Millions of patients affected. Billions in avoidable cost. And a detection system that's decades behind.
Every year, 4.1 million hospitalized patients in the U.S. develop hospital-acquired acute kidney injury.
That's 1 in 8 hospitalized patients — making AKI one of the most common and dangerous complications in modern healthcare.
hospitalized patients per year experience hospital-acquired AKI
hospitalized patients develops acute kidney injury
of hospital-acquired AKI is largely unreimbursed by insurance
Without continuous monitoring, kidney injury develops silently across the hospital stay — with risk compounding each day detection is delayed.
When AKI goes undetected, the consequences compound — for patients, clinicians, and health systems.
Patients deteriorate to the point of requiring intensive care — transfers that could have been prevented.
Kidney function collapses undetected, forcing emergency dialysis initiation with significant patient risk.
Patients spend days or weeks longer in the hospital, increasing risk of secondary infections and complications.
Hospitals absorb the full cost of unreimbursed AKI complications — totaling billions annually across the system.
The standard biomarker — creatinine — only rises after significant kidney damage has already occurred.
By the time creatinine is elevated, clinicians have lost the window for early, effective intervention. They're always reacting — never anticipating.
The gap between when kidney injury begins and when creatinine rises represents a critical missed window for intervention.
Detects AKI only after ~50% of kidney function is lost. By this point, the window for effective intervention has narrowed dramatically.
Identifies subtle physiological shifts that precede creatinine elevation — enabling clinical teams to intervene hours to days earlier.
Patient admitted for surgery, cardiac event, or other acute condition. Standard labs are drawn — kidney function appears normal.
Subtle physiological changes begin as nephrotoxic medications, hemodynamic shifts, or surgical stress impact kidney tissue. No alarm is triggered.
Kidney function continues to decline. Creatinine levels have not yet risen significantly. Clinical team remains unaware of developing injury.
Lab results finally show elevated creatinine. By now, significant kidney damage has occurred. Intervention options are limited.
Patient may require ICU transfer, dialysis, or extended hospitalization. Recovery is prolonged. Costs multiply. This was preventable.
Each day that AKI goes undetected, the financial burden multiplies — for the patient and the health system.
RenalSignal is building the technology to detect AKI earlier — before creatinine rises, before damage accumulates, before costs cascade.
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