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Paralysis:  Loss of movement in a part of the body.

Perception:  The way the brain interprets what one sees.

Percutaneous endoscopic gastrostomy (PEG):  A form of feeding in which nutrition is delivered via a tube that is surgically inserted into the stomach or intestine through the skin.  Also known as a gastric tube.

Perseveration:  Being stuck on one idea, action or response and unable to move on from it.

Plaque:  A fatty buildup of cholesterol and calcium inside an artery.

Power of Attorney (POA):  A legal agreement to appoint another individual to make financial, property and health decisions if someone is not able to make his or her own decisions.  The appointed person is called a substitute decision maker (SDM) and makes decisions about personal matters in the best interests of that individual.

Pulmonary embolism:  A serious medical condition caused by a blockage of the pulmonary artery (which carries blood from the heart to the lungs), usually by a blood clot or fat.