The best sleeping position for expectant mothers during pregnancy

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　　During pregnancy, a pregnant mother has simply become a "glass person". She must be careful about everything. If there is a slight mistake, strange problems may occur. Take sleeping position as an example, ordinary people can sleep in any way, but pregnant mothers cannot.
　　
　　Pregnant mothers who are used to sleeping on their backs should be careful and beware of "supine hypotension syndrome", which is a series of symptoms that cause a sudden drop in blood pressure in a specific supine position, and can even lead to shock. Generally, pregnant mothers with mild symptoms clinical Symptoms disappear quickly, and severe symptoms may persist until you change your body position.
　　
　　1. The level of human blood pressure is related to factors such as the amount of blood discharged by the heart, circulating blood volume, peripheral resistance of blood vessels, blood viscosity, and elasticity of blood vessels, and these factors are in turn affected by nerve System adjustment.
　　
　　2. Late pregnancy, Uterus The amount of blood consumed accounts for about 16.67% of the whole body, which will also reduce the amount of blood returned to the heart, thereby lowering blood pressure.
　　
　　3. The enlarged uterus will also compress the diaphragm, causing vagus nerve excitement, slowing down the heartbeat, dilating the heart blood vessels, and also causing a drop in blood pressure.
　　
　　4. Follow fetus When the uterus is lying on its back, the enlarged uterus compresses the inferior vena cava, blocking the blood return flow in the pelvic cavity and inferior vena cava. The blood reaching the heart suddenly decreases, resulting in a rapid decrease in cardiac output and a subsequent decrease in blood pressure.
　　
　　Although there are many causes, the result is the same: symptoms caused by a drop in blood pressure.