Pregnancy 28 weeks - development of the fetus

At 28 weeks ( 7 months pregnant ), the fetus is still deeply premature, but sometimes premature birth occurs at this time. And with proper prenatal preparation and proper postnatal care in a specialized department for premature babies, the child has every chance to survive and grow and develop properly in the absence of a serious congenital pathology. Since childbirth at this time is not uncommon, the development of the fetus at this time is well known.

28th week of pregnancy and fetal size

The height of the child born in this period is 33-38 cm, the weight of the fetus fluctuates in the 28 weeks of pregnancy between 1100 and 1300.

Dimensions of ultrasound in the 27 - 28 weeks of pregnancy

The development of the fetus at this time corresponds to the average description of the development of a child born in 28 weeks. The main sizes that help determine the duration of pregnancy:

• BDP (biparietal size of the skull) 69.2 - 71.9 mm;
• LTE (frontotemporal size of the skull) 88 - 91mm;
• DB (femur length) 50.9 - 52.9 mm;
• SDHK (mean diameter of the chest) 62.9 - 66.7 mm;
• SJ (mean diameter of the abdomen) 71.3 - 75.4 mm;
• thickness of the placenta 30,6 - 31,3 mm.

Dimensions of ultrasound at 28 - 29 weeks of pregnancy

Fetal development corresponds to the average description of the development of a child born on week 28, the main dimensions that help determine the gestational age:

• BDP (biparietal size of the skull) 71.9 - 75.1 mm;
• LTE (frontal parietal size of the skull) 91 - 94 mm;
• DB (length of the thigh) 52.9 - 55.1 mm;
• SDHK (average diameter of the chest) 66.7 - 69.0 mm;
• SJ (mean diameter of the abdomen) 75.4 - 78.0 mm;
• thickness of the placenta 31.3 - 32.1 mm.

In both cases, the placenta is usually 2 degrees of maturity, without any inclusions, the height of the amniotic fluid in a place free from the fetal parts should not exceed 70 mm. All 4 chambers are clearly visible in the heart, the course of the main vessels is correct, the fetal heart rate is rhythmic at the 28th week of gestation, 130-160 per minute, the head is present, the buttocks are less often, the fetal movements are active, on average, up to 15 per hour.

Fetal development at 28 weeks of gestation A child born in this period has signs of prematurity. Its lungs are not yet sufficiently covered by a surfactant and can only partially open up. The skin is red, covered with primordial fluff almost without subcutaneous tissue, and the child can not independently regulate body temperature. The eye membrane is partially or completely resorbed and the eyes are open. Cartilages in the auricles are soft. The boys do not have testicles in the scrotum, the girls do not cover the large labia lips with the small ones.

In the following weeks, the fetus must continue to develop in the womb, but even during this period the child born has a chance to survive, but for the mother, birth can be dangerous because of the possibility of premature detachment of the placenta , mild labor and unpreparedness of the birth canal.