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Trousseau's syndrome is a rare variant of venous thrombosis that is characterized by recurrent, migratory thrombosis in superficial veins and in uncommon sites, such as the chest wall and arms. This syndrome is particularly associated with pancreatic, gastric and lung cancer and Trousseau's syndrome can be an early sign of cancer [ 2 ] [ 3 ...
Transmural pressure is the difference in pressure between two sides of a wall or equivalent separator. According to myogenic theory smooth muscle contract in response to increased transmural pressure and relax to decreased transmural pressure For body vasculature or other hollow organs, see Smooth muscle#External substances
On the other hand, gravity causes a gradient in blood pressure between the top and bottom of the lung of 20 mmHg in the erect position (roughly half of that in the supine position). Overall, mean pulmonary venous pressure is ~5 mmHg. Local venous pressure falls to -5 at the apexes and rises to +15 mmHg at the bases, again for the erect lung.
A CXR of a person with lung cancer, which was causing superior vena cava syndrome A CT image showing compression of the right hilar structures by cancer The main techniques of diagnosing SVCS are with chest X-rays (CXR), CT scans , transbronchial needle aspiration at bronchoscopy and mediastinoscopy . [ 6 ]
People who are affected by a PSP are often unaware of the potential danger and may wait several days before seeking medical attention. [15] PSPs more commonly occur during changes in atmospheric pressure, explaining to some extent why episodes of pneumothorax may happen in clusters. [13] It is rare for a PSP to cause a tension pneumothorax. [12]
The pulmonary arteries carry deoxygenated blood to the lungs, where carbon dioxide is released and oxygen is picked up during respiration. [3] Arteries are further divided into very fine capillaries which are extremely thin-walled. [4] The pulmonary veins return oxygenated blood to the left atrium of the heart. [3]
Transmural denotes something across a wall or other equivalent: Transmural care is the interface between primary and secondary care in medicine Transmural pressure (disambiguation) , is change in pressure between two separated compartments
Veins (/ v eɪ n /) are blood vessels in the circulatory system of humans and most other animals that carry blood towards the heart.Most veins carry deoxygenated blood from the tissues back to the heart; exceptions are those of the pulmonary and fetal circulations which carry oxygenated blood to the heart.