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Hypotonic contraction: 3% nacl
loss of na (concentration should be about 130)
SE: monitor for fluid overload
metabolic alkalosis: NAcl and Kcl
due to: Gastric loss, sodium bicard excess, hypoventilation, incrased renal excretion of bicarb, accumulation of organic acids
metabolic acidosis: sodium bicarb
due to: Chronic renal failure, diarrheam lactic acidosis, ketoacidosis, aspirin and methanol poisoning
Caution: infuse careful rapid conversion dangerous
Hypokalemia (< 3.5): Kcl, kdur, micro k
SE: PO: GI irritation(especially not sustained release) rare: hyperkalema
IV:Hyperkalemia, renal failure, ECG changes
Hyperkalemia (>5): stop diet K and K sparing drugs, suport cardiac troubles, use glucose and insulin infusion, correct acidosis with sodiumbicarb
at 8-9: cardaic arrest and death
hypomagnesemia ( < 1.3): IV magnesium (frank)
milk of magnesia
causes: Diarrhea, hemodialysis, kidney dz, prolonved Iv feed
PO IM IV
SE: Neuromuscular blockade, resp paralysis,
Hypermagnesemia: AV block
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