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相关概念视频

Equilibrium and Balance01:15

Equilibrium and Balance

The inner ear assumes dual functionalities of auditory perception and equilibrium maintenance. The vestibule is the organ responsible for balance. This organ contains mechanoreceptors, specifically hair cells, endowed with stereocilia, which aid in deciphering information regarding the position and motion of our heads. Two intrinsic components, the utricle and saccule, help perceive head position, while the semicircular canals track head movement. Neurological messages initiated in the...
Increased Intracranial Pressure l: Introduction01:14

Increased Intracranial Pressure l: Introduction

Intracranial hypertension is a sustained elevation of intracranial pressure (ICP) above 22 mm Hg. In supine adults, normal ICP is ~7–15 mm Hg.The rigid, nonexpandable cranium contains three components—brain tissue, blood, and cerebrospinal fluid (CSF)—that total ~1,700 mL in a typical adult: 1,400 mL brain (~80%), 150 mL blood (~10%), and 150 mL CSF (~10%). According to the Monro–Kellie doctrine, total intracranial volume is effectively fixed. When one component expands, CSF and venous blood...
Increased Intracranial Pressure ll: Pathophysiology01:29

Increased Intracranial Pressure ll: Pathophysiology

Increased intracranial pressure (ICP) refers to a potentially life-threatening rise in pressure inside the skull. This usually happens when there is a major change in the volume of brain tissue, blood, or cerebrospinal fluid (CSF) — the three components inside the skull. According to the Monro-Kellie doctrine, if the volume of one component increases, the volumes of the other components must decrease to maintain normal pressure. If this does not happen, ICP rises.The process often begins with...
Cerebral Edema l: Introduction01:19

Cerebral Edema l: Introduction

Cerebral edema is a pathological increase in brain water content that disrupts intracranial pressure regulation and impairs neurological function. Because the cranial vault is rigid, even modest increases in tissue volume can compromise cerebral perfusion, distort neural structures, and initiate secondary injury. Cerebral edema develops through four principal mechanisms: vasogenic, cytotoxic, interstitial, and ionic.Vasogenic EdemaVasogenic edema arises from disruption of the blood–brain...
Cerebral Edema ll: Pathophysiology01:22

Cerebral Edema ll: Pathophysiology

Vasogenic edema is a major form of cerebral edema characterized by abnormal accumulation of fluid in the brain’s extracellular space due to disruption of the blood–brain barrier (BBB). The BBB is a specialized structure composed of endothelial cells connected by tight junctions, supported by astrocytic endfeet and a basement membrane. Under normal conditions, it tightly regulates the movement of ions, proteins, and solutes between the bloodstream and brain parenchyma. When this barrier loses...
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相关实验视频

Updated: Jul 7, 2026

Surgical Induction of Endolymphatic Hydrops by Obliteration of the Endolymphatic Duct
11:49

Surgical Induction of Endolymphatic Hydrops by Obliteration of the Endolymphatic Duct

Published on: January 22, 2010

大气压的下降可能会增加内淋巴体空间的体积在梅尼尔氏病.

Masaharu Sakagami1, Tadashi Kitahara2, Tadao Okayasu2

  • 1Department of Otolaryngology- Head and Neck Surgery, Nara Medical University, 840 Shijo-cho, Kashihara, Nara, 634-8522, Japan. m.sakagami@naramed-u.ac.jp.

Scientific reports
|March 29, 2025
PubMed
概括

大气压的变化可能会使Meniere恶化.

关键词:
大气压力 大气压力是大气压力.内淋巴体内水 (Endolymphatic hydrops) 是一种内淋巴体内水.在加多利尼姆 (Gadolinium) 中.内耳MRI是指内耳的MRI.梅尼尔氏病是梅尼尔氏病的一种疾病.天气 天气 天气 天气 天气

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Endolymphatic Duct Blockage as a Surgical Treatment Option for Ménière's Disease
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Endolymphatic Duct Blockage as a Surgical Treatment Option for Ménière's Disease

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04:34

Surgical Treatment of an Endolymphatic Sac Tumor

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相关实验视频

Last Updated: Jul 7, 2026

Surgical Induction of Endolymphatic Hydrops by Obliteration of the Endolymphatic Duct
11:49

Surgical Induction of Endolymphatic Hydrops by Obliteration of the Endolymphatic Duct

Published on: January 22, 2010

Endolymphatic Duct Blockage as a Surgical Treatment Option for Ménière's Disease
04:11

Endolymphatic Duct Blockage as a Surgical Treatment Option for Ménière's Disease

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Surgical Treatment of an Endolymphatic Sac Tumor
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科学领域:

  • 耳鼻喉科 耳鼻喉科 耳鼻喉科
  • 神经学 神经学
  • 环境医学 环境医学

背景情况:

  • 梅尼尔氏病 (MD) 的特点是头症状,可能与内淋巴体水 (EH) 相关.
  • 对于EH与气象变化之间的联系仍然不清楚.
  • 内淋巴体空间 (ELS) 的体积可以用加多增强的3特斯拉MRI量化.

研究的目的:

  • 调查24小时大气压变化与单侧Meniere病 (uMD) 患者内淋巴体空间 (ELS) 体积之间的相关性.
  • 为了比较MWD患者与患有慢性鼻炎的对照组之间的这些相关性.
  • 为了确定大气压的波动是否影响梅尼尔氏病的ELS体积.

主要方法:

  • 使用加多增强的3特斯拉MRI进行ELS体积的三维分析.
  • 在MRI扫描之前的24小时内,从日本气象局 (JMA) 收集了大气压数据.
  • 大气压变化与UMD患者和对照组的ELS率相关联.

主要成果:

  • 在对照组或 uMD 患者的健康人群中,大气压变化与 ELS 率之间没有明显的相关性.
  • 在中度听力损伤 (40-70 dB听力水平) 的MUD患者中,在受影响侧的大气压变化和前庭ELS率之间发现了显著的负相关性.

结论:

  • 阴性大气压变化可能会影响中度听力损失的Meniere病患者的前庭内淋巴体空间 (ELS) 体积.
  • 这一发现表明在Meniere病中症状恶化的潜在环境触发因素.
  • 需要进一步的研究,以充分阐明天气模式和梅尼尔氏病病理生理学之间的关系.