What is the connection between blood pressure and edema?

Blood pressure and edema, a type of swelling that occurs when fluid leaks into the interstitial spaces of the body, are closely related. Both high and low blood pressure can contribute to, as well as be associated with, edema, and treatment of edema may involve blood pressure control. People can limit their risks of developing edema by keeping their blood pressure in a healthy range. People at risk of edema, such as pregnant women and people with heart failure, should watch for the signs so they can get treatment as quickly as possible.

There are several reasons why fluid can leak from the blood vessels into the interstitial space. Vessels can become weak and leak fluid, and an imbalance of salts in the body can cause fluid to be pulled out of the vessels as the body attempts to return to an isotonic state, where the balance of salts on both sides of the vessels sanguine. is the same. High and low blood pressure are related to damage to blood vessels and the development of imbalances in the composition of body fluids.

In the case of high blood pressure and edema, high blood pressure causes blood vessels to leak, leading to localized edema. The loss of fluid causes the kidneys to retain more fluid as they work to maintain the necessary balance of salts in body fluids. This makes the edema worse, as excess fluid will continue to leak out of the damaged vessels and more fluid will be retained to replace it. People with high blood pressure, also known as hypertension, can develop edema anywhere in the body and are at risk for a dangerous form called pulmonary edema.

Low blood pressure and edema may also be related. People with certain chronic conditions that put them at risk for edema may also have low blood pressure. Circulatory conditions can lead to edema by allowing blood and fluid to pool in the extremities, and low blood pressure makes it difficult for the body to effectively circulate blood to remove fluid. In pregnancy, edema often appears in the legs due to reduced blood pressure in the blood vessels in the legs caused by pressure on the blood vessels of the swollen uterus.

Edema is sometimes the first sign of an underlying medical condition. People with high blood pressure and edema may be prescribed medications to lower their blood pressure and may also take other steps to moderate their blood pressure. Compression garments can be used in the treatment of edema. People with low blood pressure and edema will need treatment for the underlying cause of low blood pressure.

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