Cardiac Index Calculator
Health & FitnessCalculate cardiac index, cardiac output adjusted for body surface area.
Cardiac Index
Cardiac index. Educational reference only, not a substitute for clinical judgment.
Interpretation
Within normal range
General interpretation against the typical 2.5-4.0 L/min/m2 range.
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Odeh Ahwal0people find this calculator helpful
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Odeh Ahwal0people find this calculator helpful
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Saved
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Frequently Asked Questions
Why use cardiac index instead of cardiac output alone?
Cardiac output varies naturally with body size, so cardiac index, which divides cardiac output by body surface area, allows for more meaningful comparison between patients of different sizes.
What is a normal cardiac index?
A normal cardiac index for a healthy adult is generally 2.5 to 4.0 L/min/m2. Values below 2.0 L/min/m2 are associated with cardiogenic shock.
How is cardiac output typically obtained for this calculation?
Cardiac output can be measured directly via methods like thermodilution or the Fick equation, or estimated from stroke volume multiplied by heart rate.
Is this calculator a substitute for medical advice?
No. This is an educational reference implementation of the standard cardiac index formula, not a substitute for a physicians clinical assessment.
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