Some parents will have some questions when they see the checklist of the newborn baby. Why are there still echocardiographic examination items? Haven’t you done it before giving birth? After checking it out, no abnormality was found. So is neonatal echocardiography necessary? Here we take a look.
With the continuous update of Doppler ultrasound technology, prenatal diagnosis is more efficient and accurate, and echocardiography has gradually become one of the indispensable methods for the diagnosis and screening of fetal malformations during pregnancy. Therefore, the ultrasound Doppler examination of the fetus during pregnancy can understand the fetal malformations as soon as possible. Once the fetal vital organs are found to have malformations, corresponding interventions can be carried out. This is an important content in the law of eugenics. Can improve the quality of the population. Because Doppler ultrasound technology is simple, fast, accurate and does not cause pain to pregnant women, ultrasound Doppler technology has become the first choice for fetal diagnosis in clinical production.
Prenatal ultrasound examination requires the patient to take a supine position. The first step is to check the overall development and growth status of the fetus. The second step is to diagnose the position, thickness, placental level, amniotic fluid index, etc. of the placenta. The third step is to diagnose the double parietal diameter of the fetal head and the length of the tibia. If an abnormal condition in the fetus is diagnosed, further systematic diagnosis of the abnormal organs is required to determine whether the fetus has malformations. When examining the condition of the fetal heart, the ultrasound probe should be parallel to the direction of the heart, first perform a longitudinal scan, and then perform a 90-degree rotation inspection of the section.
The limitations of prenatal ultrasonography require neonatal echocardiography to compensate
Some structural heart diseases are difficult to find abnormalities during the fetal heart ultrasound examination, and some heart diseases are not obvious during the fetal period and are difficult to detect through the fetal heart, which to a certain extent makes the fetal heart examination exist Certain limitations.
During the prenatal examination, the focus of the examination mainly focuses on whether there is a defect in a single ventricle, whether the left ventricle is developing normally, whether there is an abnormality of large blood vessels, etc., and the opening of the fetal foramen ovale will not be examined. The focus of neonatal examination is to make up for the limitations of prenatal examination, which means that neonatal examination is mainly to find diseases that are difficult to diagnose by prenatal examination, such as ventricular septal defect, coarctation of aortic arch, and myocardial disease.
There is a certain difference between newborns and fetuses in terms of blood circulation. This difference will affect the ultrasound examination. That is to say, the results of the ultrasound examination of the fetus are different from the results of the neonatal ultrasound examination. Will affect the diagnosis of the disease.
For the fetus, there are three main circulation channels, namely, foramen ovale, arterial catheter, and venous catheter. The environment that the fetus is in before and after birth changes greatly. Before birth, it is in the mother’s body and is provided with nutrition by the placenta. After birth, its nutritional supply will be transferred from the esophagus, and its lungs will be closed. In turn, a new circulation of blood flow in the heart is produced, which better adapts to the independent body. However, in some infants, the arterial duct cannot be closed in time, and the foramen ovale may continue to exist, which will induce congenital heart disease. Under normal circumstances, the foramen ovale and arterial duct will be closed after a baby is 1 year old, and some babies will be completely closed at 3 years old.
In other words, when the fetus is examined, all aspects may be normal without any abnormalities, but after delivery, the foramen ovale and arterial duct of the newborn are not closed in time, and they continue to exist, which will induce Congenital heart disease, that is to say, when the newborn is undergoing echocardiography, these abnormal phenomena can be observed, and the disease can be detected early.
These conditions in newborns require echocardiography
It is observed that the newborn’s lips are purple, there is cyanosis, there is a murmur in the heart, or the newborn’s breathing is not smooth, the pulse is abnormal, etc. This is very likely to indicate that the newborn’s heart has diseases, such as cardiomyopathy and endocarditis. Wait, it needs to be checked to understand the specific situation of the newborn.
Parents should pay attention to care after the baby is born, and observe whether the baby’s diet, stool and body temperature are normal. It is necessary to create a warm, harmonious, comfortable and quiet sleeping environment for the baby, so that the child can develop a good life and rest habits, and ensure the quality of sleep and sufficient sleep time.
Parents don’t have to worry if the baby needs a heart color Doppler ultrasound. This examination will not cause harm to the baby’s body. Infant color Doppler ultrasound is usually performed by taking sedative drugs. By taking sedative drugs, the color Doppler ultrasound examination can be completed while the child is sleeping. The examination process will be more detailed and the examination results will be more accurate, which is helpful for doctors to screen for symptoms.