<prompt> In a measurement of cardiac output using the Fick principle, the O concentrations of mixed venous and arterial blood are 16 and 20 ml-100 ml-1, respectively, and the O consumption is 300 ml-min-1. The cardiac output in liters-min-1 is:5897.5  <response>: Ans: d 7.5Ref: Ganong, 25th edition, Page 543The Fick principle states that the cardiac output is equal to the oxygen consumption divided by the arterial- venous oxygen concentration difference.Here, its 20 -16 ml-100 ml-1 or 200 - 160 ml liter-1.Therefore, the cardiac output is equal to 300200 - 160 or 7.5 liters-min-1 