Balanced Multielectrolyte Solution vs. Saline: Comparative Analysis in Clinical Practice

No favorable differences were observed between the use of balanced multielectrolyte solution and saline solution in clinical practice, underscoring the importance of evidence-based fluid management strategies to optimize patient outcomes.

November 2022

Balanced Multielectrolyte Solution vs. Saline: Com

Background

It is not known whether using balanced multielectrolyte solution (BMES) instead of 0.9% sodium chloride solution (saline) in critically ill patients reduces the risk of acute kidney injury or death.

Methods

In a double-blind, randomized controlled trial, we assigned critically ill patients to receive BMES (Plasma-Lyte 148) or saline as fluid therapy in the intensive care unit (ICU) for 90 days.

The primary outcome was death from any cause within 90 days of randomization. Secondary outcomes were receipt of new renal replacement therapy and maximum increase in creatinine level during the ICU stay.

Results

A total of 5037 patients were recruited from 53 ICUs in Australia and New Zealand: 2515 patients were allocated to the BMES group and 2522 to the saline group.

Death within 90 days of randomization occurred in 530 of 2433 patients (21.8%) in the BMES group and 530 of 2413 patients (22.0%) in the saline group, with a difference of −0.15 percentage points (95% confidence interval [CI], -3.60 to 3.30; P = 0.90).

New renal replacement therapy was started in 306 of 2403 patients (12.7%) in the BMES group and in 310 of 2394 patients (12.9%) in the saline group, with a difference of −0.20. percentage points (95% CI, −2.96 to 2.56).

The mean (±SD) maximum increase in serum creatinine level was 0.41±1.06 mg per deciliter (36.6±94.0 μmol per liter) in the BMES group and 0.41±1, 02 mg per deciliter (36.1±90.0 μmol per liter) in the saline group, for a difference of 0.01 mg per deciliter (95% CI, -0.05 to 0.06) (0 .5 μmol per liter [95% CI, -4.7 to 5.7]).

The number of adverse events and serious adverse events did not differ significantly between the groups.

Conclusions

We found no evidence that the risk of death or acute kidney injury among critically ill adults in the ICU was lower with the use of BMES than with saline.

(Funded by the National Health and Medical Research Council of Australia and the Health Research Council of New Zealand; PLUS ClinicalTrials.gov number, NCT02721654. opens in new tab.)