Fluid balance Flashcards

1
Q

ICF contains high?

A

K+ and Mg2

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2
Q

Define tonicity?

A

A measure of the effectiveosmotic pressuregradient, as defined by thewater potentialof twosolutionsseparated by asemipermeable membrane.

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3
Q

Define the mole?

A

an amount of substance that contains the number of molecules equal to Avogadro’s number (6 x 1023).

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4
Q

A solution with low osmolarity has?

A

fewer solute particles per liter of solution

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5
Q

A solution with high osmolarity has?

A

more solute particles per liter of solution.

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6
Q

When solutions of different osmolarities are separated by a membrane permeable to water, but not to solute, water will move from?

A

The side with lower osmolarity to the side with higher osmolarity.

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7
Q

Define osmole?

A

the osmole is a non-SI unit of measurement that defines the number of moles of solute that contribute to the osmotic pressure of a solution.

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8
Q

Osmolality is a property of?

A

a particular solution and is independent of any membrane

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9
Q

Tonicity is a property of?

A

a solution in reference to the membrane.

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10
Q

Oncotic Pressure or Colloid oncotic pressure is the?

A

Proportion of the total osmotic pressure in plasma exerted by colloids. COP is only about 0.5 - 4% of the total osmotic pressure.

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11
Q

Tonicity is also referred to as?

A

effective osmolality.

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12
Q

Fluids with osmolality > 300mOsm/kg are?

A

hypertonic to plasma.

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13
Q

Fluids with osmolality < 300mOsm/kg are?

A

hypotonic to plasma.

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14
Q

Fluids with osmolality = 300mOsm/kg are?

A

Isotonic to plasma.

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15
Q

How many osmoles in the following?

0.1 moles litre NaCL

A

0.2 osmoles

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16
Q

How many osmoles in the following?

3.2mmols per litre of glucose.

A

Glucose does not dissacoiate in solution so is viewed as one molecule.
3.2 millimoles