相关实验视频
Updated: Jun 19, 2026

07:24
Pseudomonas aeruginosa Induced Lung Injury Model
Published on: October 29, 2014
高海拔肺的致病性:炎症不是一个病因因素
Erik R Swenson1, Marco Maggiorini, Stephen Mongovin
1Pulmonary and Critical Care Section, S-111-Pulm, Veterans Affairs Puget Sound Health Care System, 1660 S Columbian Way, Seattle, WA 98108, USA. eswenson@u.washington.edu
JAMA
|May 1, 2002
概括
高海拔肺 (HAPE) 是由肺动脉压力增加引起的,导致富含蛋白质的出血性. 早期HAPE显示正常的炎症标志物,表明它是水静性,不是主要的炎症.
科学领域:
- 身体生理学 身体生理学
- 高度医学 高度医学
- 肺部医学 肺部医学
背景情况:
- 高海拔肺水腫 (HAPE) 的病原性仍在辯論中,其中包括由于肺血管收縮和高毛細血管壓力而引起的膜毛細血管屏障透性變化的理論.
- 在HAPE中之前的支气管支气管洗 (BAL) 发现表明可能的炎症病因特征.
研究的目的:
- 调查炎症是否是HAPE的主要事件.
- 建立HAPE发展事件的时间序列.
主要方法:
- 一个案例研究涉及10名HAPE易感和6名HAPE耐药的受试者,所有非专业的登山者都具有先前的高海拔经验.
- 肺动脉压力测量和BAL液体分析在低海拔 (490米) 和高海拔 (4559米) 之前或在HAPE开始时进行.
主要成果:
- 与耐药者相比,HAPE敏感的受试者在高海拔地区表现出明显更高的肺动脉缩压 (66 mm Hg vs 37 mm Hg).
- 在敏感组和耐药组之间,或在低高度和高高度之间,没有观察到BAL液体总白细胞计数的差异.
- HAPE病例中的BAL液体显示了高度的血蛋白和红细胞,但炎症标志物如细胞因子或eicosanoids没有增加.
结论:
- 早期HAPE的特征是肺动脉压力升高,导致液静性肺.
- edem 是富含蛋白质和轻度出血的,具有正常的白细胞,细胞因子和eicosanoid水平.
- HAPE主要是一种液态肺的形式,其次是膜-毛囊透性的二次变化.
相关概念视频
Asthma: Pathogenesis and Management
Asthma is a chronic pulmonary condition involving inflammation of the airways, hyper-reactivity, and reversible obstruction of the airways. This condition can significantly impact a person's quality of life, making breathing difficult and leading to distressing symptoms.
Asthma is classified as allergic and non-allergic. Allergens such as dust mites, pollen, and pet dander trigger allergic asthma, while factors like cold air, intense emotions, or exercise can induce non-allergic asthma.
Asthma is classified as allergic and non-allergic. Allergens such as dust mites, pollen, and pet dander trigger allergic asthma, while factors like cold air, intense emotions, or exercise can induce non-allergic asthma.
Pneumonia I: Introduction
Pneumonia is an acute respiratory infection that targets the lungs, specifically the alveoli. These tiny air sacs, essential for oxygen exchange, become engorged with pus and fluid, severely hindering breathing, decreasing oxygen absorption, and causing significant pain and discomfort during respiration.
Risk Factors
Various factors influence the likelihood of developing pneumonia. Age plays a crucial role, with infants, children under two, and individuals over 65 at increased risk due to their...
Risk Factors
Various factors influence the likelihood of developing pneumonia. Age plays a crucial role, with infants, children under two, and individuals over 65 at increased risk due to their...
Pneumonia II: Pathophysiology
The pathophysiology of pneumonia involves the following steps:
Inhalation Anthrax
Anthrax is a zoonotic disease caused by Bacillus anthracis, a Gram-positive, spore-forming bacterium. It primarily affects herbivorous animals but can be transmitted to humans through skin contact, ingestion, or inhalation of spores.Cutaneous anthrax, the most common form, typically results from direct contact with bacterial spores through skin abrasions and is generally less severe. Gastrointestinal anthrax results from eating undercooked or contaminated meat. It affects the mouth, throat, or...
Pulmonary Edema II: Pathophysiology
Pulmonary edema is the accumulation of fluid in the interstitial and alveolar spaces of the lungs, impairing gas exchange and oxygen delivery. It may be cardiogenic or noncardiogenic, but both reduce oxygenation and lung compliance.Cardiogenic Pulmonary EdemaCardiogenic edema results from increased hydrostatic pressure in pulmonary capillaries, usually due to left ventricular dysfunction from myocardial infarction, heart failure, or valvular disease. Ineffective cardiac pumping causes blood to...
Pneumonia I: Introduction
Pneumonia is an infection of the lower respiratory tract that leads to inflammation of the lung parenchyma, often resulting in the accumulation of inflammatory exudate in the alveoli and airways. Unlike the watery, low-protein fluid exudate in pulmonary edema, the exudate in this case is a thick fluid rich in immune cells, proteins, and debris produced during infection and inflammation.This impairs gas exchange and can lead to consolidation of lung tissue. The infection may be caused by a...

