<prompt> What is the approximate Total fetal cardiac output?300 mlkgmin450 mlkgmin600 mlkgmin150 mlkgmin  <response>: b. 450mlkgminRef: Nelsons 20e p 2161Total fetal cardiac output, i.e. combined output of both left and right ventricles--is 450mLkgmin.65 of descending aortic blood flow returns to the placenta and remaining 35 perfuses the fetal organs and tissues. 