scholarly journals Mechanisms of neurogenic pulmonary edema development

2008 ◽  
pp. 499-506
Author(s):  
J Šedý ◽  
J Zicha ◽  
J Kuneš ◽  
P Jendelová ◽  
E Syková

Neurogenic pulmonary edema is a life-threatening complication, known for almost 100 years, but its etiopathogenesis is still not completely understood. This review summarizes current knowledge about the etiology and pathophysiology of neurogenic pulmonary edema. The roles of systemic sympathetic discharge, central nervous system trigger zones, intracranial pressure, inflammation and anesthesia in the etiopathogenesis of neurogenic pulmonary edema are considered in detail. The management of the patient and experimental models of neurogenic pulmonary edema are also discussed.


1989 ◽  
Vol 67 (3) ◽  
pp. 1185-1191 ◽  
Author(s):  
M. D. McClellan ◽  
I. M. Dauber ◽  
J. V. Weil

The syndrome of neurogenic pulmonary edema raises the question of whether there are neurological influences on pulmonary vascular permeability. Previous experimental models commonly produced severe hemodynamic alterations, complicating the distinction of increased permeability from increased hydrostatic forces in the formation of the pulmonary edema. Accordingly, we employed a milder central nervous system insult and measured the pulmonary vascular protein extravasation rate, which is a sensitive and specific indicator of altered protein permeability. After elevating intracranial pressure via cisternal saline infusion in anesthetized dogs, we used a dual isotope method to measure the protein leak index. This elevated intracranial pressure resulted in a nearly three-fold rise in the protein leak index (54.1 +/- 7.5 vs. 20.2 +/- 0.9). This central nervous system insult was associated with only mild increases in pulmonary arterial pressures and cardiac output. However, when we reproduced these hemodynamic changes with left atrial balloon inflation or isoproterenol infusion, we observed no effect on the protein leak index compared with control. Although the pulmonary arterial wedge pressure with intracranial pressure remained <10 mmHg, increases in the extravascular lung water were demonstrated. The results suggest the existence of neurological influences on pulmonary vascular protein permeability. We conclude that neurological insults result in increase pulmonary vascular permeability to protein and subsequent edema formation, which could not be accounted for by hemodynamic changes alone.



2001 ◽  
Vol 29 (6) ◽  
pp. 1222-1228 ◽  
Author(s):  
Ossama Hamdy ◽  
Hiroshi Maekawa ◽  
Yasuhiro Shimada ◽  
Guo Gang Feng ◽  
Naohisa Ishikawa


2018 ◽  
Vol 21 (1) ◽  
pp. 49-52
Author(s):  
Carlos Eduardo Romeu De Almeida ◽  
Eberval Gadelha Figueiredo ◽  
Bernardo Assumpção De Monaco ◽  
Arthur Maynart Pereira Oliveira ◽  
Manoel Jacobsen Teixeira

Neurogenic Pulmonary Edema (NPE) is defined as the acute onset of dyspnea or a decrease in PaO2/FiO2 ratio, following an acute central nervous system (CNS) insult, in the absence of other obvious causes of lung injury. The most important cause of NPE is subarachnoid hemorrhage (SAH), followed by cerebraltrauma and epilepsy. The incidence of NPE after SAH in the literature may vary from 4 to 23% in greater studies, with SAH accounting for 43-73% of cases of NPE. It is postulated that an excessive adrenergic discharge would lead to pulmonary vasoconstriction and a rapid increase in pulmonary capillaryhydrostatic pressure, thus promoting fluid leakage to the alveolar space. NPE is generally treated in a supportive and conservative fashion, and patient management should be focused in the primary insult.



2018 ◽  
Vol 2018 ◽  
pp. 1-4 ◽  
Author(s):  
Daniel C. Sacher ◽  
Erika J. Yoo

Acute pulmonary edema following significant injury to the central nervous system is known as neurogenic pulmonary edema (NPE). Commonly seen after significant neurological trauma, NPE has also been described after seizure. While many pathogenic theories have been proposed, the exact mechanism remains unclear. We present a 31-year-old man who developed recurrent acute NPE on two consecutive admissions after experiencing witnessed generalized tonic-clonic (GTC) seizures. Chest radiographs obtained after seizure during both admissions showed bilateral infiltrates which rapidly resolved within 24 hours. He required intubation on each occasion, was placed on lung protective ventilation, and was successfully extubated within 72 hours. There was no identified source of infection, and no cardiac pathology was thought to be contributory.





2021 ◽  
Vol 18 (1) ◽  
Author(s):  
Yuefei Jin ◽  
Chao Zhang ◽  
Rongguang Zhang ◽  
Jingchao Ren ◽  
Shuaiyin Chen ◽  
...  

An amendment to this paper has been published and can be accessed via the original article.



Plants ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 846
Author(s):  
Gitishree Das ◽  
Han-Seung Shin ◽  
Rosa Tundis ◽  
Sandra Gonçalves ◽  
Ourlad Alzeus G. Tantengco ◽  
...  

Valerianaceae, the sub-family of Caprifoliaceae, contains more than 300 species of annual and perennial herbs, worldwide distributed. Several species are used for their biological properties while some are used as food. Species from the genus Valeriana have been used for their antispasmodic, relaxing, and sedative properties, which have been mainly attributed to the presence of valepotriates, borneol derivatives, and isovalerenic acid. Among this genus, the most common and employed species is Valerianaofficinalis. Although valerian has been traditionally used as a mild sedative, research results are still controversial regarding the role of the different active compounds, the herbal preparations, and the dosage used. The present review is designed to summarize and critically describe the current knowledge on the different plant species belonging to Valerianaceae, their phytochemicals, their uses in the treatment of different diseases with particular emphasis on the effects on the central nervous system. The available information on this sub-family was collected from scientific databases up until year 2020. The following electronic databases were used: PubMed, Scopus, Sci Finder, Web of Science, Science Direct, NCBI, and Google Scholar. The search terms used for this review included Valerianaceae, Valeriana, Centranthus, Fedia, Patrinia, Nardostachys, Plectritis, and Valerianella, phytochemical composition, in vivo studies, Central Nervous System, neuroprotective, antidepressant, antinociceptive, anxiolytic, anxiety, preclinical and clinical studies.



1996 ◽  
Vol 54 (2) ◽  
pp. 331-334 ◽  
Author(s):  
L. A. V Peireira ◽  
M. A. Cruz-Höfling ◽  
M. S. J. Dertkigil ◽  
D. L. Graça

The integrity of myelin sheaths is maintained by oligodendrocytes and Schwann cells respectively in the central nervous system (CNS) and in the peripheral nervous system. The process of demyelination consisting of the withdrawal of myelin sheaths from their axons is a characteristic feature of multiple sclerosis, the most common human demyelinating disease. Many experimental models have been designed to study the biology of demyelination and remyelination (repair of the lost myelin) in the CNS, due to the difficulties in studying human material. In the ethidium bromide (an intercalating gliotoxic drug) model of demyelination, CNS remyelination may be carried out by surviving oligodendrocytes and/or by cells differentiated from the primitive cell lines or either by Schwann cells that invade the CNS. However, some factors such as the age of the experimental animals, intensity and time of exposure to the intercalating chemical and the topography of the lesions have marked influence on the repair of the tissue.



2016 ◽  
Vol 172 (1) ◽  
pp. 46-55 ◽  
Author(s):  
C. Pouchieu ◽  
I. Baldi ◽  
A. Gruber ◽  
E. Berteaud ◽  
C. Carles ◽  
...  


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