A reduced circulating blood volume. Acutely, it is caused by unreplaced losses from bleeding, sweating, diarrhoea, vomiting or diuresis. Chronically it may be caused by inadequate fluid intake.
Hypovolemia is a condition characterized by an unusually low volume of blood in the circulatory system. This typically occurs as a result of blood loss due to injury, internal bleeding, or surgery. It could also be caused by fluid loss from conditions such as diarrhea and vomiting. If left untreated, hypovolemia can progress to shock.