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Scientist Otto Warburg, whose research activities led to the formulation of the Warburg hypothesis for explaining the root cause of cancer.. The Warburg hypothesis (/ ˈ v ɑːr b ʊər ɡ /), sometimes known as the Warburg theory of cancer, postulates that the driver of carcinogenesis (cancer formation) is insufficient cellular respiration caused by insult (damage) to mitochondria. [1]
Generally, it is believed that the cancer arises, or a pre-existing cancer is encouraged, during the process of repairing the trauma, rather than the cancer being caused directly by the trauma. [83] However, repeated injuries to the same tissues might promote excessive cell proliferation , which could then increase the odds of a cancerous mutation.
Metastasis is the spread of cancer to other locations in the body. The dispersed tumors are called metastatic tumors, while the original is called the primary tumor. Almost all cancers can metastasize. [39] Most cancer deaths are due to cancer that has metastasized. [40]
It is generally regarded, based on animal models and human studies, that volutrauma is the most harmful aspect of mechanical ventilation. [2] [3] [4] This may be regarded as the over-stretching of the airways and alveoli. [citation needed] During mechanical ventilation, the flow of gas into the lung will take the path of least resistance.
Ventilator-associated pneumonia (VAP) is a type of lung infection that occurs in people who are on mechanical ventilation breathing machines in hospitals. As such, VAP typically affects critically ill persons that are in an intensive care unit (ICU) and have been on a mechanical ventilator for at least 48 hours.
Artificial ventilation or respiration is when a machine assists in a metabolic process to exchange gases in the body by pulmonary ventilation, external respiration, and internal respiration. [1] A machine called a ventilator provides the person air manually by moving air in and out of the lungs when an individual is unable to breathe on their own.
The world is running out of helium. Helium is the only element cold enough to keep MRI machines cool enough to function. ... strokes, spinal cord injuries, liver diseases and cancer. The 3D images ...
Hyperoxia is the state of being exposed to high levels of oxygen; it may refer to organisms, cells and tissues that are experiencing excessive oxygenation, [1] or to an abnormally high oxygen concentration in an environment (e.g. a body of water).