Category: P
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Percutaneous electrical nerve stimulation
A treatment for pain in which weak electrical currents are applied to acupuncture needles inserted into trigger points or dermatomes near painful body parts. PENS is sometimes used to treat episodic low back pain and other regional pain syndromes. It may be used as an alternative to TENS.
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Percutaneous coronary intervention
Any procedure in which catheters are placed within the coronary arteries to study them or open them when they are obstructed. Examples of this are balloon angioplasty, atherectomy, and stent placement.
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Percussor
A device used for diagnosis by percussion, consisting of a hammer with a rubber or metal head.
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Palpation percussion
Percussion in which the examiner uses his or her fingers to feel vibrations that are produced within the body, instead of listening for the sounds produced by striking the body.
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Percuss
To tap parts of the body to aid diagnosis by listening carefully to the sounds they emit.
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Per continuum
Continuous, as in the spread of an inflammation from part to part.
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Per contiguum
Touching, as in the spread of an inflammation from one part to an adjacent structure.
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Percolator
An apparatus used for extraction of a drug with a liquid solvent.
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Percolate
To allow a liquid to seep through a powdered substance.
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Perceptual completion
An optical illusion in which a boundary, color, texture, light, or object is seen where one does not actually exist. This defect in visual perception, also known as “filling-in,” commonly is experienced by people with visual field cuts or defects (scotoma).