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Flashcards in Hyperkalemia Deck (11)
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1
Q

Definition of hyperkalemia

A

Too much potassium in the blood. Generally greater than 5.5 mEq/L

2
Q

Extracellular space

A
Intravascular space (inside blood vessels and lymphatic vessels)
Interstitial space (the space between cells)
3
Q

Intracellular space

A

space inside the cells

98% of potassium

4
Q

concentration of k inside cell

A

150 mEq/L

5
Q

concentration of K outside the cell

A

4.5 mEq/L

6
Q

What maintains the internal K balance

A

Na/K potassium pump 3 na out for 2 k in

7
Q

What is the importance of the electrochemical gradient of the membrane

A

sets resting membrane potential that is needed for contraction of smooth, cardiac, and skeletal muscle.

8
Q

What 3 ways/systems can we get rid of excess potassium?

A

kidneys
GI
Sweat

9
Q

What is an external balance shift of potassium

A

When we cannot excrete k fast enough like through kidneys, gi, or sweat

10
Q

What is an internal balance shift of k

A

when k moves out of cells into the blood or an issue when k can’t move into cells.

11
Q

What can cause an internal balance shift of k

A

Insulin deficiency. This is because insulin increases activity of na/k pump. without insulin there’s no k going into the cells.

Metabolic Acidosis. Hydrogen gets moved out of the blood into the cells in exchange for potassium