Normal cardiac index in an adult is:-: (A) 5.9 L/min/M2, (B) 2.3 L/min/M2, (C) 3.2 L/min/M2, (D) 4.6 L/min/M2
Answer is C. Cardiac index: - Experiments have shown that the cardiac output increase approximately in propoion to the surface area of the body. Therefore - cardiac output is frequently stated in terms of the cardiac index, which is cardiac output per square meter of body surface area. - The avg. Human being who weight 70 kg has a BSA of about 1.7 sq. meter. Which means that the normal average cardiac index for adults is about 3 L / min / M2 of BSA.