AEGIS · Project 14 · CRAS
AEGIS-P14-CRAS-001
human-in-command
AEGIS-P14-CRAS-001
human-in-command
CRAS — Cardiac Risk & Functional-Reserve
Two dimensionless cardiac indices in Prof Ghista's tradition · screening risk (CRI) + functional-reserve NDI (CFRI) · grounded in the Nondimensional Physiological Index
Patient list — CFRI escalation
Cardiac Advisor — Prof Ghista presents the patient's heart
CFRI · functional NDI
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CRI · screening
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Angiographic severity
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WellAt-riskHigh-riskEstablished
Π₁ chronotropic reserve — · Π₂ ischaemic ST-strain — · Π₃ anginal threshold —
Guidance — —Route: —
What the CRAS bands mean — a cardiac-disease scaleWell full functional reserve · At-risk emerging risk · High-risk declining reserve · Established established coronary disease. This grades cardiac disease severity (from the CFRI/CRI). It is not the same scale as MDAS — there, Ω grades whole-body survival prognosis (Well → Managed → Deteriorating → Beyond reach = terminal/palliative). “Established” means the heart disease is confirmed but often treatable; “Beyond reach” means beyond saving — deliberately different terms for deliberately different things.
Professor Ghista presides as the advisor; the heart is the selected patient's, paced and coloured by his CFRI. The index advises — a clinician decides. Illustrative cohort, not for clinical use.
The system flags the at-risk heart. A cardiologist makes every call. CRAS surfaces the CRI, the CFRI functional-reserve NDI and its confidence, and hands the judgement to a human — augmenting the clinician, never replacing them.