Now this day and age, although many people was born boy or girl, but that idea after all, to the detriment of our thousands of years, now in rural people or sexism. Then see if they are going to judge the sex of the babies.
The baby long in the naked eye cannot see the mother's womb. Previously, there is no way of knowing what the babies inside looks like, but they used some rules to determine baby sex: the use of traditional methods for forecasting baby sex is adeptly also spread very wide, but unfortunately it is not a scientific test. These methods to predict the probability of successful men and women is approximately 50%, in line with your eyes shut out of guess the same results. These folk methods are:
1. from the pregnant woman's belly-judge: pregnant women's belly-convex, give birth to a boy; belly-perfectly round, having a girl. In fact, pregnant belly and the sex of the babies.
2. observation of pregnant women face and skin changes: If you become pregnant women's looks pretty, skin smooth, probably having a girl; on the contrary, features the ugly, the skin becomes rough and even face full of pimples, there may be health boy. This is a lot of people believe it, but as it turns out reliability.
3. a pregnant woman's tastes change: some people think that taste if pregnant women with different front tire, the sex of the babies. In fact, pregnant women like as sour sweet and sex of the babies is irrelevant.
4. the speed and the strength of the baby heart: it is generally believed that the baby heart strong slower, the babies is a higher probability of boys; on the contrary it is a girl.
These folk guess sex methods, no scientific basis, the probability of making an error.
As modern science and technology and the rapid development, and now there are many ways to detect the babies in the womb of the mother. So, people how to judge the sex of a babies?
1. ultrasonic scanning: ultrasound is a Sonic, to-date report displays, it has no adverse effects on embryo, so in obstetrics and Gynecology territories use is very common. Ultrasonic diagnosis of baby sex, baby accurate up to 95 percent, baby reliability only 85 per cent.
2. amniocentesis: amniocentesis is primarily for diagnosis of baby chromosomal aspects or whether there is a neural tube defect, usually in 16-20 weeks pregnant. As you can tell the baby chromosomes, so also to know the sex of the babies. Up to 99% accurate, but there is a 1% chance of miscarriage. So, what doctors disagree just to measure baby sex do amniocentesis.
3. jianshu: cashmere in mining, also known as "the villi sampling of", usually within 8 to 10 weeks pregnant when they do. The main purpose and amniocentesis, for diagnosis of baby chromosomes correctly, but others used to diagnose the sex of the babies. Up to 98% accuracy rate. Use the villi mining jianshu although pregnant 10 weeks to determine baby sex, but it may cause abortion (3% to 5%), may also cause harm to the babies, its limbs broken. For this reason, it is best not to measure baby sex and accept this kind of inspection.
4. the normal saline uterus: this is a similar approach in recent years the more practical, usually in pregnant 9 weeks. So far, the security, reliability and up to 98%. But it can only tell men and women, there is no way to know whether the baby chromosomes are, and in the week prior to the check is not sexual reduces errors.
5. a blood test: can make use of genetic engineering techniques, to take the mother's blood to determine the sex of the babies. This test does not have any risk to the babies, and reliability of up to 98%. As long as the pregnant full 8 weeks you can extract maternal baby sex.
Although the basis for these medical methods to check out the sex of the babies, but also error. In medicine is not 100%, can reach 98% is already very high accuracy. A blood relative to shave down the amniotic fluid, a difference of 1% accuracy, but 99% of the detection method also occasionally an error results. Therefore, we recommend that you if you want to know the sex of a babies as soon as possible, so it is best to choose a pregnant period is short, to the babies and pregnant women are not hurt.
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