Potassium Flashcards
1
Q
What are the normal ranges for serum K?
A
Adult 3.5-5.0 mEq/L
2
Q
What are critical values for potassium in a adult?
A
6.5mEq/L
3
Q
True of false
K s excreted by the kidneys and there is NO reabsorption of K by the kidneys.
A
This is true. Therefore, if K is not adequatly supplied in diet or by medication, serum K levels will drop rapidly
4
Q
What are 3 things that serum K levels depend on?
A
- Aldosterone: this hormone will tend to increase renal losses of K
- Sodium reabsorption: As Na is reabsorbed, K is lost
- Acid/base balance: Alkalotic states tend to lower K levels by causing a shift of K into the cells. Acidotic has the opposite effect
