Formulas Flashcards

1
Q

Free water deficit

A

0.6 x weight (kg) x (current Na/140) - 1

add insensible losses to keep patient at current level

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2
Q

Serum osmolarity

A

2(Na) + BUN/2.8 + Gluc/18

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3
Q

FENA

A

(Urine Na x Plasma Cr) / (Plasma Na x Urine Cr)

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4
Q

FEUrea

A

(Urine urea x Plasma Cr) / (Plasma urea x Urine Cr)

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