Potassium

What is the major cation of intracellular fluid?

What is 2nd?

Potassium (K+)

Magnesium

What is the counter part of potassium?

Na (sodium)

What is the Na+/K+ action do?

Maintain osmotic pressure (fluid balance)

Nerve transmission

Muscle contraction

What type of channels Plays a role in ATP generation, storage of glycogen & muscle protein synthesis and insulin release?

K+ channels

What is a great source of potassium?

banana, avocado, melons, potatoes

What is the most common potassium supplement?

potassium chloride

(other salts— citrate, aspartame, phosphate, bicarbonate, gluconate)

What is the drug amount of potassium limited to?

Why is it this limit?

99mg

Avoid SI lesions

T/f: potassium supplements are always recommended.

No (only under doctor care)

increases bp, kidney stone risk, increased urinary calcium excretion & salt sensitivity are all signs for?

Inadequate potassium intake

What other mineral is often low when someone has a potassium deficiency?

Mg

An increase in K often leads to a decrease in what?

Ca and Mg

T/f: hypokalemia is normaly due to improper intake.

T

What can excessive vomiting/diarrhea, dialysis, laxative, diuretic abuse do to potassium levels?

Decrease (hypokalemia)

Cardiac arrhythmias/arrest, muscle (respiratory) weakness, tetany (increased calcium in urine b/c can't balance sodium —> hypocalcemia) are all signs of what?

Hypokalemia

What is the TUL of potassium?

None

What are some signs of hyperkalemia?

cardiac arrhythmias/arrest, muscle weakness, paralysis