What is the best sleeping position during pregnancy? What are the dangers of improper sleeping position?

In the mid-term stage of pregnancy, women should be particularly careful in arranging their sleeping positions. So, how to arrange the sleeping position in the mid-term of pregnancy? What are the hazards of improper sleeping position?

What is the best sleeping position during pregnancy?

Experts say that the best sleeping position for pregnant women is lying on the left side, especially in the second trimester.

1. Sleeping in the left lateral position can turn the right-rotated uterus to an upright position, which can reduce the pressure of the pregnant uterus on the aorta and iliac arteries, thereby reducing the resulting fetal position and delivery abnormalities.

2. The left side lying position allows the expectant mother's uterus to maintain normal tension to ensure blood perfusion of the placenta. It can also avoid the uterus from compressing the veins of the inferior cavity, increase the amount of blood output of the pregnant woman, and make it less likely for the pregnant woman to develop lower limb edema and varicose veins of the lower limbs, which is beneficial to reduce premature birth, fetal maldevelopment and other diseases. It is beneficial to the healthy growth and development of the fetus and eugenics.

The dangers of improper sleeping posture:

Impact 1: Leading to insufficient blood supply to the uterus.

After 5 months of pregnancy, the weight and volume of the uterus increase significantly, and the adjacent relationship between the uterus and surrounding organs and blood vessels also changes. Especially after 7 months of pregnancy, the increase in the weight of the pregnant woman and the fetus will cause the enlarged uterus to squeeze large blood vessels in the abdominal cavity, such as the abdominal aorta and inferior vena cava, resulting in insufficient arterial blood supply to some adjacent tissues and organs and obstruction of venous blood reflux, leading to insufficient blood supply to the uterus itself.

Impact 2: Leading to pregnancy-induced hypertension syndrome.

Lying on your back reduces the pressure in the uterine artery and affects the blood supply to the uterus, thereby reducing the blood supply to the placenta. Insufficient blood flow to the uterus causes the ischemic placenta to release a large amount of renin. Renin enters the maternal blood circulation, which can lead to increased arterial pressure, vascular tension, decreased urine output, and even edema, and may lead to pregnancy-induced hypertension.