What causes chest tightness and dizziness in pregnant women? Three most common reasons

In daily life, pregnant women will experience many discomforts in their bodies as their pregnancy period continues to increase. Among them, chest tightness and dizziness are the most common symptoms. So, what causes chest tightness and dizziness in pregnant women?

1. Low blood pressure and cerebral ischemia

This type of pregnant woman usually faints when she stands up suddenly or takes an elevator. In the early and middle stages of pregnancy, due to the formation of the placenta, blood pressure drops to a certain extent, generally 1.33-2.67 kPa lower than usual, which is physiological. For pregnant women with pre-existing hypertension, the drop in blood pressure will be even greater. When blood pressure drops, blood flow to the brain will decrease, resulting in insufficient blood supply to the brain, causing cerebral ischemia and hypoxia, which in turn causes dizziness.

2. Eating too little and low blood sugar

This type of pregnant women sometimes suffer from bouts of dizziness, accompanied by palpitations, fatigue, and cold sweats, which usually occur when they eat less. During pregnancy, I ate less because of the pregnancy reaction - vomiting. Eating less will cause low blood sugar. Blood sugar is the raw material for muscle cells and brain cells to produce energy. When blood sugar is low, cell energy is reduced, leading to fatigue, dizziness, cold sweats, palpitations and other discomforts.

3. Improper body position, compressing blood vessels

This type of pregnant woman usually has an attack when she is lying on her back or sitting on the sofa watching TV, but not when she is lying on her side or standing. This type of dizziness in pregnant women is a condition called supine syndrome. In the late stages of pregnancy, due to the enlarged uterus, when the woman lies on her back or sits lying down, the heavy uterus presses on the inferior vena cava behind it, preventing blood from returning to the heart from the lower body. The amount of blood returning to the heart is sharply reduced, and the cardiac output is reduced, resulting in reduced blood supply to the heart and brain, causing dizziness, chest tightness and other discomforts.