fluid

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Related to isotonic fluid: Hypotonic solution

fluid,

any substance that is able to flow. Of the four states of matterstates of matter,
forms of matter differing in several properties because of differences in the motions and forces of the molecules (or atoms, ions, or elementary particles) of which they are composed.
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, only a solidsolid,
one of the three commonly recognized states in which matter occurs, i.e., that state, as distinguished from liquid and gas, in which a substance has both a definite shape and a definite volume.
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 is not a fluid, since it has a definite shape that is not readily changed. Any liquidliquid,
one of the three commonly recognized states in which matter occurs, i.e., that state, as distinguished from solid and gas, in which a substance has a definite volume but no definite shape.
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, gasgas,
in physics, one of the three commonly recognized states of matter, the other two being solid and liquid. A substance in the gaseous state has neither definite shape nor definite volume. Like liquids, gases are fluids and assume the shape of their containers.
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, or plasmaplasma,
in physics, fully ionized gas of low density, containing approximately equal numbers of positive and negative ions (see electron and ion). It is electrically conductive and is affected by magnetic fields.
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 is classed as a fluid.
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fluid

[′flü·əd]
(physics)
An aggregate of matter in which the molecules are able to flow past each other without limit and without fracture planes forming.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

fluid

1. a substance, such as a liquid or gas, that can flow, has no fixed shape, and offers little resistance to an external stress
2. capable of flowing and easily changing shape
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
At 22[degrees]C in 9 [micro]g/mL sodium chloride, 0.05 mg/mL glucose, mixture of 9 [micro]g/mL sodium chloride and 0.05 mg/mL glucose (1:1 V/V), multielectrolytic isotonic fluid, and pediatric fluid after 2 days of incubation, there were no changes in the concentrations.
However, it has been reported that even the infusion of isotonic fluid does not eliminate the risk of hyponatremia.
There was no difference in the incidence of moderate or severe hyponatremia in children who received hypotonic or isotonic fluids (a trend was noted toward increased incidence of hyponatremia in those receiving hypotonic fluids postoperatively).
Although up till now the recommended intravenous fluid therapy for DKA is isotonic fluids and this therapy can lead to hyperchloremia but may be in near future more customized fluids (like balanced salt solutions) will be increasingly used to prevent hyperchloremia and its adverse effects.15 Mean length of PICU stay was two days which is again less than that earlier reported from PICU.8 Other less common complications observed included thrombotic thrombocytopenic purpura (TTP) in two patients which were managed with plasmaphresis and other supportive therapies.
The woman was transferred to the intensive care unit where she received isotonic fluids and two units of blood.
Therefore, intravenous administration of isotonic fluids is considered to be the best methods for treating severely dehydrated and acidotic calves with diarrhea (Simmons et al., 1985; Roussel and Kasari, 1990; Walker et al., 1998; Berchtold, 1999; Senturk, 2003).
These goals are usually achieved without use of vasopressors, using isotonic fluids and adjustment of anesthetic doses.
In 2003, Moritz et al recommend that isotonic fluids (D5W0.9%NS or 0.9%NS) should be used as maintenance intravenous fluid for prevention of hyponatremia in hospitalized children.4 Recently, a multicenter prospective randomized study demonstrated that use of isotonic solution as a maintenance fluid in critically ill children decreased the frequency of hospital-acquired hyponatremia.5 This and several other studies have also shown that the use of isotonic fluids as MIVF is safe and is not associated with hypernatraemia, hypertension or renal failure.