Can I sleep on my back when I am more than four months pregnant?

We all know that pregnant women need to be taken care of with great care. Pregnancy is a time to be careful everywhere. Yes, during this period, our expectant mothers have a lot to pay attention to, even the sitting and sleeping posture needs to be chosen appropriately. So, can you sleep lying down when you are four months pregnant?

Can I sleep lying down when I am four months pregnant?

When pregnant, there are many things that pregnant women need to pay attention to, even sleeping needs to be done with extreme caution. Expectant mothers who are used to sleeping on their backs should pay attention and beware of supine hypotension syndrome, which is a series of symptoms caused by a sharp drop in blood pressure when lying on their back in a special way, and may even cause shock. Generally, the clinical symptoms of expectant mothers with mild symptoms disappear quickly, while those with more severe symptoms may persist until they change their posture.

The level of human blood pressure is related to factors such as cardiac output, circulatory blood flow, vascular afterload, blood viscosity, and vascular elasticity, which are in turn regulated by the central nervous system. As the fetus continues to grow, when it lies flat, the enlarged uterus is compressed by the inferior vena cava, which blocks the blood flow back from the pelvis and inferior vena cava. The amount of blood reaching the heart drops sharply, causing a rapid decrease in cardiac output and a decrease in blood pressure. The enlarged uterus will also compress the diaphragm, causing sympathetic nerve excitement, slowing down the heart rate, dilating heart blood vessels, and also causing a drop in blood pressure. In late pregnancy, the uterus's own water consumption accounts for about 16.67% of the body's total, which will also reduce the amount of blood returning to the heart, thereby lowering blood pressure.

The best sleeping position for pregnant women is to sleep on their left side. This position can turn the right-rotated uterus into an upright position, thereby reducing the resulting abnormalities in the fetal position and delivery of pregnant women. It can also prevent the uterus from compressing the inferior vena cava, increase the cardiac output of pregnant women, reduce edema, improve the blood supply to the uterus and embryo, help reduce premature births, prevent the uterus from compressing the kidney function, and thus benefit the growth and development and eugenics of the fetus.

Pregnant women sleeping position

In the early stages of pregnancy (1-3 months), the fetus grows in the uterus and still lives in the mother's pelvis. It is not easy to be directly compressed by external forces or by itself, so the sleeping posture of pregnant women can be casual, mainly to adopt a comfortable posture.

In the middle and late stages of pregnancy (April to July), you should pay attention to protecting your abdomen to avoid the immediate effects of external force. If a pregnant woman has too much amniotic fluid or is pregnant with twins, she needs to sleep on her side, which can make her more comfortable.

In the late stage of pregnancy (August to October), lying flat is very important. The lying position of pregnant women is closely related to the well-being of themselves and their fetuses. It is recommended that pregnant women sleep on their left side. This supine position can correct the right rotation of the enlarged uterus, relieve the compression of the uterus on the abdominal aorta and iliac arteries, improve blood circulation, increase blood supply to the fetus, and be beneficial to the growth and development of the fetus. But it is not suitable to lie on your back.