Ultrasound of pregnancy 3 trimester. Prices, reviews, ratings
Ultrasound of pregnancy: 3rd trimester
Ultrasound diagnostics reveals the features of the anatomy of the child's body and its intrauterine development. The doctor analyzes the dimensions: length, weight, skeletal system.
The obstetrician-gynecologist evaluates the condition of the placenta, which is responsible for the safety of the baby and the supply of essential nutrients and oxygen to the child's body.
Placental blood flow plays a global role in the normal course of pregnancy. Especially at the stage of the 3rd trimester, vasoconstriction or torsion of the vessels are often detected. This requires medical supervision and adherence to a certain regimen.
When should you do an ultrasound scan in the 3rd trimester of pregnancy?
This screening is not mandatory during a normal pregnancy, but if any problems arise at the previous stages, the next ultrasound scan is scheduled from the 28th to the 34th week. The main objectives of this stage are:
- to detect defects characteristic of late stages;
- to assess the anatomical structure and physiological characteristics of the fetus;
- to determine the presentation and condition of the placenta;
- to predict the upcoming birth.
Ultrasound of the 3rd trimester of pregnancy: the norm and interpretation of results
When analyzing the obtained data, the specialist takes into account the generally accepted normative indicators:
- BPD - 78-82 mm;
- distance from forehead to back of head - 104-110 mm;
- head circumference - from 304 to 317 mm;
- abdominal circumference - within - 286 - 306 mm;
- thigh - 61 - 65 mm;
- shin - 56-60 mm;
- the humerus should normally be from 56 to 59 mm;
- forearms - 49 - 52 mm.
The general condition of the placenta is also specified: its thickness, location, maturity. The amount of amniotic fluid and fetal activity are important.
The term is already long, so special preparation before undergoing an ultrasound scan is not required. The expectant mother leads a normal life, and there is no need to adhere to a specific diet.
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