What are normal cardiac output levels?

5 liters/min: A typical cardiac output is approximately 5 l per minute. This can vary with the size of the patient with a larger patient having larger cardiac output. When the cardiac output is normalized for the size of the patient, this is called the cardiac index. A typical cardiac index would be 2.5. A number of medical conditions, such as fever or anemia, can increase the cardiac output.

Varies: It varies by the body surface area of the individual and is therefore not a useful measurement. 5 liters/minutes is ballpark. A more useful measurement is cardiac index which is cardiac output divided by bsa in m². Normal is >2 l/min/m².