The stages of a liver transplant are traditionally called the "preanhepatic", "anhepatic" and "neohepatic" or "reperfusion" phases. Traditionally, the anhepatic phase of transplantation has been managed with an artifically low CVP (0-5mmHg), and is accompanied by torrential blood loss. The "reperfusion" phase of the transplant is characterised by wild haemodynamic instability, as vasoactive products of anaerobic metabolism are flushed out of the donor liver by the first pulses of the recipient's blood. This could last all of 5 minutes, or it could last for many hours, well into their ICU stay. In this situation, one can manage things as if it were a SIRS response, using vasopressors.