Nowadays, doctors refer to every pregnant woman to an ultrasound scan. The standard implies three ultrasound examinations, regardless of the presence of complaints, even if the fetus is rated as healthy.
The so-called perinatal screenings include, in addition to ultrasound, a biochemical blood test of the expectant mother. Why screening for 2 trimesters is needed, and what are the standards for ultrasound, how long it is performed and why - we will talk about this and another in this article.
When is ultrasound prescribed?
The first screening is done from the 10th to the 14th week of pregnancy, and often only this study involves a double test: in addition to ultrasound, an analysis of the venous blood of a pregnant woman is performed.
The results of such a procedure with an accurate statistical probability determine how possible the development of dangerous abnormalities in the fetus.
Second ultrasound screening, as a rule, does not include other tests. The exception is a suspicion of pathology during the first study or women of the so-called risk groups. An ultrasound of 2 trimesters is done from the 18-20th to the 24th week from the last menstruation. Compliance with the exact terms is very important since if they are inconsistent, the interpretation of ultrasound is considered inaccurate.
And finally, the third screening corresponds to the 3rd trimester of pregnancy, performed from the 30th to the 34th week.
Who needs a second screening, and why?
Level 2 ultrasound cost in Delhi in our country is prescribed for every pregnant woman, regardless of the presence of complaints. But you should be especially careful with the study of pregnant women at risk.
- First pregnant women over 35 years old;
- Closely married persons;
- Pregnant women with a burdened obstetric and gynaecological history;
- Parents with alcoholism and drug addiction.
But all other expectant mothers should treat the second ultrasound screening responsibly so as not to miss the occurrence of a threatening pregnancy pathology at an early stage. Correspondence of the screening result and the ultrasound norm will allow the woman to feel calm, realizing that everything is in order with her and the child.