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Immersion causes increased external hydrostatic pressure, leading to redistribution of blood from the periphery to the chest, which increases cardiac filling pressures and stroke volume, and also reduces total lung capacity. There is a movement of fluid from the alveolar capillaries into the alveoli and extravascular lung tissues, which ...
Acute lung injury may cause pulmonary edema directly through injury to the vasculature and parenchyma of the lung, causes include: Inhalation of hot or toxic gases [12] (including vaping-associated lung injury) Pulmonary contusion, i.e., high-energy trauma (e.g. vehicle accidents) Aspiration, e.g., gastric fluid
Consequences of pulmonary aspiration include no injury at all, chemical pneumonitis, pneumonia, or even death from asphyxiation. These consequences depend on the volume, chemical composition, particle size, and presence of infectious agents in the aspirated material, and on the underlying health status of the person.
Other causes of pulmonary edema that require rapid intervention and should be considered first include fluid overload, brain injury, and anaphylaxis. If when considering these differentials, there is no evidence for administration of excessive fluids, no focal signs suggesting a brain injury, and so signs of allergic reaction, one can then ...
Inhaled fluid can act as an irritant inside the lungs. Even small quantities can cause the extrusion of liquid into the lungs (pulmonary edema) over the following hours; this reduces the ability to exchange the air and can lead to a person "drowning in their own body fluid". Vomit and certain poisonous vapors or gases (as in chemical warfare ...
Salt water can also cause oxidative stress, dilution of pulmonary surfactant, breakdown of the blood-air barrier, cellular degradation and cell death. [3] Marine microorganisms and particulates can further exacerbate inflammatory processes, which may cause or contribute towards systemic symptoms seen with this condition.