How many weeks does the deformalization examination usually take?

Abnormal examination is an important examination during pregnancy. It can help pregnant women understand the development of the fetus and detect possible malformations early. For deformity problems, the sooner they are discovered, the better, so that they can be better handled.

Large row deformity inspection (NT inspection)

Duration: 14 weeks gestation to 22 weeks gestation

Method: Measure the thickest part of the subcutaneous anechoic transparent layer of the fetus neck by B-ultrasound

Purpose: To assess whether the fetus may have Down syndrome

Follow-up: If the NT test result is greater than 3 mm, there may be a risk of chromosomal abnormalities that requires further examination, such as non-invasive DNA testing or amniotic fluid puncture

Small platoon inspection

Time: 20 to 28 weeks gestation

Characteristics: At this time, the examination results are usually accurate and can clearly detect the development of the fetus

Suggestion: Pregnant women should have regular prenatal examinations during pregnancy, including small row abnormalities, blood routine examinations, two-dimensional ultrasound examinations, etc.

tEarly pregnancy abortion examination

Time: 7 to 13 weeks

Method: Double screening, using serum pregnancy-associated protein-A and human chorionic gonadotropin or free β-hCG as indicators

Abnormal removal examination during the middle trimester

Time: 14 to 20 weeks

Method: Double screening or triple screening, using serum alpha-fetoprotein AFP and human chorionic gonadotropin or free β-hCG as indicators

Characteristics: Double screening during the middle trimester is the most effective prenatal screening program for Down's syndrome

Three-dimensional Color Super

Time: About 24 weeks

Features: Through the three-dimensional dynamic display of color Doppler ultrasound diagnostic instrument, it can clearly display the three-dimensional shape, surface characteristics, and spatial position relationship of suspicious structures

Ergmatic elimination examination in the second trimester of pregnancy

Time: 24 to 32 weeks

Purpose: Clearly display various organs of the fetus, understand the growth and development of the fetus, and observe whether the general structure of the head, limbs and organs has any abnormalities

Note Event

Rest and Nutrition: Pregnant women should pay attention to rest and avoid overwork. At the same time, they should pay attention to balanced nutrition and eat more foods rich in protein, vitamins and other nutrients.

Living habits: It is recommended that pregnant women develop good living habits, work and rest regularly, avoid staying up late, focus on light diet, and avoid eating irritating foods.

Regular prenatal check-ups: Pregnant women should go to the hospital regularly for prenatal check-ups to understand the growth and development of the fetus.

tPurpose of the defect removal inspection

1. Fetal facial malformations: Early detection and identification of facial malformations such as cleft lip, cleft palate, micrognathia, and nasal bone loss.

2. Limb deformity: Look for abnormalities such as short limb deformity and conjoined deformity.

3. Skeletal development abnormalities: Detection for serious defects in bone development such as femur, tibia, fibula, humerus, pubic bone, radius, etc., including fatal achondroplasia and severe open spina bifida.

4. Nervous system malformations: Identify nervous system malformations such as anencephalia, severe hydrocephalus, hydrocephalus, microcephaly, severe encephalocele, and lobed non-schizencephaly.

5. Digestive system malformations: Digestive system malformations such as umbilical enterocele, visceral ectropion, intestinal atresia and megacolon were found.

6. Urinary system malformations: Observe urinary system abnormalities such as hydronephrosis, polycystic kidney disease, giant bladder and urethral obstruction.

7. Cardiac development abnormalities: Detect cardiac development abnormalities such as visceral ectropion, single chamber heart, and four-chamber heart caused by severe chest and abdominal wall loss.

8. Other malformations: Observe other malformations such as severe lymphocystis, severe craniocerebral malformations, and teratoma with a diameter of more than 5 cm.