What if the baby is born with Down’s syndrome (Down baby)? The amniocentesis is a tangle: if you don’t do it, you’re afraid that you’ll really have a “Down baby”, but if you do it, you’re afraid that the surgery will lead to a miscarriage. The probability of having a fetus with Down’s syndrome in a normal pregnant woman under 35 years old is about 1/800, and if you have a Down’s syndrome screening, you will get a number, which is theoretically the probability of having a fetus with Down’s syndrome. However, the same risk probability is interpreted differently by different people, as a risk of 1/1000 is very high to some people and a risk of 1/100 is very low to others. Since Down’s syndrome screening is essentially a gamble, a bet on probability, it is necessary to follow the rules of gambling. The main principle of gambling is “willing to gamble to lose”: you have to be able to afford to lose before you can gamble, for example, in the face of the 1/250 risk of Down’s syndrome, do not have a lucky break, saying I do not do amniocentesis, because I will not be so unlucky, right, once you lose the bet, the child is really born a “Tang baby “The first thing you need to do is to be honest with yourself. When gambling is not to see how big the win is, but to see if you can afford to lose, can not afford to lose never to gamble, even if the probability is relatively low. If you can afford to lose, even if the probability is 1/50th, you can also face it very frankly. The lesser of two evils If you choose not to do amniocentesis, the result of losing the bet is to give birth to a “Tang baby”; if you choose to do amniocentesis, the worst outcome of losing the bet is to miscarry and then start all over again next time. The theoretical probability of miscarriage with amniocentesis is about 1/300. If you know the consequences and probability of losing the bet, it’s not that difficult to make a decision whether to do it or not, right? In fact, pregnancy is a trial-and-error process, and there are a lot of odds against the mother and the fetus throughout the pregnancy, but most of the risks are manageable as long as the regular maternity checkups are performed. It is better to let your doctor help you with these issues, it is useless for you to worry blindly. Don’t ask “Dr. Baidu” on the internet to add to your worries for no reason, the simpler the happier you are, enjoy your entire pregnancy!