even if the kidneys take 24-48 hrs to start working, isotonic bicarb resus can often drop the K & improve pH enough to avoid needing dialysis (buys time for renal recovery)
-Restore volume, incr kidney perfusion leading to incr urine output + K elimination
-0.9% saline: pH 5.5, big Cl load. Worsen acidosis leading incr serum K
-LR superior: small amount of K in it won’t raise serum K. Won’t contribute to acidosis
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even if the kidneys take 24-48 hrs to start working, isotonic bicarb resus can often drop the K & improve pH enough to avoid needing dialysis (buys time for renal recovery)