Blood Gas Assessment Ch. 5

Question 1

Normal value for pH (arterial)

Answer 1

7.35-7.45

Question 2

Normal value for PaCO2 (arterial)

Answer 2

35-45

Question 3

Normal value for HCO3- (arterial)

Answer 3

22-26

Question 4

Normal value for PaO2 (arterial)

Answer 4

80-100

Question 5

Normal pH (venous)

Answer 5

7.30-7.40

Question 6

Normal PaCO2 (venous)

Answer 6

42-48

Question 7

Normal HCO3-(venous)

Answer 7

24-30

Question 8

Normal PaO2 (venous)

Answer 8

35-45

Question 9

Common causes of Metabolic Acidosis

Answer 9

-Lactic acidosis (most common)
-Ketoacidosis
-Salicylate intoxication (aspirin overdose)
- renal failure
- chronic diarrhea

Question 10

Common causes of Metabolic Alkalosis

Answer 10

Hypokalemia
Hypochloremia
Gastic suctioning
Vomiting
Exccessive admin of corticosteroids
Excessive admin of sodium bicarbonate
Diueretic therapy
Hypovolemia

Question 11

Another term for Acute alveolar hyperventilation

Answer 11

Acute respiratory alkalosis

Question 12

Another term for Acute ventilatory failure

Answer 12

Acute respiratory acidosis

Question 13

Another name for chronic ventilatory failure

Answer 13

Compensated respiratory acidosis

Question 14

Acute alveolar hyperventilation superimposed on chronic ventilatory failure

Answer 14

Acute respiratory alkalosis on compensated respiratory acidosis

Question 15

Another word for Acute ventilatory failure superimposed on chronic ventilatory failure

Answer 15

Acute respiratory acidosis on compensated respiratory acidosis

Question 16

Acute =

Answer 16

Uncompensated

Question 17

Chronic =

Answer 17

Compensated

Question 18

Lactic acidosis develops from

Answer 18

• inadequate tissue oxygenation
• anaerobic metabolism

Question 19

During acute alveolar hyperventilation what is decreased?

Answer 19

HCO3- decreases
PaCO2 decreases