Pregnant and early postpartum patients are at increased risk for several neurologic complications. These complications include ischemic stroke with or without CVST, hemorrhage with or without CVST, eclampsia, PRES and RCVS (also called postpartum angiopathy). CVST may result in venous infarction, hemorrhages and seizure. Given her focal exam, stroke onset seizure is also a possibility, though this is less common than the options listed. Eclampsia, PRES, and RCVS may be thought to lie on an overlapping spectrum with similar underlying pathophysiology. PRES typically presents with headache, visual symptoms, and seizures. Classically this is thought to result from increased vascular tone and endothelial cell dysfunction leading to hypertension, increased vascular permeability and vasogenic cerebral edema. RCVS presents with thunderclap headache, convexity subarachnoid hemorrhage, lobar hemorrhage, seizures, and focal neurologic deficits. This results from a noninflammatory reversible vasoconstriction of cerebral vessels. Eclampsia is a prothrombotic state and may predispose to strokes, but also leads to changes in vascular physiology.
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