Fluid Electrolyte Exam Flashcards
Osmosis
Movement of water against concentration gradient
First spacing
Normal distribution
Second spacing
Abnormal distribution
Third spacing
Fluid accumulation in part of body where it is not easily exchanged with ECF.
What is an interstitial fluid?
Refers to fluid located in the spaces between the cells and lymph
What is involved in transcellular fluid
Cerebrospinal, GI, pleural, synovial, peritoneal, intraocular, pericardial
Sodium Range and names
136-145. Hyponatremia, hypernatremia
Potassium range and names
3.5-5.0. Hypokalemia, hyperkalemia
Calcium range and names
9.0-10.5. Hypocalcemia, hypercalcemia
Magnesium range and names
1.3-2.1. Hypomagnesemia, hypermagnesemia.
What is hypervolemia and symptoms
Excess of extracellular fluid. Jugular venous distention, confusion, peripheral edema, pulmonary edema, seizures
What is hypovolemia and symptoms
Deficit of extracellular fluid. Skin turgor, cap refill and output are all decreased. Postural hypotension.
Hypotonic
Solutes are less concentrated than the cells. Given for intracellular dehydration
Hypertonic
Solutes are more concentrated than the cells. Given for hyponatremia (low sodium)
Isotonic
Same osmolality. No fluid movement. Given for fluid resuscitation or maintenance fluids. Increases fluid volume and BP.