Balanced crystalloids versus saline in critically ill adults with low plasma bicarbonate: A secondary analysis of a clinical trial

Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, United States. Electronic address: john.h.brems@vumc.org. Department of Medicine, Division of Allergy, Pulmonary, and Critical Care Medicine, Vanderbilt University Medical Center, Nashville, TN, United States. Department of Biostatistics, Vanderbilt University Medical Center, Nashville, TN, United States. Department of Emergency Medicine, Vanderbilt University Medical Center, Nashville, TN, United States.

Journal of critical care. 2021
Abstract
PURPOSE We aimed to determine if balanced crystalloids compared with saline improve outcomes in critically ill adults admitted with low plasma bicarbonate. MATERIALS AND METHODS We performed a secondary analysis of the Isotonic Solutions and Major Adverse Renal Events Trial (SMART). We included patients who presented to the Emergency Department with a first measured plasma bicarbonate less than 20 mmol/L. Among these patients, we compared the effect of balanced crystalloid versus saline on the primary outcome of major adverse kidney events within 30 days (MAKE30), defined as a composite of death, new renal-replacement therapy, or persistent renal dysfunction (final inpatient creatinine ≥200% baseline). Secondary outcomes included 30 day in-hospital mortality, receipt of new RRT, persistent renal dysfunction, incident AKI, and vasopressor-free days. RESULTS Among the 2029 patients with an initial plasma bicarbonate concentration < 20 mmol/L, there was no difference in the incidence of MAKE30 between those assigned to balanced crystalloid versus saline (21.8% vs 21.3%; P = 0.93). Secondary outcomes were similar between the balanced crystalloid and saline groups. CONCLUSIONS Among critically ill adults presenting to the Emergency Department, initial plasma bicarbonate concentration does not appear to be a useful marker to guide the selection of balanced crystalloid versus saline.
Study details
Language : eng
Credits : Bibliographic data from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine