💓 Cardiac Index (CI)
UseWhen to use: shock / heart-failure hemodynamics with known CO and BSA.
StrataCommon resting adult band ≈2.5–4.0 L/min/m² (source-dependent).
LimitsWhen not to use: uncertain CO method. · Pitfall: BSA formula mismatch. · Integrate lactate/ScvO₂.
SourceStandard cardiac index definition
This-shift next steps
After scoring: open the scene pack, peer scores, and the matching pathway. Local reference — no HIS write.
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Methodology · worked example, guidelines & full notes
CO÷BSA.
When to use
When to use: shock / heart-failure hemodynamics with known CO and BSA.
How it works
CI = CO / BSA.
Key points
- CO÷BSA.
- Size-normalized flow.
- Next: shock phenotype.
References
- Standard cardiac index definition
Worked calculation
The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.
| Cardiac output | 5.0 L/min |
|---|---|
| BSA | 1.90 m² |
→CI2.63L/min/m²
- Cue：2.5–4.5 — common resting adult CI band
Verification & sources · governance
FAQ
Frequently asked questions
- Does Cardiac Index (CI) upload patient data? Where is it calculated?
- Calculation runs locally in the browser; inputs and results are not uploaded. For licensed clinicians only; interpret with history, investigations and local protocols — not a diagnosis or prescription.
- How is Cardiac Index (CI) calculated in practice? Can you show a worked example?
- Inputs: Cardiac output 5.0 L/min, BSA 1.90 m² → Result: CI 2.63 L/min/m²（Cue: 2.5–4.5 — common resting adult CI band）