Normal cardiac index in an adult is
Cardiac index: - Cardiac output per square meter of body surface area. i.e. Cardiac index = Cardiac output/Body surface area Experiments have shown that the cardiac output increases approximately in propoion to the surface area of body. The average human being who weighs 70 kilograms has a body surface area of about 1.7square meters, which means that the normal average cardiac index for adults is about 3 L / min/ M2 of body surface area.
5.9 L/min/m2
2.3 L/min/m2
3.2 L/min/m2
4.6 L/min/m2
Cardiac Output