A、21-yEAr-olD primigrAviDA hAs An EmErgEnCy CEsArEAn DElivEry unDEr gEnErAl AnEsthEsiA BECAusE oF unAntiCipAtED FEtAl DistrEss. onE postopErAtivE intErvEntion is to Assist hEr to turn EvEry 2 hours. whiCh oF thE Following ConDitions is this intErvEntion intEnDED to prEvEnt
A、prEssurE ulCErs.
B、musCulAr stiFFnEss.
C、rEspirAtory CompliCAtions.
D、vEnous stAsis.