ABG Interpretation Exam Questions with CORRECT Answers (Grade A+)
Question 1:
Purpose of Blood Gas
Answer:
To determine acid/base balance status
To determine oxygenation status
Question 2:
Why do we use arterial blood sample rather than venous?
Answer:
Arterial blood sample is more stable from any area of the body:
Good indicator of oxygenation
Good indicator of oxygenation of lungs.
Venous blood gives us different values depending on where it is drawn in the body.
- Venous blood has lower O2 content as it leaves an organ
Question 3:
What is Central Venous Pressure Sampling used for?
Answer:
CVP Sampling
-get blood
-get venous sample
-measure pressures in that part of the heart
Question 4:
What type of catheter is used to collect mixed venous blood?
Answer:
Swan Ganz or CVP catheter
Question 5:
How much of total amount of O2 is dissolved in plasma?
Answer:
1.5 %
Question 6:
How much is O2 is combined?
Answer:
98.5%
Question 7:
What are the hazards of obtaining an ABG?
Answer:
, Spasm of the vessel
Clotting
Bleeding
Hematoma
Permanent nerve damage
All of above can lead to decreased blood flow to tissue leading to ischemia and necrosis
Question 8:
What are the three sites for taking ABGs?
Answer:
Radial
Brachial
Femoral
Question 9:
Of the three ABG sites, which is the preferred?
Answer:
Radial
Question 10:
Which has higher pressure; artery or vein?
Answer:
Artery
Question 11:
What brachial nerve do we want to avoid when doing blood gas?
Answer:
Median nerve
Question 12:
If both arms have good, equal pressure, which arm would we draw from?
Answer:
The non-dominant hand side
Question 13:
If the pulse is really strong on dominant hand and the other hand does not have a strong pulse- where
would we draw?
Answer:
On the strong pulsed dominant hand
Question 1:
Purpose of Blood Gas
Answer:
To determine acid/base balance status
To determine oxygenation status
Question 2:
Why do we use arterial blood sample rather than venous?
Answer:
Arterial blood sample is more stable from any area of the body:
Good indicator of oxygenation
Good indicator of oxygenation of lungs.
Venous blood gives us different values depending on where it is drawn in the body.
- Venous blood has lower O2 content as it leaves an organ
Question 3:
What is Central Venous Pressure Sampling used for?
Answer:
CVP Sampling
-get blood
-get venous sample
-measure pressures in that part of the heart
Question 4:
What type of catheter is used to collect mixed venous blood?
Answer:
Swan Ganz or CVP catheter
Question 5:
How much of total amount of O2 is dissolved in plasma?
Answer:
1.5 %
Question 6:
How much is O2 is combined?
Answer:
98.5%
Question 7:
What are the hazards of obtaining an ABG?
Answer:
, Spasm of the vessel
Clotting
Bleeding
Hematoma
Permanent nerve damage
All of above can lead to decreased blood flow to tissue leading to ischemia and necrosis
Question 8:
What are the three sites for taking ABGs?
Answer:
Radial
Brachial
Femoral
Question 9:
Of the three ABG sites, which is the preferred?
Answer:
Radial
Question 10:
Which has higher pressure; artery or vein?
Answer:
Artery
Question 11:
What brachial nerve do we want to avoid when doing blood gas?
Answer:
Median nerve
Question 12:
If both arms have good, equal pressure, which arm would we draw from?
Answer:
The non-dominant hand side
Question 13:
If the pulse is really strong on dominant hand and the other hand does not have a strong pulse- where
would we draw?
Answer:
On the strong pulsed dominant hand
