delay in intrauterine development . Such a state needs urgent medical correction, as it can lead to the death of the fetus.