ABG

Question 1

Normal range of pH

Answer 1

7.35 - 7.45

Question 2

Normal range of PaCO2

Answer 2

4.7 - 6.4 kPa

Question 3

Normal range of BE

Answer 3

-2 to 2

Question 4

Normal range of PaO2

Answer 4

10 - 13.5 kPa

Question 5

Normal PaO2

Answer 5

Normoxaemia

Question 6

Low PaO2

Answer 6

Hypoxaemia

Question 7

High PaO2

Answer 7

Hyperoxaemia

Question 8

pH: low
PaCO2: high
BE: normal

Answer 8

Uncompensated respiratory acidosis

Question 9

pH: high
PaCO2: low
BE: normal

Answer 9

Uncompensated respiratory alkalosis

Question 10

pH: low
PaCO2: normal
BE: low

Answer 10

Uncompensated metabolic acidosis

Question 11

pH: high
PaCO2: normal
BE: high

Answer 11

Uncompensated metabolic alkalosis

Question 12

pH: low
PaCO2: high
BE: low

Answer 12

Uncompensated mixed acidosis

Question 13

pH: high
PaCO2: low
BE: high

Answer 13

Uncompensated mixed alkalosis

Question 14

pH: low
PaCO2: high
BE: high

Answer 14

Partially compensated respiratory acidosis

Question 15

pH: high
PaCO2: high
BE: high

Answer 15

Partially compensated metabolic alkalosis

Question 16

pH: low
PaCO2: low
BE: low

Answer 16

Partially compensated metabolic acidosis

Question 17

pH: high
PaCO2: low
BE: low

Answer 17

Partially compensated respiratory alkalosis

Question 18

pH: normal
PaCO2: low
BE: low

Answer 18

Fully compensated respiratory alkalosis/ metabolic acidosis

Question 19

pH: normal
PaCO2: high
BE: high

Answer 19

Fully compensated respiratory acidosis/ metabolic alkalosis

Question 20

pH: normal
PaCO2: normal
BE: normal

Answer 20

Normal ABG

Question 21

Sorensen’s equation

Answer 21

pH = -log10[H+]

Question 22

Arterial vs Venous blood pH

Answer 22

Arterial pH = 7.4
Venous pH = 7.36
Using Sorenson’s equation we can calculate there is a 10% increase in [H+] between arterial blood to venous blood.