The hit show "Where Are We Going, Dad?" has brought its five celebrity babies into the spotlight. Tian Liang's daughter, Sen Die, has become famous for her crying skills, leaving even her father helpless. So, is Sen Die's tendency to cry due to a congenital condition or learned behavior? Recently, her mother, Ye Yiqian, revealed on Weibo that Sen Die's frequent crying might stem from low amniotic fluid during the late stages of pregnancy.
Regarding Sen Die's crying, her mother Ye Yiqian explained on Weibo that Sen Die's insecurity might stem from a difficult birth due to low amniotic fluid. Doctors also indicated that children born this way often develop insecurity as they grow up, feeling nervous and shy around unfamiliar places and people, and taking longer to adapt to new environments.
This issue—that low amniotic fluid during pregnancy causes babies to lack security—sparked heated discussions among netizens. Some supported this theory, citing numerous similar cases they knew of, while others expressed skepticism, arguing that young children inherently have weaker security feelings regardless of amniotic fluid levels. So, what exactly is amniotic fluid? What does it do?
Amniotic fluid refers to the liquid within the amniotic cavity of the uterus during pregnancy.Throughout pregnancy, it is an indispensable component for sustaining fetal life. Amniotic fluid is 98% water, with the remaining 2% consisting of inorganic salts, organic compounds, and shed fetal cells.
What are the functions of amniotic fluid?
1. Protects the fetus, allowing it to grow in a stable environment of consistent pressure and temperature.
2. Prevents external bacterial infections and minimizes their impact if they occur.
3. Acts as a lubricant, preventing excessive dryness in the birth canal during delivery.
4. Reduces pressure on the fetus during uterine contractions, distributing the force more evenly.
5. Forms a fluid sac that softens and dilates the cervix and birth canal during labor, minimizing trauma to the mother.
6. Serves as a primary indicator for assessing fetal health and gender.
Amniotic fluid volume below 300ml in late pregnancy is termed oligohydramnios. What causes this condition?
Causes of oligohydramnios:
1. Fetal malformations: Conditions like congenital renal agenesis, renal hypoplasia, or ureteral/urethral strictures may cause reduced urine output or anuria, leading to low amniotic fluid.
2. Post-term pregnancy: During post-term pregnancy, placental function declines, leading to insufficient perfusion and fetal dehydration, resulting in reduced amniotic fluid. Some scholars also suggest that in post-term pregnancies, fetal overmaturity increases renal tubular sensitivity to antidiuretic hormone, causing decreased urine output and subsequent oligohydramnios. The incidence of oligohydramnios due to post-term pregnancy reaches 20%–30%.
3. Fetal Intrauterine Growth Restriction (IUGR): Oligohydramnios is a characteristic feature of IUGR. Chronic hypoxia triggers fetal hemodynamic redistribution, prioritizing cerebral and cardiac perfusion while reducing renal blood flow. Consequently, decreased fetal urine production leads to low amniotic fluid volume.
4. Amniotic membrane pathology: Electron microscopy reveals thinning of the amniotic epithelial layer in oligohydramnios, with epithelial cell atrophy, shortened and thickened microvilli, swollen apical ends, reduced cell numbers, and squamous metaplasia. The rough endoplasmic reticulum and Golgi complex within cells are diminished, and desmosomes and hemidesmosomes between epithelial cells and the basement membrane are reduced.Some cases of unexplained oligohydramnios may be associated with amniotic membrane pathology.
Having understood the functions of amniotic fluid and the causes of oligohydramnios, let us return to the main question: Does low amniotic fluid volume truly result in insecure, tearful babies?
Experts: No authoritative studies link low amniotic fluid to insecurity
Relevant experts state that no authoritative scientific research currently confirms a connection between low amniotic fluid volume and a child's subsequent so-called "insecurity."Amniotic fluid during mid-to-late pregnancy originates from fetal urine, and its absorption primarily relies on fetal swallowing. This fluid maintains a dynamic equilibrium through fetal swallowing and urination. Fetal urine output is linked to placental function—only a healthy placenta ensures normal fetal growth and sufficient urine production to sustain adequate amniotic fluid levels. Thus, amniotic fluid balance is intrinsically connected to placental function.
Experts state that amniotic fluid volume serves as a mirror reflecting fetal growth and placental function. While excessive amniotic fluid is problematic, insufficient amniotic fluid is also a high-risk pregnancy indicator. Oligohydramnios refers to amniotic fluid volume below 300ml in late pregnancy, occurring in approximately 4% of cases. Due to its severe impact on perinatal safety, it receives significant attention from obstetricians.Regarding whether it relates to personality, there are no authoritative studies or reports on this matter.
While oligohydramnios may not necessarily cause the baby to lack a sense of security, it can indeed harm the fetus.
Risks of oligohydramnios to the fetus:
1. Low amniotic fluid in early pregnancy: May lead to fetal malformations.
2. Low amniotic fluid in mid-to-late pregnancy: Prone to causing fetal lung diseases.
During mid-to-late pregnancy, insufficient amniotic fluid diminishes its protective cushioning effect. Consequently, uterine pressure directly impacts the fetus. Without timely intervention, this may result in conditions like torticollis, kyphosis, macrognathia, or limb deformities.Additionally, it may compress the fetal chest wall, impairing lung expansion and causing pulmonary hypoplasia. This increases the risk of neonatal respiratory distress syndrome after birth.
During labor, insufficient amniotic fluid may cause umbilical cord compression during contractions, leading to fetal distress or neonatal asphyxia. If accompanied by cloudy amniotic fluid, the risk escalates significantly, potentially causing neonatal aspiration pneumonia, airway obstruction, or even life-threatening complications.