High school students sit for a long time with swollen legs and feet, and standing for a long time le

Analysis: Leg swelling is edema and edema of the lower limbs, which can be caused by many reasons. 1. Renal edema.

In acute nephritis, chronic nephritis or kidney disease, due to the decrease of renal blood flow, sodium and water retention, increased capillary permeability, and too much protein loss in the urine, it will cause the plasma colloidal osmotic pressure to decrease, so that the interstitial space has accumulated and caused edema. 2. Cardiogenic edema. When right heart failure occurs in various heart diseases, the venous pressure rises due to the inability of venous blood to return smoothly, and body fluid leaks into the interstitial space, causing edema.

3. Hepatic edema. In cirrhosis, the liver is destroyed, the portal venous return is blocked, and the portal venous pressure increases.

Guidance: Factors such as high and low plasma albumin in liver failure can cause edema. 4. Dystrophic edema.

5. Localized edema of the lower limbs. It is mostly caused by the obstruction of the veins and lymphatic vessels of the lower limbs, resulting in the entry of body fluids into the interstitial space, and the embolic phlebitis, lymphangitis, filariasis, pelvic or lower limb tumors compress the veins. It can be seen that there are many causes of leg swelling, which can be a symptom of systemic diseases or one of the symptoms of local diseases of the lower limbs.

Problem analysis: Edema is caused by kidney or heart disease, but sometimes ascites due to liver disease, nutritional disorders caused by insufficient protein, or hormonal abnormalities such as menopausal disorders can also cause edema. If the swelling starts on the face and spreads to the whole body, there is a high risk of kidney disease, but it is also possible to develop acute nephritis or kidney disease.

If the swelling starts from the feet, it may be heart disease, hypoproteinemia, cirrhosis, etc.

Advice: It is recommended to absorb more calcium on weekdays to help eliminate excess water produced by salt in the body. Foods rich in calcium include apples, corn, lentils and hard tofu.

To eliminate edema, massage techniques should be slightly forced, and mainly push and rub to accelerate metabolism.

1. From bottom to top, rub your legs vigorously with the palms of your hands.

2. Bend the knees, push the inner fat with the ring fingers of both hands, slowly push it up from the ankle for about 5 minutes, and then press the calf with your hand for 3 minutes.

3. Finally, wrap your calves with both palms and gently massage upwards to soothe your muscles.

You can soak your feet in warm water and then massage the soles of your feet to promote blood circulation in your feet.