Malloy Kelly A, Chigbu Degaulle I
Pennsylvania College of Optometry, at Salus University, Elkins Park, Pennsylvania.
Optometry. 2010 Feb;81(2):61-70. doi: 10.1016/j.optm.2009.10.011.
An abduction deficit or cranial nerve VI palsy can have many potential etiologies. However, a cranial nerve VI palsy in the setting of disc edema suggests increased intracranial pressure, requiring emergent work-up.
An 18-year-old woman presented with significant headaches and horizontal diplopia, which she claimed began after giving birth 3 months prior. Her examination found a right cranial nerve VI palsy and mild disc edema of the left eye. This combination of findings was suggestive of increased intracranial pressure. Emergent workup uncovered a large chronic subdural hematoma requiring immediate neurosurgical intervention. She ultimately admitted to being abused by her partner.
Diplopia and disc edema in a young, nonoverweight patient with an altered mental state is very concerning. Meningitis and complications of spinal anesthesia, although rare, need to be considered in patients who have recently given birth. However, other causes of increased intracranial pressure, including subdural hemorrhage secondary to trauma, also have to be considered, even if the patient denies any history of trauma. Abused patients often deny trauma.
外展功能缺失或第六脑神经麻痹可能有多种潜在病因。然而,在视盘水肿情况下出现的第六脑神经麻痹提示颅内压升高,需要紧急检查。
一名18岁女性因严重头痛和水平性复视而就诊,她称这些症状在3个月前分娩后开始出现。检查发现其右侧第六脑神经麻痹,左眼有轻度视盘水肿。这些检查结果提示颅内压升高。紧急检查发现一个巨大的慢性硬膜下血肿,需要立即进行神经外科干预。她最终承认遭受了伴侣的虐待。
在精神状态改变的年轻非超重患者中出现复视和视盘水肿非常令人担忧。脑膜炎和脊髓麻醉并发症虽然罕见,但在近期分娩的患者中需要考虑。然而,其他导致颅内压升高的原因,包括外伤继发的硬膜下出血,即使患者否认有任何外伤史也必须考虑。受虐患者常常否认外伤。