What happens when a pregnant woman suddenly faints?

We all know that a woman's body will undergo great changes after she becomes pregnant. Her body is often prone to some problems, and women's nutritional needs during pregnancy are also particularly high. Many women are prone to various diseases due to their physical constitution. Among them, sudden fainting of pregnant women is a common phenomenon. Such a phenomenon poses certain problems to the health of the pregnant women themselves, and is also particularly prone to miscarriage. Let's take a look at what happens when a pregnant woman suddenly faints?

What happens when a pregnant woman suddenly faints?

Dizziness is a common symptom during pregnancy. In mild cases, the head feels heavy and the feet feel light-headed, and walking is unstable; in severe cases, black spots appear in front of the eyes and there is sudden fainting. Dizziness during pregnancy is often caused by a variety of diseases.

Pregnant women with low blood pressure and cerebral ischemia usually faint when they stand up suddenly or take the 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. This temporary lack of blood supply to the brain will gradually improve as the heart rate increases and the cardiac output increases, and the dizziness will gradually disappear. Generally, it will return to normal by the 7th month of pregnancy. Pregnant women like this need to pay attention to self-protection; do not ride bicycles to avoid falling; once dizziness occurs, they should sit down immediately or lie down to prevent the dizziness from worsening; avoid standing for long periods of time to prevent attacks.

Pregnant women who eat too little and have low blood sugar sometimes experience 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. Therefore, this type of pregnant women should eat more breakfast and the quality should be better, such as milk, eggs and so on. At the same time, carry some milk candy with you. Once dizziness occurs, eat the candy immediately. It can relieve the dizziness and also play a therapeutic role.

Improper posture compresses blood vessels. This type of pregnant woman usually suffers from this condition 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. Dizziness can be prevented by simply avoiding lying on your back or sitting in a semi-reclining position. If this happens, you should lie on your side immediately.

In addition, anemia in pregnant women is also a common cause of dizziness in pregnant women.

The above is an introduction to what causes pregnant women to suddenly faint. After understanding it, we know that there are many reasons for this phenomenon, so pregnant women who are prone to this symptom should try not to travel alone. In addition, if the pregnant woman has a poor physical condition during pregnancy, she must pay attention to improving the quality of her diet, and try to get more rest. If she feels unwell, she must go to the hospital for examination and treatment in time.