To determine the systemic haemodynamic and organ blood flow responses to the administration of sevoflurane during spontaneous ventilation, heart rate, cardiac index, mean arterial pressure, arterial blood gases, and blood flows to the brain
(Obstet Gynecol. 2018;132:1180–1184)
A type I Chiari malformation, which is the most common type of Chiari malformation (0.6% prevalence), is defined as descent of the cerebellar tonsils below the foramen magnum by >5 mm. While most patients with this congenital malformation are asymptomatic, 30% can experience symptoms, ranging from headaches exacerbated by cough to more severe effects, such as confusion, deconjugate gaze, and papilledema as a result of increased intracranial pressure. Subsequently, there are concerns that pregnant women with Chiari I malformations may experience tonsillar herniation and neurological deterioration during vaginal delivery. In this case series, the authors assessed whether vaginal delivery or neuraxial anesthesia increased the risk of neurological deterioration in women with uncorrected Chiari I malformation.
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