Does hemorrhage with a large loss of blood cause rise in BP due to change cardiac output?

Hemorrhage with a large loss of blood typically leads to a decrease in blood pressure, rather than an increase. The cardiac output (the amount of blood the heart pumps out with each contraction) and total circulating blood volume decrease, leading to reduced tissue perfusion. As a result, blood pressure may drop significantly, and the body enters into a state of hypovolemic shock.