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NURS8002 M5 Fluids, Electrolytes & Acid-Base Exam Questions And Answers
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NURS8002 M5 Fluids, Electrolytes & Acid-Base Exam Questions And Answers...
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NURS8002 M5 Fluids, Electrolytes & Acid-Base ExamQuestions And Answers
Describe the distribution of TBW in humans. - Answer ICF - 2/3 of TBW
ECF - 1/3 TBW
ECF: interstitial fluid (lymph, synovial, CSF, pericardial, etc.) and intravascular fluid
(blood plasma)
Distinguish between osmosis, osmolality and osmotic forces. - Answer Osmosis -
movement of water down the concentration gradient
Osmolality - concentration of molecules per weight of water-ie, the number of particles
in a solution
Osmotic Forces - amount of hydrostatic pressure required to oppose the osmotic
movement of water
Differentiate between filtration vs reabsorption. - Answer Filtration - movement of water
OUT of capillary into interstitial space
Reabsorption - movement of fluid INTO the capillary from the interstitial space
What forces determine whether there is filtration vs reabsorption? (4) - Answer -
capillary hydrostatic pressure (blood pressure)(moves it out)
- Capillary plasma protein oncotic pressure pulls it in
- Interstitial hydrostatic pressure pushes it in
- Interstitial oncotic pressure pulls it out
, Which forces favor filtration and which filter reabsorption? - Answer Filtration: capillary
hydrostatic pressure & interstitial oncotic pressure
Reabsorption: capillary oncotic pressure & interstitial hydrostatic pressure
The major forces for filtration and reabsorption are those - (complete the statement) -
Answer with the capillary [capillary hydrostatic and capillary oncotic]
Edema-accumulation of fluid in the interstitial space
Patho-increase in forces favoring fluid filtration from the capillaries or lymphatic
channels into the tissues
Describe the main intracellular and extracellular ions. -Answer Intracellular
Cation: K+
Anion: Phos, organic ions
Extracellular
Cation: Na+
Anion: Cl-, HCO3-
Sodium -Answer- major ECF cation
- controlled by aldosterone and natriuretic peptides
-controls water
-normal: 136-145
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