During pregnancy, a woman is faced with a series of studies related to assessing the state of both her own health and the health of the fetus. One such study is the fetometry of the fetus.
Fetometry is a procedure for measuring the size of the fetus at different times of pregnancy, and then comparing the results with the normative indicators that correspond to a certain period of pregnancy.
Fetometry is carried out as part of an ordinary ultrasound study.
Comparing the fetometric data of the fetus for weeks, it is possible to determine the exact period of pregnancy, weight and size of the fetus , to estimate the volume of amniotic fluid and to diagnose the developmental disorders of the child.
To determine the gestation period for fetometry and the conformity of the fetal size with the normalized values, there is a special table.
Decoding of Fetal Fetometry is limited to the establishment of fetal parameters such as:
- head circumference (OG);
- biparental dimension (BPR);
- circumference of the abdomen (OJ);
- length of thigh (DB);
- coccygeal parietal size (CTE).
With a gestation period of up to 36 weeks, the most indicative are the parameters of OLC, DB and BPD. At later terms, in the analysis of ultrasonic fetometry, the doctor relies on DB, OC and OG.
Fetal Fetometry Chart by Week
In this table the norms of fetometry of the fetus are presented for weeks, on which the physician is guided by ultrasonic fetometry.
Duration in weeks | BDP | DB | OG | Duration in weeks | BDP | DB | OG |
eleven | 18 | 7th | 20 | 26th | 66 | 51 | 64 |
12 | 21 | 9 | 24 | 27th | 69 | 53 | 69 |
13 | 24 | 12 | 24 | 28 | 73 | 55 | 73 |
14 | 28 | 16 | 26th | 29 | 76 | 57 | 76 |
15 | 32 | 19 | 28 | thirty | 78 | 59 | 79 |
16 | 35 | 22 | 24 | 31 | 80 | 61 | 81 |
17th | 39 | 24 | 28 | 32 | 82 | 63 | 83 |
18 | 42 | 28 | 41 | 33 | 84 | 65 | 85 |
19 | 44 | 31 | 44 | 34 | 86 | 66 | 88 |
20 | 47 | 34 | 48 | 35 | 88 | 67 | 91 |
21 | 50 | 37 | 50 | 36 | 89.5 | 69 | 94 |
22 | 53 | 40 | 53 | 37 | 91 | 71 | 97 |
23 | 56 | 43 | 56 | 38 | 92 | 73 | 99 |
24 | 60 | 46 | 59 | 39 | 93 | 75 | 101 |
25 | 63 | 48 | 62 | 40 | 94.5 | 77 | 103 |
According to the table, you can find out what fetometric parameters of the fetus should be at any time of pregnancy and establish whether there are deviations in the fetus from the standards of fetometry that correspond to the given date.
Based on the data given, we can say that the following fetal sizes are considered the norm of photometry indices at a time, for example, 20 weeks: BPR-47 mm, OG-34 mm; 32 weeks: BPR-82 mm, OG-63 mm; 33 weeks: BPR-84 mm, OG-65 mm.
The parameters of the fetometry by the weeks that are given in the table are the averaged values. After all, every child develops in different ways. Therefore, it is hard to worry, if the established size deviates somewhat from the norms of fluorometry, it is not worth it. As a rule, the fetometry of the fetus is prescribed to a woman on the terms of 12, 22 and 32 weeks of pregnancy.
Fetometric results of fetus
Ultrasound of fetometry plays an important role in the diagnosis of intrauterine growth retardation. The presence of this syndrome is said in the event that the parameters of the fetus are lagging behind the established standards for more than 2 weeks.
The decision to make such a diagnosis is always made by the doctor. In this case, the doctor must be a professional in his business, so that the probability of error is minimized. He should take into account the state of the woman's health, the standing of the bottom of her womb, the work of the placenta, the presence of genetic factors and so on. As a rule, the availability of
If the doctor, after calculating the fetometric parameters of the fetus, discovers pathologies in his development, then the woman should be given certain procedures in order to minimize possible deviations in the child's development. The level of development of medicine at the present time allows performing rather complicated surgical operations even for a fetus located in the mother's womb, through the placenta. But the most important thing at the same time is to correctly determine the duration of a woman's pregnancy and take into account her physiological characteristics.