Respiratory Trials·org

Sepsis & septic shock · Choice of vasopressor

VASST randomised trial

Vasopressin versus norepinephrine infusion in patients with septic shock

VASST trial design and results
Design Multicentre, double-blind randomised controlled trial
Treatment Low-dose vasopressin added to open-label vasopressors
Control Noradrenaline added to open-label vasopressors
Population 778 patients with septic shock already receiving catecholamine vasopressors
Follow-up 90 days
Primary endpoint 28-day all-cause mortality
Result 396 patients received vasopressin and 382 noradrenaline. There was no significant difference in mortality between the groups.
Secondary endpoints 90-day mortality, organ dysfunction, serious adverse events

Low-dose vasopressin did not reduce mortality rates as compared with norepinephrine among patients with septic shock who were treated with catecholamine vasopressors.

The trial authors, in the published abstract

How it has aged

Vasopressin remains widely used as a catecholamine-sparing agent, which is a defensible aim this trial neither supports nor refutes — it tested mortality, and found none. The same distinction applies to ATHOS-3 and angiotensin II.

Publications

Vasopressin versus norepinephrine infusion in patients with septic shock

Russell JA, Walley KR, Singer J, et al. Vasopressin versus norepinephrine infusion in patients with septic shock. N Engl J Med 2008 Feb 28;358(9):877-87.

  • No mortality difference versus noradrenaline
  • Vasopressin used as an addition to existing catecholamines