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Fluids
Test #5
46
Health Care
Post-Graduate
09/28/2008

Additional Health Care Flashcards

 


 

Cards

Term
Homeostasis
Definition
balance within the body of fluid,electrolytes,and acids and bases
Term
Why Water?
Definition
a medium for metabolic rxns w/in cells, transports nutrients,wastes,other substances, is a lubricant, insulator,and shock absorber, regulates and maintains body temp
Term
Inrtracellular Fluid (ICF)
Definition
found w/in the cells of the body;provides a medium for metabolic processes
Term
Extracellular Fluid (ECF)
Definition
found outside the cells; divided into intravascular fluid, interstitial fluid,lymph nodes,and transcellular fluid; carries the nutrients to and waste products from the cells
Term
Intravascular Fluid
Definition
(plasma) found within the vascular system; contains the protien albumin
Term
Interstitial Fluid
Definition
surrounds cells; no protein
Term
What are the major electrolytes in the ICF?
Definition
K+,Mg2+,HPO4-,SO4-
Term
What are the major electrolytes in the ECF?
Definition
Na+,Cl-,HCO3+
Term
Osmosis
Definition
movement of water across the cell membrane from a less concentrated to more concentrated; water moves to a higher concentration to equalize
Term
solvent
Definition
water
Term
solutes
Definition
electrolytes,O2,CO2, glucose,urea,amino acids, and protiens
Term
osmolality
Definition
concentration of solutes in body fluids
Term
isotonic
Definition
has same osmolality as body fluids
Term
hypertonic
Definition
solutions have higher osmolality than body fluids
Term
hypotonic
Definition
solutions have a lower osmolality than body fluids
Term
diffusion
Definition
the movement of molecules through a semipermeable membrane from an area of higher concentration to an area of lower concentration
Term
filtration
Definition
process by which fluid and solutes move together across a membrane from an area of high pressure to lower pressure
Term
active transport
Definition
less concentrated to more concentrated by ENERGY and moving with a carrier on outside of the cell membrane to inside
Term
hydrostatic pressure
Definition
the fluid or the pressure builds inside the capillary
Term
reabsorption
Definition
prevents fluid from moving, helps keep capillaries the same size
Term
colloid osmotic pressure
Definition
water is pulled from the interstitial space by albumin into the vascular compartment, important in maintaining vascular volume
Term
sources of input
Definition
oral fluids-1200-1500ml solid foods-1000ml metabolism-200ml
Term
sources of input during illness?
Definition
I.V.
enteral tube feeding-liquid
humidifiers-oxygen
enemas-water is absorbed in the intestines
Term
sources of output:
Definition
urine-1400-1500ml
feces-100-200ml
sweat,skin-100/350-400ml
breathing-350-400ml
Term
ways to get fluid out during illness?
Definition
vomiting,diarrhea,bleeding,wound drainage,suction
Term
Regulators:
Thirst Center
Definition
controlled by the hypothalamus,changes osmolality of the ECF by increasing it;also increases the fluids from the intestine;simplest mechanism for regulating fluid balance
Term
ADH
Definition
regulates water excretion from the kidneys,stimulated by anterior pituitary gland;allows more water to be absorbed into the blood because blood volume is low and osmalality is high
Term
Adrenal Cortex
Definition
releases aldosterone which interacts with the renin-angiotensin system
Term
ANF
Definition
released in cells that are in atrium of the heart-stimulated by the stretching of the atrial muscle or lots of blood volume in the atria; opposes the renin-angiotensin-aldosterone system by decreasing blood volume
Term
kidney
Definition
primary regulator;adjust the reabsoption of water from plasma filtrate and amount exceted as urine
Term
lungs
Definition
fluid is lossed from the lungs as vapor 350-400ml; sweat
Term
Types of IV fluids and uses: Hypotonic
Definition
shifts fluid from vessels to cell (makes cells round and fat);use on a patient that is dehydrated(ex.0.45% NS,0.33%NS); provides extra fluid
Term
Isotonic
Definition
keeps fluid in the vessels-comparable to plasma;give to patients that are having surgery, trauma to replace volume(ex.normal saline,lactated ringers,and D5W); exoands vascular volume
Term
Hypertonic
Definition
shifts fluid from cells to vessels(shrinkage);use on a patient that has excessive fluid volume and low blood pressure-pulling it from the cells into the vessels to raise blood pressure;don't give to patients that have kidney or heart disease or that are dehydration (ex.D5LR,DSNS,D50,45%NS,3-5%NS
Term
third shift
Definition
fluid shift from blood into a body area where it does not exchange with the ECF
Term
hypovolemia
Definition
fluid losses-diarrhea,vomiting,burns-fever
Term
hypervolemia
Definition
fluid gains;kidney/heart failure;brain swellng-hypertonic
Term
Assessment w/fluid balance
Definition
history of current illness medications dietary restrictions intake/output
Term
Physical Assessment
Definition
system review vital signs,weigh same time every day,lab results
Term
Common Tests: Hematocrit
Definition
39-47 female;44-52 male;in FVD hematocrit will inrease and in FVE it will decrease;diluted easily
Term
Urine specific gravity:
Definition
concentration of urine,FVE low, FVD high
Term
BUN
Definition
rough indicator of kidney function;normal BUN 10-20
Term
serum osmolality
Definition
affected by an increase or decrease in fluid concentrates; normal osmolality 280-300
Term
basic metabolic panel
Definition
where sodium goes water follows
Term
Sign and Symptoms of FVD (Hypovolemia)
Definition

decreased B/P, weak thready pulse. decreased urine output, decreased skin turgor, dry mucous membranes, sunken eyeballs, elevated temp., inceased pulse rate, concentrated urine, weakness, confusion

Term
Signs and Symptoms of FVE (hypervolemia)
Definition

weight gain, elevated b/o,full, bounding pulses,

moist labored respirations large volume of

pale urine, pitting edema, auscultation of crackles in the lungs, dyspnea, anxiety, distended jugular veins

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