<prompt> How much loss of circulating body fluid is within normal compensatory mechanism of body15 loss20 loss30 loss40 loss  <response>: Further loss of circulating volume overloads the bodys compensatory mechanisms and there is progressive renal, respiratory and cardiovascular decompensation. In general, loss of around 15 of the circulating blood volume is within normal compensatory mechanisms. Blood pressure is usually well maintained and only falls after 3040 of the circulating volume has been lost. 