Module 9 Fluid, Electrolyte,and Acid Base Balance Flashcards

1
Q

what are the two largest constituents of the body fluids?

A

water and electrolytes

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2
Q

the four(4) main functions of water in the body are?

A
  1. to act as a vehicle for the transportation of substances to and from the cells.
  2. to aid heat regulation by providing perspiration, which evaporates.
  3. to assist in mainenance of H balance in the body
  4. to serve as a medium for the enzymatic action of digestion
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3
Q

more than ____ of the body’s weight is water.

A

half.

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4
Q

the greater amount of fat in the body would increase or decrease the amount of water volume in the body?

A

it would decrease because fat contains less fat then other tissues.

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5
Q

body water continuously moves where in the body?

A

in and out of the blood, through the lymph vessels, between the cells, and in and out of the cells.

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6
Q

electrolytes

A

are minerals or salts that are dissolved in body fluid

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7
Q

how are electrolytes measured?

A

mEq/L

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8
Q

the difference between ions, cations, and anions.

A

ions are the particles that have a tiny electrical charge, cations are the positive charge; anions are the negative charge.

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9
Q

the major source of electrolytes is from where?

A

the diet you consume.

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10
Q

Normal range of Sodium (Na)

A

135-145 mEq/L

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11
Q

normal range of Potassium (K)

A

3.5-5.0 mEq/L

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12
Q

normal range of Calcium (Ca)

A

8.4-10.6 mg/dl

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13
Q

normal range of Magnesium (Mg)

A

1.3-2.1 mg/dl

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14
Q

Phosphate (PO4)

A

2.7-4.5 mg/dL

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15
Q

Chloride (CL )

A

96-106 mEq/L

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16
Q

Bicarbonate(HCO3)

A

22-26 mEq/L

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17
Q

nonelectrolytes

A

the intermediate products of metabolism– amino acids (protiens), glucose, and fatty acids are all nonelectrolytes. They remain bound together when dissolved in body fluid.

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18
Q

Blood

A

the body has 4 to 6 L of circulating blood volume. Erthrocytes, Leukocytes, platelets, are the blood cells that are carried in plasma.

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19
Q

intracellular

A

2/3 of total body fluid. within the cell high in potassium content

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20
Q

extracellular

A

1/3 of total body water outside of the cell.. transports water, nutrients, oxygen to and from the cells. High in sodium content. regulated by renal, metabolic, and neurologic factors.

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21
Q

ECF has three types:

A

intravascular, interstitial, and transcellular

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22
Q

dehydration(quick def)

A

removal of water from a tissue

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23
Q

hypovolemia (quick def)

A

decreased volume of plasma

24
Q

intravascular fluid

A

fluid within blood vessels; consists of plasma and fluid with cells, large amounts of protein and electrolytes

25
Q

interstitial fluid

A

fluid in spaces surrounding the cells, high in sodium content

26
Q

transcellular fluid

A

saliva, aqueous humor, pleural, synovial, gastro, unirnary, peritoneal fluids

27
Q

the main organ through which fluid excretion is achieved?

A

the kidneys

28
Q

what hormones can affect urine output

A

ADH, aldosterone, and atrial natriuretic peptide(ANP)

29
Q

what happens when ADH increases?

A

the renal tubules reabsorb more water, and urine output decreases.

30
Q

more ADH is released how?

A

when the blood becomes more concentrated, circulating blood volume is decreased, or the person is expierencing pain, nausea, or stress

31
Q

aldosterone is released by what?

A

by the adrenal cortex when ECF volume is low or when sodium concentration is elevated, causing reabsorbtion of sodium from kidney tubules.

32
Q

ANP does what

A

acts to protect the body from fluid overload and is released from sites in the myocardium and the brain.

33
Q

diffusion

A

is the process by which substances move back and forth across the membrane until they are evenly distributed throughout the available space. think of COFFEE and CREAM

34
Q

osmosis

A

refers to the movement of pure liquid across a membrane. H2O is diffused from osmosis.

35
Q

isotonic

A

solution of equal solute concentration

36
Q

hypertonic

A

greater concentration

37
Q

hypotonic

A

of less concentration

38
Q

filtration

A

is the movement of water and suspended substances outward through a semiermable membrane

39
Q

hydrostatic pressure

A

pressure exerted by fluid; the force promotes filtration, forcing movement of water and electrolytes through the capillary wall to the interstitial fluid.

40
Q

active transport

A

requires cellular energy, this force can move molecules into cells regardless of their electrical charge or the concentrations already in the cell. may be able to move a substance from high to low concentration

41
Q

what is the energy source for active transport

A

ATP

42
Q

signs and symptoms of dehydration

A

dizzy, confusion, cool dry skin, dark urine, decreased BP, UO, dry lips, thirst, weak,

43
Q

it is important to remember that water follows what?

A

sodium in the body, the sodium concentration causes an osmotic pull, and water goes to where that concentration is highest.

44
Q

those at risk for deficient fluid volume are whome?

A

patients unable to take in quanities of fluid, patients who lose excessive amounts of fluid through vomitting or diarrhea.

45
Q

treatments that can cause dehydradtion are?

A

diuretic therapy and gastrointestinal suction without fluid replacement.

46
Q

where do you check for skin tugor?

A

over the abdomen, forarm, sternum, forhead, or thigh

47
Q

in the infant what is a big sign of dehydration

A

sunked eyeballs, and dpression of the anterior fontanel

48
Q

how can you have too much fluid?

A

if they reiceve fluid to quickly, are given tap water enemas, or are persuaded to drink more fluids than they can elimante

49
Q

sings of overhydration

A

weight gain, crackles in the lungs, slow bounding pulse, elevated blood pressure, and possibly edema

50
Q

what else can occur with overhydration

A

hypervolemia

51
Q

hypevolemia

A

excessive blood volume

52
Q

in the bedridden patients the fluid accumlates in what region

A

the sacral region ( dependent edema)

53
Q

where is edema most visible

A

hands and the face

54
Q

causes of edema

A
  1. kidney failure 2. heart failure. 3. live failure. 4. hormonal disorders involving the overproduction of aldosterone and ADH
55
Q

local edema may be caused by what?

A

infection or injury and the resulting inflammation