<prompt> Which of the following is the best parameter for monitoring septic shock?Central venous pressure CVPVasopressor requirementUrine outputSerum lactate  <response>: Definitions of sepsis, severe sepsis, and septic shock Sepsis category Sepsis-3 2001 Sepsis CMS Sep-1 Sepsis SOFA score 2 suspected infection 2 of 4 SIRS criteria suspected infection 2 of 4 SIRS criteria suspected infection Severe Sepsis Not applicable Sepsis organ dysfunction, hypoperfusion or hypotension Sepsis sepsis - induced organ dysfunction Septic Shock Vasopressor requirement to maintain MAP 65 mm Hg Serum lactate level 2 mmolL in the absence of hypovolemia Sepsis induced hypotension persisting after adequate IV fluid resuscitation presence of perfusion abnormalities or organ dysfunction Lactate 4 mmolL SBP 90 mm Hg. not responsive to IV fluids MAP 70 mm Hg not responsive to IV fluids 