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A sudden release of sufficient pressure in saturated tissue results in a complete disruption of cellular organelles, while a more gradual reduction in pressure may allow accumulation of a smaller number of larger bubbles, some of which may not produce clinical signs, but still cause physiological effects typical of a blood/gas interface and ...
Flammer syndrome is a described clinical entity comprising a complex of clinical features caused mainly by dysregulation of the blood supply. It was previously known as vascular dysregulation. [1] It can manifest in many symptoms, such as cold hands and feet, and is often associated with low blood pressure.
The amount of gas dissolved in a liquid is described by Henry's Law, which indicates that when the pressure of a gas in contact with a liquid is decreased, the amount of that gas dissolved in the liquid will also decrease proportionately. On ascent from a dive, inert gas comes out of solution in a process called "outgassing" or
Even without producing acute signs and symptoms, vascular gas bubbles can be an indicator of the magnitude of decompression stress, and as most dives where gas bubbles form only produce minimal symptoms, they may be useful as an indicator of the risk of injury in a particular dive, and therefore could be useful to help develop safer procedures.
Hypotension, also known as low blood pressure, is a cardiovascular condition characterized by abnormally reduced blood pressure. [1] Blood pressure is the force of blood pushing against the walls of the arteries as the heart pumps out blood [2] and is indicated by two numbers, the systolic blood pressure (the top number) and the diastolic blood pressure (the bottom number), which are the ...
Most injuries are caused by inexperience using high-pressure equipment, improper use, inadequate training, negligence, exhaustion at the end of the shift, or equipment rupture. [ 5 ] [ 6 ] Paints, paint solvents, grease, and fuel oils (diesel, paraffin, and gasoline) are the substances that are injected the most frequently, but reports of ...
Low blood pressure and tachycardia are often seen in shock. Other symptoms depend on the underlying cause. [4] The physiology of obstructive shock is similar to cardiogenic shock. In both types, the heart's output of blood (cardiac output) is decreased. This causes a back-up of blood into the veins entering the right atrium. [3]
The first changes in vital signs seen in hypovolemic shock include an increase in diastolic blood pressure with narrowed pulse pressure. [4] As volume status continues to decrease, systolic blood pressure drops. As a result, oxygen delivery to vital organs is unable to meet the oxygen needs of the cells.