ABG pg. 112

Question 1

What is the purpose of getting an ABG?

Answer 1

It is measurement of respiratory (ventilation) and metabolic (renal) acid/base and electrolyte homeostasis. Also measures the adequacy of oxygenation

Question 2

What are 6 things you will gt from an ABG?

Answer 2

1. pH
2. Pco2
3. HCO3(bicarbonate)
4. Po2
5. O2 saturation
6. O2 content

Question 3

What is pH inversely related to?

Answer 3

hydrogen concentration. As hydrogen goes up, pH goes down(more acidic)

Question 4

What is the measurement of Pco2?

Answer 4

It measures the ventilation capability of the pt

Question 5

What is Pco2 referred to as?

Answer 5

The respiratory component in acid/base determination

Question 6

What does pH do as co2 rises?

Answer 6

pH will go down (more acidic)

Question 7

Most of the co2 content in blood is?

Answer 7

most in the blood is HCO3

Question 8

the bicarbonate ion is a measure of?

Answer 8

metabolic (renal/kidney) component of acid/base equilibrium

Question 9

What does pO2 measure?

Answer 9

measures the oxygen content of arterial blood

Question 10

O2 saturtion is a measure of _________ o2 saturtion

Answer 10

hemoglobin

Question 11

When the Po2 levels fall below 60mmHg what happens?

Answer 11

A small decrease in Po2 will cause large decreases in the % of hemoglobin saturated c o2

Question 12

a saturation of <70% what happens at the tissue level?

Answer 12

They are unable to extract enough O2 to carry out normal function. So a Po2 beow 70% is very dangerous, <60% just the slightest decrease in Po2 will cause a large drop in hemoglobin saturation (Oxygen-hemoglobin dissociation curve)

Question 13

Normal range for pH?

Answer 13

7.35-7.45

Question 14

Normal range for Pco2?

Answer 14

35-45 mm Hg

Question 15

Normal ranges for HCO3?

Answer 15

21-28 mEq/L

Question 16

Normal range for P02?

Answer 16

80-100 mm Hg

Question 17

Normal range for O2 saturation?

Answer 17

95%-100%