Which liquid leaks out of capillaries

Of the fluid that leaves the capillary , about 90 percent is returned. The 10 percent that does not return becomes part of the interstitial fluid that surrounds the tissue cells. Small protein molecules may "leak" through the capillary wall and increase the osmotic pressure of the interstitial fluid. This further inhibits the return of fluid into the capillaries , and fluid tends to accumulate in the tissue spaces. If this continues, blood volume and blood pressure decrease significantly and the volume of tissue fluid increases, which results in edema swelling.

Attacks may be triggered by an upper respiratory infection or intense physical exertion. The frequency of attacks can range from several a year to a single instance in a lifetime.

Attacks of systemic capillary leak syndrome are often preceded by one to two days of one or more nonspecific symptoms that may include:. As the fluid leaks out from the bloodstream, blood volume and blood pressure drop. This can starve tissues in the kidneys, brain and liver of the oxygen and nutrients they need for normal function. Systemic capillary leak syndrome care at Mayo Clinic. Mayo Clinic does not endorse companies or products.

Advertising revenue supports our not-for-profit mission. This content does not have an English version. This content does not have an Arabic version. Where do I go for help? The Lymphatic System. Risk Factors and Triggers. Life with Lymphoedema. Skin Changes and Care. Exercise and Lymphoedema. Massage for Lymphoedema. Compression Garments and Bandages.

Medical Taping. Breast Oedema.