What causes fetal intestinal malformations?

Generally, fetal intestinal malformations may be caused by genetic factors, environmental factors, neural tube defects, congenital tuberculosis, or Hirschsprung's disease. Symptomatic management usually involves general treatment and medication. If physical discomfort occurs, prompt medical attention is necessary to avoid delayed diagnosis and treatment. Detailed explanations are as follows:

1. Genetic Factors

Chromosomal abnormalities in parents may lead to gene mutations that cause fetal intestinal malformations. Prenatal ultrasound may reveal enhanced bowel echogenicity, duodenal atresia, polyhydramnios, and other ultrasound soft markers suggestive of possible fetal chromosomal abnormalities. In addition to intestinal malformations, other organs or systems may also exhibit developmental abnormalities. Pregnant women with a family history of genetic disorders are advised to undergo prenatal genetic counseling and diagnosis.

2. Environmental Factors

Exposure to toxic chemicals or high levels of radiation during pregnancy may lead to harmful substances entering the fetal circulation through the placental barrier after skin absorption, thereby interfering with normal fetal development and causing intestinal malformations. These may be accompanied by systemic symptoms in the pregnant woman such as nausea, vomiting, and fatigue. Pregnant women should avoid exposure to harmful substances. If exposure is unavoidable due to special circumstances, appropriate protective measures should be taken. Regular prenatal check-ups are also recommended to monitor fetal development.

3. Neural Tube Defects

Folic acid is an essential nutrient for neural tube closure. Folic acid deficiency may lead to incomplete neural tube closure, which can affect the normal development of organs such as the intestines, resulting in intestinal developmental abnormalities. These may be accompanied by severe neural tube defects such as spina bifida or anencephaly. Pregnant women should take folic acid tablets, multivitamin tablets, and vitamin B12 tablets under medical guidance to prevent neural tube defects.

4. Congenital Tuberculosis

After maternal infection with Mycobacterium tuberculosis, the infection can be transmitted to the fetus through the placenta, causing congenital tuberculosis and resulting in fetal intestinal malformations. Pregnant women may experience tuberculosis-related symptoms such as low-grade fever, night sweats, and fatigue. Treatment for congenital tuberculosis should be conducted under medical supervision and typically includes anti-tuberculosis drugs such as isoniazid tablets, rifampicin capsules, and pyrazinamide tablets.

5. Hirschsprung's Disease

Hirschsprung's disease is a common type of fetal intestinal malformation, potentially related to genetic factors. It is characterized by the absence of ganglion cells in the distal colon, leading to impaired intestinal muscle contraction. Affected infants may experience symptoms such as constipation, abdominal distension, and vomiting after birth. It is recommended that infants be treated with medications such as lactulose oral solution, domperidone tablets, and modified Simo decoction oral solution under medical guidance.

Pregnant women should maintain proper nutrition and rest to enhance immunity and should undergo regular prenatal check-ups to monitor fetal development.

References

[1] Chen Xiaokang, Lü Guorong, Tang Li. Ultrasound Detection of Fetal Intestinal Development and Its Clinical Significance [J]. Journal of Fujian Medical University, 2008, (02): 95+112.

[2] Yao Jianzhi. The Value of Ultrasound in Detecting Fetal Intestinal Malformations [J]. China Modern Doctor, 2010, 48(22): 131+141.