<prompt> A 20 year old G1P0 female at 40 weeks of gestation presents to labor room with rupture of membranes and early onset of labor. She is extremely anxious with peripheral i.v placement and begins to Hyperventilate. If allowed to continue hyperventilation, It will causeDecreased maternal arterial pHIncreased placental perfusionIncreased fetal arterial pHDecreased maternal uterine artery flow  <response>: Hyperventilation CO2 washout Low PaCO2 levels Vasoconstriction Reduced placental perfusion 