Blood Gas DSA

Question 1

If you decrease HCO3, what happens to pH?

Answer 1

decreases

Question 2

If you increase CO2 in blood, what happens to pHa?

Answer 2

decreases = acidosis

Question 3

If you want to look at blood gases, what type of blood do you sample?

Answer 3

arterial blood

bc this is what the tissue is getting

Question 4

What is normal pHa?

Answer 4

7.40

Question 5

if you increase HCO3, what happens to pH?

Answer 5

increases

Question 6

What do you call anything that alters the amount of CO2 in blood?

Answer 6

a respiratory disturbance

Question 7

What is acidosis?

Answer 7

pHa < 7.35

Question 8

What is normal PaCO2?

Answer 8

40 mmHg

Question 9

What is normal arterial HCO3?

Answer 9

24 mEq/L

Question 10

What can change HCO3?

What are these changes called?

Answer 10

kidneys
GI tract
ingest too much
use it up by making acid (lactic acid, ketoacids, etc)

metabolic disturbances

Question 11

What is the normal range for PaO2?

Answer 11

80-100 mm Hg

Question 12

What are the 4 components of a blood gas test?

Answer 12

PaO2 (arterial oxygen)
PaCO2 (arterial carbon dioxide)
Arterial pH (pHa)
HCO3 (arterial bicarbonate)

Question 13

What is alkalosis?

Answer 13

pHa > 7.45