Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
6 Cards in this Set
- Front
- Back
|
How to hypertonic solutions move electrolytes? |
IC to EC |
|
|
What harm can hypotonic solutions cause? What osmolality must these fluids be at to cause this? |
hypotonic solutions less than 150 mOsm/L can cause fluid to shift from the EC to IC which can lead to cellular over hydration -can cause RBCs to burst, hemolysis -bran cells can swell, causing cerebral edema and herniation (what can happen in hyponatremia) |
|
|
What is the osmolarity of: Plasma? NS? D5W? D5W/NS? 20 mEq KCl? |
Plasma = 275-290 mOsm/L
NS = 287 mOsm/L D5W = 287 mOsm/L D5W/NS = 565 mOsm/L 20 mEq KCl = 40 mOsm/L |
|
|
How is plasma osmolality calculated? |
(2 x Na) + (glucose/18) + BUN/2.8 |
|
|
What does low Posm cause fluids to do? What can it lead to? |
Low Posm causes cellular swelling which can lead to permanent neurological problems |
|
|
What does high Posm cause fluids to do? |
High Posm causes cellular dehydration |
