What causes dizziness at 35 weeks of pregnancy?

The 35th week of pregnancy is the late stage of pregnancy, and pregnant women should be fully prepared to welcome the arrival of the fetus. During this period, we need the company of our family, so that we can go to the hospital for diagnosis and treatment in time if we have any physical discomfort. If a girl feels dizzy during this period, it may be a manifestation of ischemia in the body and nutritional supplements are needed. So, what causes dizziness at 35 weeks of pregnancy?

1. Hypotension: This is due to the formation of the placenta during the early and middle stages of pregnancy, which diverts part of the blood and causes a slight decrease in the blood volume of pregnant women; compared with the non-pregnant period, it can generally decrease by 5-15 mmHg. Due to the drop in blood pressure, the brain may not receive enough blood, resulting in symptoms such as dizziness, blurred vision and blackouts. Due to the lack of blood supply to the limbs, symptoms such as fear of cold, general fatigue and weakness in the limbs may occur. At this time, the body can improve brain and limb ischemia and hypoxia by increasing heart rate and cardiac output, but pregnant women may also feel palpitations, shortness of breath, and chest tightness. This situation usually occurs around 2 months of pregnancy and returns to normal at 6-7 months.

Countermeasures: Posture movements (the process of changing from lying, squatting and sitting to standing) should be slow to avoid sudden blood supply deficiency to the brain; try to wear tight clothes and elastic socks to help blood return; when dizziness occurs, you can eat salty food and drink more boiled water to increase blood volume; avoid sweating when exercising, and avoid high water temperature when showering to prevent blood vessels from dilating and blood pressure from dropping; do not ride bicycles or motorcycles to avoid dizziness and car accidents; when dizziness occurs, you should sit down or lie on your side to rest immediately, and go to the hospital to ask a doctor for symptomatic treatment if necessary.

2. Supine syndrome: In the late pregnancy, the enlarged uterus can cause the diaphragm to rise, compressing the heart and causing it to shift to the upper left. At the same time, the enlarged uterus can compress the inferior vena cava and obstruct venous return, reducing the amount of blood returning to the heart and the cardiac output. This can lead to cerebral ischemia and hypoxia and cause symptoms such as dizziness and blurred vision. This is more obvious in the supine or semi-recumbent position, while the symptoms are alleviated in the lateral or standing position. If you lie in a supine or semi-recumbent position for a long time, it may also lead to varicose veins in the lower limbs, ankle edema and hemorrhoid formation.

Countermeasures: Try to sit flat. If you feel tired after sitting flat for a long time, you can change to side-lying position, or take a walk indoors or outdoors. In short, try to avoid supine and semi-recumbent positions. Once supine syndrome occurs, you should lie on your side immediately, or slowly sit up after lying on your side, to relieve the pressure of the uterus on the heart and inferior vena cava and restore blood supply to the brain.