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Peds - Chapter 23
Vocab
38
Nursing
Undergraduate 2
07/28/2013

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Term
acidemia
Definition
Decreased blood pH
Term
acidosis
Definition
Condition caused by excess acid in the blood
Term
active transport
Definition
A process of moving electrolytes against the concentration gradient, from lower to higher areas of concentration, requiring metabolic energy.
Term
alkalemia
Definition
Increased blood pH.
Term
alkalosis
Definition
Condition caused by too little acid in the blood.
Term
anion
Definition
Negatively charged particle.
Term
body fluid
Definition
Body water that has substances (solutes) dissolved in it.
Term
body surface area
Definition
Measurement of the relationship between height and weight, measured in squared meters (m2).
Term
buffer
Definition
Related acid-base pair that gives up or takes up hydrogen ions as needed to prevent large changes in the pH of a solution.
Term
cation
Definition
Positively charged particle.
Term
dehydration
Definition
The state of body water deficit.
Term
diffusion
Definition
Movement of molecules across a membrane from an area of higher concentration to lower concentration.
Term
edema
Definition
An accumulation of excess fluid in the interstitial spaces.
Term
electrolytes
Definition
Charged particles (ions) dissolved in body fluid.
Term
extracellular fluid
Definition
The fluid in the body that is outside the cells, including interstitial and intravascular fluid.
Term
filtration
Definition
Movement into or out of capillaries as the net result of several opposing forces.
Term
hypernatremic dehydration (or hypertonic dehydration)
Definition
Sodium loss that is proportionately greater than water loss.
Term
hypertonic fluid
Definition
Fluid that is more concentrated than normal body fluid.
Term
hyponatremic dehydration (or hypotonic dehydration)
Definition
Fluid loss characterized by a proportionately greater loss of sodium than water.
Term
hypotonic fluid
Definition
Fluid that is more dilute than normal body fluid.
Term
insensible fluid loss
Definition
Water loss not directly measurable or observable, such as through skin and respirations.
Term
interstitial fluid
Definition
Extracellular fluid that is between the cells and outside the blood and lymphatic vessels.
Term
intracellular fluid
Definition
The fluid in the body that is inside the cells.
Term
intravascular fluid
Definition
That portion of the extracellular fluid that is in the blood vessels.
Term
isonatremid dehydration (or isotonic dehydration)
Definition
Fluid loss that is not balanced by intake; the loss of water and sodium are in proportion.
Term
isotonic fluids
Definition
Fluid that has the same osmolality as normal body fluid.
Term
Kussmaul respirations
Definition
Increased rate and depth of respirations (hyperventilation).
Term
oncotic pressure
Definition
The part of the blood osmotic pressure that is due to plasma proteins; also called blood colloid osmotic pressure.
Term
osmolality
Definition
The amount of concentration of a fluid; technically, the number of moles of particles per kilogram of water in the solution.
Term
osmosis
Definition
Movement of water across a semipermeable membrane into an area of higher particle concentration.
Term
Pco2
Definition
The partial pressure of carbon dioxide in arterial blood.
Term
pH
Definition
Negative logarithm of the hydrogen ion concentration; used to monitor the acidity of body fluid.
Term
pitting edema
Definition
A "pit" or concave indentation that remains after an edematous area is pressed downward by the examiner's fingers.
Term
Po2
Definition
The partial pressure of oxygen in arterial blood.
Term
saline
Definition
A mixture of salt and water; normal saline refers to the mixture of salt and water in equal concentration in body fluids.
Term
sensible fluid loss
Definition
Water loss that is measurable and observable, such as urine and drainage from tubes.
Term
third-spacing
Definition
Loss or pooling of fluid in a body space.
Term
water intoxication
Definition
Intake of excessive water without sodium.
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