Surgery Books Flashcards

1
Q

What is the equation for FENa?

A

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

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2
Q

In a patient that is post-op, a FENa >1 suggests what?

A

Renal failure (vs dehydration)

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3
Q

In a patient that is post op, urine Na concentration of 10-20 mEq suggests what?

A

Dehydration, vs 40 mEq suggests renal failure

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4
Q

What electrolyte level may prolong a post-op ileus?

A

Hypokalemia

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5
Q

How are linear skull fractures treated?

A

If closed, they are left alone. Open Fxs require wound closure. If comminuted or depressed, they have to be treated in the operating room.

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