ABG Ranges

Question 1

What is the range for HCO3?

Answer 1

22-26 mEq/L
bicarbonate, metabolic component

Question 2

What is the range for PaCO2?

Answer 2

35-45 mmHG
partial pressure of CO2, respiratory component

Question 3

What is the range for pH?

Answer 3

7.35-7.45

Question 4

What is the range for PaO2?

Answer 4

80-100
partial pressure of O2

Question 5

What is the range for SaO2?

Answer 5

93-98%
Arterial 02 saturation

Question 6

What is the three regulators of acid-base balances?

Answer 6

1. chemical buffers
2. respiratory system
3. renal system

Question 7

Explain the role of chemical buffers in acid-base balances

Answer 7

prevent major changes in pH of body fluids

Question 8

Explain the role of the repiratory system in acid-base balances

Answer 8

eliminate CO2

Question 9

Explain the role of the renal system in acid-base balance

Answer 9

kidneys regulate bicarbonates in ECF. secrete H ions and reabsorbs bicarbonates ions

Question 10

Metabolic Acidosis

Answer 10

low pH(<7.35), low bicarbonate (<22mEq/L)

renal failure

Question 11

Metabolic Alkalosis

Answer 11

high ph (>7.45), high bicarbonate (>26 mEq/L)

Medication, vomiting, gastric suctioning, diuretic

Question 12

Respiratory Acidosis

Answer 12

low pH (<7.35), low PaCO2 (<45mmHg)

Respiratory problems

Question 13

Respiratory Alkalosis

Answer 13

high pH (>7.45), high PaCO2 (>45mmHg)