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Fluid & Electrolytes
Basics
53
Nursing
Undergraduate 1
10/13/2013

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Term
Water
Definition
An essential nutrient and the most important need after Oxygen.
Term
Fluid Balance
Definition
Amount of fluid taken in and the lost is equal.

Body cells requires balnaced electrolytes, fluids, and pH(acids and bases)
Term
Electrolytes
Definition
charged particles capable of conducting electricity
Term
Recieve fluids/electrolytes
Definition
through foods,drinks and IV therapy
Term
Fluid requirements for an adult
Definition
2000-2500ml day
Term
Average adult weight
Definition
40-60% water
Term
Average infant weight
Definition
70-80% water
Term
Fluid Lost Normally
Definition
Urine,feces,perspiration,and expiration
Term
Fluid loss Abnormally
Definition
Vomiting, diarrhea,gastric suctioning, and bleeding
Term
Intracellular fluids(ICF)
Definition
found within the cells of the body
2/3 of the body fluid
Term
Extracellular fluids(ECF)
Definition
found outside the cells of the body
1/3 of total body.
Term
Intravascular or plasma
Definition
(ECF) found w/in the vascular system
Term
Interstitial
Definition
(ECF)surrounds the cells and includes lymph
Term
Transcellular
Definition
(ECF) CSF (cerebrospinal fluid,pleural,peritoneal synovial fluids
Term
ECF & ICF major components
Definition
Oyxgen from the lungs
Dissolved nutrients from GI tract
Excretory products of metabolism
Charged particles called IONS
Pos ions are called cations
neg ions are called anions
Term
Salts
Definition
many break up (dissociate) in water
Term
Sodium (Na+)
Definition
major cation in the ECF
Term
CL-
Definition
major anion of the ECF
Term
NaCl
Definition
major ions in ECF
Term
Potassium Chloride (KCL)
Definition
major ions in ICF
Term
Sodium excretion
Definition
Always accompanied by loss of H2O
Term
Loss of H20
Definition
Always accompanied by sodium excretion
Term
Osmosis
Definition
process by which fluids and electroltyes move through a semi permeable membrane
Term
Diffusion
Definition
Intermingling of molecules in liquids, gases, and solids by a random movement.
Term
Sodium(Na) serum
Definition
found in the ECF
Ref range: 135-145 mEq/L for adult
Term
Hyponatremia
Definition
serum sodium deficit
Term
Hypernatremia
Definition
serum sodium excess
Term
Potassium (K)serum
Definition
found in the ICF
Ref range: 3.5-5.0 mEq/L
Term
Hypokalemia
Definition
serum potassium deficit
Term
Hyperkalemia
Definition
serum potassium excess
Term
Thirst mechanism
Definition
primary regulator of fluid intake
Term
4 routes of fluid output
Definition
Urine
Insensible water loss
noticeable loss
loss through the intestines in feces
Term
insensible water loss
Definition
water loss not usually noticed or measured (breathing,skin)
Term
Noticeable loss
Definition
skin, (severe burns: a condition where a nurse has to be more concerned for fluid deficit);heavy sweating
Term
Fluid intake for average adults
Definition
2200-2700 mL
from all sources (drinks,vegetables,fruits,meats,ect.)
Term
Fluid output
Definition
2500 mL/day
in the form of sweat, urine, feces,expired air
Term
Dehydration/Fluid volume deficit
Definition
Fluid intake limited
Fluid loss greater than intake
Term
Dehydration/Fluid volume deficit causes
Definition
Vomiting
diarrhea
NG suction
bleeding
excessive sweating
excessive urination
Minimal po intake
Term
Signs of dehydration
Definition
dry lips and mucous membranes
dry skin & poor turgor
Urine output low and dark and concentrated
hypotension
pulse increases
Infants- no tears,sunken eyes and fontanels
Term
Fluid excess/Over-hydration
Definition
Intake exceeds output
Common in those with kidney,heart, and liver disease.
Excessive IV fluids
Term
Fluid excess/Over-hydration(Symptoms)
Definition
edema/swelling
lung congestion
elevated bp,pulse,and respiratory rate
jugular vein distention
urine dilute when kidneys functioning properly
Term
Nurses diagnoses(Fluid volume deficit)
Definition
r/t chronic illness and malnutrition AMB reports of fatigue,dry skin/mucous membranes and change of mental status
Term
Nurses diagnoses(Fluid volume excess)
Definition
r/t excess fluid or sodium intake AMB shortness of breath, orthopnea, weight gain and anasarca
Term
NPO
Definition
No foods or fluids
give frequent mouth care

Surgery,tests or illness
Term
Encourage Fluids (FF) force fluids)
Definition
offer fluids frequently
maintain adequate intake,to prevent UTI's and prevent dehydration
Term
Fluid Restriction
Definition
Fluids limited to prescribed amount
Kidney,heart or liver disease
Remove water pitcher
strict i&o
divide fluide intake 3 shifts
frequent oral care
Term
Output Includes
Definition
Urine(voided or catheter) out should not be less that 30 ml/hr (normal=30-50ml/hr)
Vomitus(emesis)
wound drainage
NG suction
Diarrhea (liquid stool measured) formed stool charted(record consistency,size,and oror)
Term
1 oz = 30ml
Definition
4 oz =120 ml
10oz = 300 ml
Term
Common measurements
Definition
1 quart = 1000 mls or 1 liter
1 pint = 16 oz or 500 mls
1 cup = 8 oz or 240 mls
1 tblspoon = 1/2 oz or 15 ml
1 tsp = 5 ml
Term
IV Therapy
Definition
primary responsibility of RN
Observe and report
redness,
swelling,
pain,
bleeding at IV site
Limit stress on tubing & assist with ambulation
Nursing students DO NOT adjust flow,change pump settings, insert IV, hang IV or fluidss until cleared with clinical instructer.
Term
Nurse intervention
Definition
keeping a record of all fluids taken in the body and all fluids lost from the body.
Term
Intake
Definition
fluids taken by mouth
popsicles
ice cream

Tube feedings & TPN
IV Fluids
Assess for SOB,coughing,& wheezing
strained cereals
puddings
custard
soups
liquid drinks etc
Term
Graduate
Definition
used to measure fluids for intake or output
Other containers graduated include;
urinals
pilgrim caps
specimen cups

bedpans must be emptied into graduate to measure.
for accurate output no toilet paper
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