Labs

Question 1

VBG (peripheral) vs ABG

pH
PCO2
HCO3

Answer 1

pH 0.03-0.04 < arterial
PCO2 3-8 mmHg > arterial
HCO3 1-2 mEq/L > arterial

Question 2

Winter’s formula

Answer 2

PCO2 = 1.5 x HCO3 + 8 (+or-2)

Used to determine if an appropriate respiratory compensation exists

Question 3

Anion gap

Answer 3

Na - (Cl + HCO3) = 7-13 (normal)

Question 4

Delta/delta

Answer 4

(Pt’s AG - 12) / (24- pt’s HCO3)

Determines if a mixed acid/base disorder is present

Question 5

CBC

Answer 5

5-12
130-150 150-400

                                                             0.35-0.45

Hgb 120-180

Question 6

Chem 7

Answer 6

3-8
135-145. 3.5-5.5
4-6
98-106. 22-26
80-115 (M)
60-100 (F)

Question 7

Extended

Answer 7

1. 05-1.3 0.75-0.95

0. 8-1.5?

Question 8

LFTs

Answer 8

Albumin 35-50
INR 1-2
Glucose 4-11
Bilirubin (conj) 0-7

Question 9

Liver enzymes

Answer 9

ALT 17-63
AST 18-40
GGT 10-48 (M), 10-30 (F)
AlkPhos 38-126

Question 10

D dimer

Answer 10

< 0.5

Question 11

Lactate

Answer 11

1-1.8