NUR206 Fluids & Electrolytes: Complete Guide
Body water over lifespan Right Ans - Decreases
We become raisins!
2 fluid compartments Right Ans - Intracellular
Extracellular
Fluid compartment: intracelullar Right Ans - Within the cell
•2/3 of body's fluid is within the cell
Fluid compartment: extracellular Right Ans - Interstitial
Intravascular (plasma)
Transcellular
Examples:
•CSF
•Digestive juices
•Mucus
Calculation of Fluid Gain or Loss Right Ans - •One liter of water weighs 2.2
lb (1 kg)
•Body weight change is a great indicator of overall fluid volume loss or gain
What is the most accurate way to determine fluid gain or loss Right Ans -
Weighing Is the most accurate way.
Electrolytes and the two types of ions Right Ans - •Substances whose
molecules dissociate into ions when placed in water
-Cations: positively charged
-Anions: negatively charged
An Equivalent is an expression of the chemical combining power of an
electrolyte in a fluid
Electrolytes concentration is expressed in... Right Ans - mEq/L
, Mechanisms controlling Fluid and Electrolyte Movement Right Ans -
Diffusion
Osmosis
Diffusion Right Ans - Movement of molecules from high to low
concentration
Osmosis Right Ans - Movement of water across a membrane from LOW
solute concentration to HIGH
Osmotic pressure Right Ans - Amount of pressure required to prevent the
inward flow of water across a semipermeable membrane
Osmolarity measures the Right Ans - total milliosmoles/L of
solution(mOsm)
Osmolality measures the Right Ans - number of milliosmoles/kg of water
Osmotic Pressure Effects on Red Blood Cells Right Ans - Hypertonic
Isotonic
Hypotonic
Osmolarity vs tonicity Right Ans - are related but distinct concepts. ... The
terms are different because osmolarity takes into account the total
concentration of penetrating solutes and non-penetrating solutes, whereas
tonicity takes into account the total concentration of only non-penetrating
solutes.
Isotonic RBC Right Ans - In an isotonic environment, the relative
concentrations of solute and water are equal on both sides of the membrane.
Red blood cell normal
Hypotonic RBC Right Ans - red blood cell will bloat up and may explode,
Hypertonic RBC Right Ans - water will leave the cell, and the cell will shrink
Body water over lifespan Right Ans - Decreases
We become raisins!
2 fluid compartments Right Ans - Intracellular
Extracellular
Fluid compartment: intracelullar Right Ans - Within the cell
•2/3 of body's fluid is within the cell
Fluid compartment: extracellular Right Ans - Interstitial
Intravascular (plasma)
Transcellular
Examples:
•CSF
•Digestive juices
•Mucus
Calculation of Fluid Gain or Loss Right Ans - •One liter of water weighs 2.2
lb (1 kg)
•Body weight change is a great indicator of overall fluid volume loss or gain
What is the most accurate way to determine fluid gain or loss Right Ans -
Weighing Is the most accurate way.
Electrolytes and the two types of ions Right Ans - •Substances whose
molecules dissociate into ions when placed in water
-Cations: positively charged
-Anions: negatively charged
An Equivalent is an expression of the chemical combining power of an
electrolyte in a fluid
Electrolytes concentration is expressed in... Right Ans - mEq/L
, Mechanisms controlling Fluid and Electrolyte Movement Right Ans -
Diffusion
Osmosis
Diffusion Right Ans - Movement of molecules from high to low
concentration
Osmosis Right Ans - Movement of water across a membrane from LOW
solute concentration to HIGH
Osmotic pressure Right Ans - Amount of pressure required to prevent the
inward flow of water across a semipermeable membrane
Osmolarity measures the Right Ans - total milliosmoles/L of
solution(mOsm)
Osmolality measures the Right Ans - number of milliosmoles/kg of water
Osmotic Pressure Effects on Red Blood Cells Right Ans - Hypertonic
Isotonic
Hypotonic
Osmolarity vs tonicity Right Ans - are related but distinct concepts. ... The
terms are different because osmolarity takes into account the total
concentration of penetrating solutes and non-penetrating solutes, whereas
tonicity takes into account the total concentration of only non-penetrating
solutes.
Isotonic RBC Right Ans - In an isotonic environment, the relative
concentrations of solute and water are equal on both sides of the membrane.
Red blood cell normal
Hypotonic RBC Right Ans - red blood cell will bloat up and may explode,
Hypertonic RBC Right Ans - water will leave the cell, and the cell will shrink
