Blood Chemistries Flashcards
1
Q
Hemoconcentration
A
dehydration; water depletion; labs are high normal or high; BUN:Cr ratio is >20:1 - only valid if pt has normal renal fn and normal muscle mass
2
Q
Hemodilution
A
overhydration; excessive water; labs are low normal or low
3
Q
hyper-
A
high serum concentrations
4
Q
hypo-
A
low serum concentrations
5
Q
Corrected calcium(correcting total serum calcium)
A
=measured total[Ca] + (0.8x(LLN albumin-[pt albumin]); do this when low albumin/malnutrition
6
Q
Anion Gap
A
=serum Na - (Cl + bicarbonate); ref range is 8-12mEq/L; >12mEq/L –> gap/metabolic acidosis
7
Q
Creatinine Clearance/Cockroft-Gault formula
A
=Clcr= [(140-age in yrs)(LBW)]/72xCr *0.85 for women
8
Q
LBW women
A
= 45kg +2.3kg/in over 5ft
9
Q
LBW men
A
= 50kg +2.3kg/in over 5ft
10
Q
DKA
A
Diabetic Ketoacidosis
