Fluids Flashcards

1
Q

reason for fluids

A

-dehydration (n.v.d)
-ileus, GI tract
-unconscious

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2
Q

isotonic fluids have ______ concentration

A

equal, same (salt and water in ICF/ECF is same)

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3
Q

hypotonic fluids have a ________ concentration than serum
_______ moves _______ cell

A

lower
water
into

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4
Q

hypertonic have _______ concentration than plasma
______ moves _______ cell

A

higher
water
out of

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5
Q

normal osmolality range

A

280-300

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6
Q

_____ is directly related to serum osmolality

A

Na+

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7
Q

serum osmolality directly reflects the concentration of :

A

-sodium
-Blood urea nitrogen
-glucose

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8
Q

factors increasing osmolality (7)

A

-dehydration
-free water loss
-DI
-hypernatremia
-hyperglycemia
-stroke or head injury
-renal tubular necrosis

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9
Q

factors decreasing osmolality (5)

A

-fluid volume excess
-SIADH
-renal failure
-hyponatremia
-overdehydration

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10
Q

isotonic fluids _____ where they are being infused

A

stay

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11
Q

when infusing isotonic solution, what happens to RBCs

A

stay the same size

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12
Q

isotonic solutions

A

-D5W
-normal saline
-LR

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13
Q

what is special about D5W? what pts do we use with caution?

A

isotonic outside body, hypotonic inside body
cells swell
diabetes (increase BG), head trauma (altered LOC)

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14
Q

what pts do we use NS with caution

A

renal or heart failure - fluid overload

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15
Q

what pts do we use LR with caution

A

-CHF
-renal insufficiency

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16
Q

hypotonic solutions cause cells to what? because?

A

swell, water floods into cell

17
Q

hypotonic solutions

A

-0.45% NS
-0.33% NS
-0.225% NS
-2.5% dextrose in water

18
Q

when would we give a hypotonic solution

A

hypernatremia

19
Q

caution with which pts for hypotonic solutions

A

head trauma
diabetes (D5W)
burns

20
Q

what happens to the cells with hypertonic solution? because?

A

cells shrink
water leaves the cells to ECF

21
Q

hypertonic solutions are normally given through what?

A

central line, less likely to infiltrate

22
Q

hypertonic solutions _____ risk of _____, stabilize _____, and regulates ________

A

decrease risk of edema
stabilize BP
regulate urine output

23
Q

use caution in hypertonic fluids in what pts

A

diabetes
impaired heart or kidney function

24
Q

hypertonic fluids

A

-D5NS
-D51/2NS
-D51/4NS
-D5LR
-D10W

25
colloids are used for what?
volume expansion
26
what to watch for with colloids
-fluid overload - neck vein distention, increased BP, resp, distress -monitor fluid balance (I&O, VS, HR, RR) -monitor electrolytes
27
signs of fluid overload
SOB, dyspnea, crackles
28
causes of fluid volume deficit (hypovolemia)
-vomiting -severe dehydration -trauma -burns -meds (diuretics)
29
s/s of hypovolemia
-DRY mucous membranes -low BP -high HR -postural hypotension (fall risk) -dark urine
30
nursing interventions for hypovolemia
-oral rehydration -increase fluid intake -IV hydration
31
what to do first when a pt. comes in with fluid loss
weight (baseline)
32
fluid volume overload - hypervolemia causes
-rapid infusion rate -cardiac, hepatic, or renal dz -elderly
33
s/s of hypervolemia
-edema -weight gain (2lbs / day, 5lbs/week) -crackles in lungs -JVD -crackles -dyspnea , shallow resp. -high BP -decreased lab values
34