Fluid Distribution and Edema Flashcards
Main funciton of Aldosteron
Increase Na reabosrption in principal cells of kidney
What happens to ICF and ECF when there is a net gain of water
Increase ICF and ECF volume
Decrease in ICF and ECF osmo
Blood V =
Plasma V / 1 - Htc
In olsmolarity Graph what are the X and Y axis
- X*: volume
- Y*: solute concentration or osmolality
When there is a net gain of body fluid, what compartment is always enlarged
ECF
What happens to ECF and ICF when there is a net gain of solute due to ingestion of salt, hypertonic infusion of solutes or hypertonic infusions of colloids
Increase ECF volume
Decrease ICF volume
Increase ICF and ECF osmo
Osmolality is
Concentration of particles per kg of solvent
Plasma volume is
Approximately 1/4 of ECF
Starling equation
Qf =
k[(P<span>C</span> + πIF) - (PIF + πC)]
Osmolar gap equation
ECF Effective osmolality =
2(Na) + Glucose/18 + Urea/2.8
ICF is
Approximately 2/3 of TBW
ECF is
Approximately 1/3 of TBW
Interstitial fluid is
Approximately 3/4 of ECF
What happens to ECF and ICF when there is an isotonic fluid loss such as hemorrhage, diarrhea or vomiting
Decrease in ECF volume
No change in osmo
How do you identify pulmonary edema due to Cardiogenic vs. Non-cardiogenic (ARDS)
Pulmonary wedge is increased in Cardiogenic but normal or decreased in ARDS
