CRI trends with changes in intravascular volume relative to an individual patient’s response to hypovolemia, and should only be used by qualified medical providers as an adjunct to rather than as a replacement for traditional hemodynamic measures.
Click here to view Instructions for use for our products featuring CRI.
Changes in intravascular volume may occur from blood loss, dehydration or severe infections resulting in sepsis.


Zoomed in military medical evacuation.Trauma is the leading cause of death ages 1-45. 80% of preventable trauma deaths are from hemorrhage.
In the compensated shock stage, dangerous levels of blood and/or fluid loss go undetected by traditional vital signs2

Each minute of delay in administering blood increases mortality by 5%
(among patients requiring massive transfusion)

Key CRI findings for hemorrhage

CRI is a more sensitive indicator of blood loss than BP, Sp02, HR, base deficit, Hb/Hct, and shock index in trauma patients and controlled blood loss studies4-8

CRI is instantly and continuously available while lactate values are delayed by lab processing times (44 min), despite CRI and lactate having similar abilities to predict hemorrhage9


Hanging bag of IV fluids.40% of seniors are chronically dehydrated. $5.5 billion in annual preventable US hospital admissions.
Lack of a rapid, noninvasive objective measure of dehydration contributes to unnecessary hospitalizations11

Late recognition of dehydration in the elderly, and under and overtreatment of children complicate patient care and are costly to the healthcare system11

Key CRI findings for dehydration

CRI reflects individual patient response to hypovolemia from hemorrhage, passive heat stress and exercise, trending to the point of decompensation2


Blurry hospital image tending to patient.Sepsis accounts for 30% of all US hospital deaths and $38 billion annually in US hospital costs.
Existing tools for screening and diagnosis of sepsis are often inaccurate12

Sepsis diagnosis after admission increases mortality rate 2x and hospital costs 3x (compared to early diagnosis)13

Key CRI findings for sepsis

CRI distinguished septic from non-septic patients with unparalleled sensitivity and specificity among a cohort of patients with surgical infection14
CRI is a proprietary technology with 13 families of patents in hemorrhage, dehydration, and sepsis

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1. Eastridge BJ, et al. Transfusion. 2019; 59:1423-1428.
2. Moulton SL, et al. J Trauma Acute Care Surg. 2017 Jul;83(1 Suppl 1):S104-S111.
3. Meyer DE, et al. J Trauma Acute Surg. 2017;83(1):19-24.
4. Nadler R, et al. Shock. 2014 Aug;42(2):93-8.
5. Stewart CL, et al. J Trauma Acute Care Surg. 2014 Dec;77(6):892-7; 897-8.
6. Convertino VA, et al. Shock. 2015 Aug;44 Suppl 1:27-32.
7. Stewart CL, et al. J Spec Oper Med. 2016 Spring;16(1):6-13. PMID: 27045488.
8. Johnson MC, et al. Shock. 2018 Mar;49(3):295-300.
9. Johnson MC, et al. J Trauma Acute Care Surg. 2017 Oct;83(4):603-608.
10. Mentes JC, et al. SAGE Open Nursing . 2019;5:1-8.
11. S. Kim. P Annals of Epidemiology. 2007;17(9):736.
12. Duncan, C.F., Youngstein, T., Kirrane, M.D. et al. Diagnostic Challenges in Sepsis. Curr Infect Dis Rep23, 22 (2021).
13. Liang L (AHRQ), Moore B (IBM Watson Health), Soni A (AHRQ). National Inpatient Hospital Costs: The Most Expensive Conditions by Payer, 2017. HCUP Statistical Brief #261. Month 2020. Agency for Healthcare Research and Quality, Rockville, MD.
14. Benov A, et al. J Trauma Acute Care Surg. 2020 Aug;89(2S Suppl 2):S153-S160.