When a screening analysis in the first trimester of pregnancy is most informative? Doctors determine a fairly fixed period of time from 10 to 13 week.
It is worth saying that the greatest accuracy has a study conducted on the 11-12 week of pregnancy. It is during this period of time that there is a laying of the main organs and systems, and in the blood of the woman the metabolites accumulate, which will indicate the possible pathology.
up to 13 weeks and ultrasonic and biochemical analysis retain their informativeness, it is necessary not to miss this time to diagnose. These time on screening can be revealed:
The first stage of the prenatal screening is the ultrasound diagnosis of the fetus. This procedure can be carried out in two ways: transvaginally (study of the uterine cavity through the rear vaginal arch). Transabdomomomotional (ultrasonic wave passes through the front abdominal wall). It is necessary to carry out manipulation with a bladder filled with a bladder. For this, an hour before the study, it is necessary to drink a large amount of liquid and not empty the bladder. The procedure of ultrasound diagnostics is not felt by the patient. With a transabdominal study, the location of the sensor is processed by gel, which can cause a cold sensation.
Experienced doctors of ultrasound diagnostics of the hemokode clinic immediately will immediately find signs of genetic pathology, but the study protocol indicates the specific dimensions of certain anatomical entities.
Prenatal screening (pregnancy screening) is a survey complex, which includes ultrasound diagnostics (WSD) and (or) biochemical analysis of venous blood for hormones.
Prenatal screening is carried out three times - in the first, second and third trimester. This survey makes it possible to learn about the correct development of the child and makes it possible to detect pathology on the early term of its development and take measures aimed at solving the problem.
In the Medical Center "Paracels" Planned prenatal screening ultrasound diagnostics during pregnancy are carried out in accordance with generally accepted international standards in 11-13 weeks, 20-24 weeks and in 30-34 weeks.
The Ministry of Health of the Russian Federation recommends a screening for the following types of congenital defects in the fetus:
The biochemical screening of the first trimester is included in the complex of research carried out at this stage of pregnancy. Simultaneously with it, the ultrasound diagnosis of the fetus is carried out. Comparison of data obtained during these two surveys ensures that the medical conclusion will be as accurate as possible.
When the term of pregnancy reaches 10-13 weeks, the doctor prescribes specific blood tests. They are aimed at identifying certain gene pathologies.
For the first trimester biochemical screening, venous blood is required. A certain difficulty is that for the study it is necessary for plasma. The process has passed successfully, you need to comply with the following recommendations:
Script 1 trimester shows the likelihood of chromosomal pathologies in the development of the fetus. It is necessary to consider that at the same time with this study, an ultrasound is carried out. Moreover, these two surveys are made in the same clinic, since only in this case can be guaranteed to obtain an accurate result.
It is believed that the biochemical screening of 1 trimester on hCG and RARR-A should show the data in the interval of 0.5-2 minutes. The complexity is that in some laboratories, the results are written in NG / ml for HCG, and in honey / ml for Rarr-p. The latter indirectly depend on the reagents and equipment used.
There are additional studies that it is recommended to assign women with bad screening indicators 1 trimester:
Unionclinic specialists conduct ultrasound screening 3 trimesters of pregnancy
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