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Cardiac Output vs Cardiac Index

Cardiac Output

• Quantity of blood pumped by heart into the systemic circulation in unit time.

• Normal value: 5 L/min

Cardiac Index

• In different people, the cardiac output is different depending on their body size. So cardiac output is usually normalized to body surface area. The parameter thus we get is the cardiac index.

• Cardiac index = Cardiac output / body surface area

= 5 L/min

1.7 m2

= 3 L/min/m2

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▶️ Distribution of Cardiac Output