EclampsiaPlacentaBlood CoagulationOxygenMagnesium SulfateDisseminated Intravascular CoagulationPre-EclampsiaPregnancyMaternal MortalityBlood Coagulation TestsBlood Coagulation DisordersHELLP SyndromeBlood Coagulation FactorsPlacenta DiseasesOxygen ConsumptionPlacenta PreviaPuerperal DisordersPlacenta AccretaHypertension, Pregnancy-InducedReactive Oxygen SpeciesPlacenta, RetainedPregnancy Complications, CardiovascularThromboplastinAbruptio PlacentaeTrophoblastsPregnancy OutcomePosterior Leukoencephalopathy SyndromeFibrinolysisProthrombin TimePartial Thromboplastin TimeFactor VIIObstetric Labor ComplicationsPregnancy ComplicationsTocolytic AgentsGestational Age