Definition of Hypovolemic shock:

Hypovolemic shock is an emergency condition in which severe blood and fluid loss makes the heart unable to pump enough blood to the body. This type of shock can cause many organs to stop working.

Causes, incidence, and risk factors:

Losing about 1/5 or more of the normal amount of blood in your body causes hypovolemic shock.

Blood loss can be due to bleeding from cuts or other injury or internal bleeding such as gastrointestinal tract bleeding. The amount of blood in your body may drop when you lose too many other body fluids, which can happen with diarrhea, vomiting, burns, and other conditions.

The greater and more rapid the blood loss, the more severe the shock symptoms.