Why do babies have congenital microtia?
0 1 What are the symptoms of microtia?
The external manifestations of microtia are ear contour hypoplasia, atresia of external auditory canal and middle ear malformation.
Microauricular malformation can be divided into unilateral and bilateral microtia.
Patients with severe microtia have no ears, and patients with mild microtia have similar contours to the external ear, but are obviously smaller than normal ears.
Formation factors of microtia
The development time of the baby's ear starts from the sixth week of pregnancy. When the pregnant mother is pregnant for two to three months, the contours of the baby's outer ear, middle ear and inner ear are basically formed.
During this period, if there is abnormal development, there will be symptoms of microtia. The incidence of microtia in China is about 5. 18: 10000. The ratio of single and double sides is about 8: 1.
There are many reasons for microtia. At present, the medical community has not attributed the specific single cause to the main factor leading to microtia. Environmental, chemical and genetic factors may lead to microtia:
environmental factor
The most common environmental factors include radiation and environmental pollution. Pregnant mothers are infected with pathogenic viruses such as cold virus and herpes zoster virus in the early stage of pregnancy, or pregnant mothers suffer from immune system diseases and diabetes, which may lead to microtia.
chemical factor
It is also possible that the mother took anti-cold drugs, antibiotics, hormones or potassium tretinoin in the first trimester, which led to microtia.
In addition to drugs, regular exposure to alcohol and tobacco during pregnancy will also become a susceptible factor for microtia.
hereditary factor
Most cases of infantile microtia are sporadic, and only a few cases are familial. At present, microtia caused by genetic factors is still controversial in academic circles.
According to cytogenetic analysis at home and abroad, most patients with microtia have normal karyotypes, but there are also a few reports of hemichromosomal abnormalities.
Objectively speaking, the formation of microtia is the result of many factors, so parents should not blame themselves too much.
Parents of babies with microtia don't have to worry. At present, China's ear reconstruction is at the leading level in the world. Ear reconstruction surgery can use biomaterials and autologous materials to reconstruct the outer auricle, and the influence of microtia on the baby will be minimized.
Pregnant mothers know what to pay attention to during pregnancy.
Pregnant mothers should try not to take all kinds of anti-cold drugs or antibiotics in the first trimester, and should follow the doctor's advice when taking drugs.
Pregnant mothers should try to stay away from areas with serious environmental pollution.
Pregnant women are not allowed to touch alcohol and tobacco during pregnancy.
It is forbidden to give mental stimulation to pregnant mothers.
For more information about microtia, please pay attention to getting information.
Please share it and let more friends in need see it!