Dr. Shankar-Hari told Reuters Health by email, “The proposed definition for septic shock is a paradigm shift in illness concept. We wanted to provide consistency in diagnosing septic shock. The epidemiology of this illness as we measure currently is messy.”

After examining six possible sets of clinical criteria, the group identified two criteria that proved most consistent with the proposed septic shock definition: hypotension requiring use of vasopressors to maintain mean blood pressure of 65 mm Hg or greater and having a serum lactate level greater than 2 mmol/L persisting after adequate fluid resuscitation.

In their summary report, Dr. Clifford S. Deutschman, from Hofstra-Northwell School of Medicine, Feinstein Institute for Medical Research, New Hyde Park, New York, and colleagues on the Task Force write, “The proposed criteria should aid diagnostic categorization once initial assessment and immediate management are completed. qSOFA or SOFA may at some point be used as entry criteria for clinical trials.”

“Greater clarity and consistency will also facilitate research and more accurate coding,” they add.

Dr. Edward Abraham, from Wake Forest School of Medicine, Winston Salem, North Carolina, who wrote an editorial related to these reports, told Reuters Health by email, “While the new definitions advance the field, particularly from an epidemiologic viewpoint and potentially in helping to identify the economic impact associated with sepsis and septic shock, they are only of limited help in defining care for an individual patient or in designing clinical trials to examine new therapies for sepsis.”

“As noted in the editorial, more discriminatory definitions, based on specific cellular and genomic alterations, are necessary to truly affect care for individual patients and to assist in the development of novel therapeutic approaches to sepsis and septic shock,” he said.

A number of organizations supported this research and a number of coauthors reported disclosures.