Article appraisedRussell JA, Walley KR, Singer J, et al.; VASST Investigators. Vasopressin versus norepinephrine infusion in patients with septic shock. N Engl J Med 2008; 258: 877-87.
Structured AbstractBackground: The use of low-dose vasopressin as an adjunctive vasopressor in septic shock is common, but its effect on mortality is unknown.Objective: To determine whether a low-dose vasopressin infusion reduces mortality in septic shock when added to an infusion of norepinephrine.Design and Setting: Multicentre, multiple-blinded, randomized controlled trial conducted in three countries from July, 2001 to April, 2006.Patients: Inclusion criteria were patients C17 years of age with septic shock requiring C5 ug min -1 of norepinephrine (or equivalent) for C6 h, or requiring C15 ug min -1 of norepinephrine (or equivalent) for C3 h, despite having received C500 ml of normal saline. Study enrolment was only permitted within 24 h of meeting inclusion criteria. Exclusion criteria included previous use of vasopressin, acute myocardial infarction, New York Heart Association class III or IV congestive heart failure, acute mesenteric ischemia, severe traumatic brain injury, hyponatremia \130 mmol l -1 , Raynaud's phenomenon, systemic sclerosis, vasospastic diathesis, pregnancy, an irreversible condition with an estimated six-month mortality C50%,