马斯尔德诱导的高氨血与非典型的,受限制的扩散模式表明混合的代谢和低氧-无氧损伤
Renu Thomas1, Nhuchau Tiffany Nguyen1, Daniel Bao1
1HCA Houston Healthcare Kingwood, Kingwood, Texas.
HCA healthcare journal of medicine
|January 14, 2026
概括
肝硬化时氨水平高可能导致精神状态变化和脑成像异常,模仿缺氧损伤. 用药及时治疗可以使氨正常化,并解决这些神经学和放射学发现.
科学领域:
- 神经学 神经学
- 胃肠病学 胃肠病学
- 放射学 放射学是一门学科.
背景情况:
- 肝脑病变 (HE) 是不补偿性肝硬化的一个常见并发症,导致精神状态的改变.
- 未经治疗的HE会导致严重的神经系统后果,包括脑和.
- 在HE中,高氨血症可能会导致模仿缺氧-厌氧脑损伤的扩散模式,即使有正常的氧化.
研究的目的:
- 介绍一个患有肝硬化的病人的病例,经历了精神状态的改变和不寻常的大脑成像发现.
- 为了研究严重的肺高血压和肝硬化中神经/放射学异常之间的关系.
- 突出神经成像在诊断和管理HE并发症中的作用.
主要方法:
- 一个61岁的妇女患有肝硬化和精神状态改变的病例报告.
- 进入重症监护室 (ICU) 用输管治疗HE和贫血.
- 进行了实验室测试 (氨水平) 和神经成像 (CT,MRI).
主要成果:
- 患者呈现出改变的精神状态和高氨水平 (450μmol/L).
- 最初的大脑MRI显示受限扩散与缺氧-无氧损伤一致,这与稳定的生命体征不一致.
- 积极的肠道治疗导致了快速的氨正常化和临床改善,重复的MRI显示异常的解决.
结论:
- 这一案例说明了与肝硬化中严重的肺高血压相关的罕见神经和放射性后果.
- 氨水平的快速正常化表明,最初的水平可能暂时升高.
- 神经成像对于评估有意识改变的肝硬化患者至关重要,特别是当代谢纠正不足时.
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