For decades, the use of sodium bicarbonate in critically ill patients with severe metabolic acidosis has occupied a contested middle ground in intensive care medicine — clinicians administer it reflexively, yet robust trial evidence supporting its benefit has remained elusive. A new editorial in the New England Journal of Medicine signals that this calcified clinical debate may finally be shifting.
The editorial, published in NEJM Volume 395, addresses emerging evidence around bicarbonate therapy in critically ill adults presenting with metabolic acidosis — a condition where blood pH drops dangerously, impairing cellular enzyme function, cardiac contractility, and vasopressor responsiveness. The piece frames a reappraisal of when, in whom, and at what severity threshold bicarbonate administration may confer measurable clinical benefit, suggesting the field has reached enough cumulative trial data to meaningfully revise longstanding guidance. Specific attention appears directed at patient subgroups — particularly those with acute kidney injury — where the risk-benefit calculus may diverge from the broader acidosis population.
This editorial matters because sodium bicarbonate sits at the intersection of two enduring tensions in critical care: the instinct to correct an abnormal lab value versus the evidence that physiological normalization does not always translate to survival benefit. Prior landmark trials, including BICAR-ICU, found only marginal overall mortality benefit while identifying a meaningful signal in the AKI subgroup — a finding that has kept clinical equipoise alive. The NEJM editorial appears to synthesize this accumulating literature into a coherent narrative arc, suggesting clinical practice may need targeted refinement rather than wholesale adoption or abandonment. As an editorial rather than primary trial data, it carries the weight of expert synthesis but not causal evidence. Its publication in NEJM nonetheless reflects that the field considers this question mature enough for a directional statement — an incremental but important step toward clearer ICU protocols.