What causes dizziness, nausea and vomiting in late pregnancy?

It is normal to experience dizziness, nausea and vomiting in the early pregnancy. However, some pregnant women experience dizziness, nausea and vomiting in the late pregnancy, which is an abnormal phenomenon. Therefore, if pregnant mothers experience this situation in the late pregnancy, they must find out the cause, take timely measures and respond positively to avoid serious consequences. The following specifically introduces what causes dizziness, nausea and vomiting in the late pregnancy.

1. What causes dizziness, nausea and vomiting in the late pregnancy?

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 and vomiting.

2. Eating too little leads to low blood sugar. This type of pregnant women sometimes experience paroxysmal dizziness and vomiting, 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, nausea, cold sweats, palpitations and other discomforts.

3. Improper body position causes compression of 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. The dizziness and vomiting experienced by this type of pregnant woman is a symptom of 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 decreases sharply, and the cardiac output decreases, leading to a decrease in blood supply to the heart and brain, causing dizziness, nausea, chest tightness and other discomforts.

4. Anemia in pregnant women is also a common cause of dizziness and vomiting in pregnant women. Pregnant women should usually consume iron-rich foods, such as animal blood, pork liver, lean meat, etc. Once anemia occurs, iron supplementation should be done urgently. Pregnant women may also experience symptoms such as dizziness, vomiting, and headaches. If the disease further develops into preeclampsia, it can cause convulsions and coma, endangering the lives of pregnant women and fetuses. This is the most serious complication during pregnancy and should be diagnosed and treated early.

2. What to do if pregnant women feel dizzy and want to vomit in the late stage

1. To supplement nutrition, eat small meals frequently.

2. Have regular prenatal checkups and measure blood pressure and blood iron levels to see if they are normal.

3. Don’t maintain the same posture for a long time.

4. When entering the second half of pregnancy, expectant mothers should try to lie on their left side.

5. Move slowly when getting up from lying down or sitting.

6. If you feel dizzy or nauseous, you should rest more. You can lie flat on your back with your head and slightly raise your legs.