hypokalemia Flashcards

1
Q

causes of hypokalemai

A

low intake (anorexia), diarrhoea/laxatives, sweating, vomiting

loop/thiazide diuretics, DKA (after correction as cells take in k), alkalosis (H released + k absorbed), hyperaldosteronism, Cushing syndrome

low mg

insulin overdose

BB

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2
Q

symptoms

A

lethargy, weakness, leg cramps, constipation, flaccid paralysis, hyporeflexia, hypertension

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3
Q

ECG changes of hypokalemia

A

prolonged PR interval, flatten T waves, ST depression, T wave inversion, prominent U waves

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4
Q

managment

A

k replacment <20 meq/l over 4 hours

IV causes burning

PO refeeding prefered

stop offending drugs

k sparing diuretics

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