Tissue Perfusion and Prognosis in the Critically Ill—Is Renin the New Lactate?*Khanna, Ashish K., MD, FCCP, FCCMCritical Care Medicine: February 2019 - Volume 47 - Issue 2 - p 288–290 doi: 10.1097/CCM.0000000000003582 Editorials Buy Author InformationAuthors Article MetricsMetrics Center for Critical Care, Department of General Anesthesiology and Outcomes Research, Anesthesiology Institute, Cleveland Clinic, Cleveland, OH *See also p. 152. Dr. Khanna conceived and wrote this invited editorial in its entirety. Dr. Khanna received funding from La Jolla Pharmaceuticals. Copyright © by 2019 by the Society of Critical Care Medicine and Wolters Kluwer Health, Inc. All Rights Reserved.