| pressure gradient |
The difference in hydrostatic pressure on either side of a membrane. As the difference in pressures rises, filtration increases from the area of high pressure to the area of low pressure.
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| pressure injector |
A device that delivers a substance to be injected, often controlled by a timing mechanism, at a specified pressure.
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| pressure of speech |
Loud and emphatic speech that is increased in amount, accelerated, and usually difficult or impossible to interrupt. The speech is not in response to a stimulus and may continue even though no one is listening. It may be prese
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| pressure relief device |
An air-filled, water-filled, or foam appliance designed to reduce pressure points caused by the patient’s body weight when seated or bedridden. Examples include wheelchair cushions and air or water flotation mattresses.
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| pressure support ventilation |
A type of assisted ventilation that supplements a spontaneous breath. The patient controls the frequency and the duration and flow of inspiration from the ventilator.
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