Moyamoya disease in pregnancy and delivery planning: A case series and literature review.

Moyamoya disease is a rare condition characterized by stenosis or occlusion of the intracranial internal carotid arteries leading to the development of fragile collateral vessels. Disruption of these vessels can lead to both ischemic and hemorrhagic strokes. As such, these patients are sensitive to changes in intracranial pressure and pose a challenge in pregnancy and delivery planning. Two cases of a parturients with moyamoya disease are presented, and the literature regarding safe method of delivery in similar patients is reviewed. The available evidence suggests that adequate anesthesia, and maintenance of hemodynamic status, takes precedence over the exact method of delivery in these patients. Cesarean delivery under epidural anesthesia can be a safe option for parturients with moyamoya disease, but an uncomplicated vaginal delivery, most often assisted with either vacuum or forceps, has also been frequently reported.