Renal Body Fluid Compartments -Rogers Flashcards
(38 cards)
total fluids ingested in a day
2100 total intake = 2300
volume contraction
ECF volume is decreased = decreased blood volume, lowered BP
volume expansion
ECF volume increases
Hyperosmotic
osmolarity in the ECF increased
amount of water in the body
50% - 70%
amount in ICF and ECF
ICF : 2/3 ECF : 1/3
ECF is what
interstital fluid (around cells) plasma (in blood vessels) * divided by capillary wall
ICF is what
intracellular fluid only inside cells
water is added where and leaves from the body from where
leaves and enters the body from the ECF
controlling the plasma does what to the interstitual fluid
controls the intestitiual fluid the same way
non-electrolyte electrolyte
nonelectrolyte : cant dissolve in water (lipids, glucose, urea) and have no charge electrolytes : dissolve in water and have charge ****can change fluid volumes more****
ICF composition
K+, PO4-3, anion proteins
ECF composition
NA+, Cl-, HCO-3, some anion proteins (ONLY in plasma) no proteins in interstitual fluid
hypotonic cell environment does what
swells the cell
Na+ concentration in ECF
140mEq
N + concentration ICF
5mEg
3 main solutes in the ECF
sodium Glucose Urea (BUN)
Serum osmolality calculation
Osmolality = (NA+ x 2) + (glucose)/18 + (BUN)/2.8
Serum osmolality calculation eyeball it
plasma osmolality = 2 (plasma NA+)
when is ADH secreted from PP
andiotensin 2 low preload high plasma osmolality sympathetic activation =Increase BP (H2O and some NA reabsorption)
ANP has what 3 functions
- Arterial dilation (decrease TPR) 2. increase fluid loss (decrease preload_ 3. inhibit renin, aldosterone, ADH (decreases TPR and preload)
sweating and lots of fluid loss does what
water moves out from ICF to the ECF and cells shrink
sweating a lot and drinking equally as much water as lost
increase water in ECF and no NA+ increased (hyposmolarity) = cells swell
2 types of dehydration
- Hypernatremic dehydration 2. Hyponatremic dehydration

