ABGs

Question 1

What is a VBG?

Answer 1

Question 2

Where is an ABG taken from?

Answer 2

Taken from an artery

Question 3

Why is an ABG important?

Answer 3

Real time reflection of patient’s current physiological state

Question 4

ABGs are taken from arteries that have ____ supply.

eg. Radial, femoral and dorsals ____
MUST DO _____ test for radial artery before collection.

Answer 4

collateral
pedis
Allen’s

Question 5

Indications to do the test based on clinical picture/history…

Answer 5

Question 6

Low PAO2 =

Answer 6

Hypoxia

Question 7

High O2 =

Answer 7

> 100mmHg suspect patient is on supplementary oxygen

Question 8

Normal O2 =

Answer 8

> 75 mmHg

Question 9

PaCO2 normal range =

Answer 9

35 - 45mmHg

Question 10

PaCO2 >45mmHg =

Answer 10

Hypercarbia
CO2 retention

Question 11

PaCO2 <35mmHg =

Answer 11

Hyperventilation
CO2 being blown off

Question 12

Cause?

Answer 12

Question 13

Cause?

Answer 13

Question 14

Answer 14

Type 1 respiratory failure
Hypoxia

Question 15

Answer 15

Hypercarbia

Question 16

Answer 16

Type 2 respiratory failure
Hypercarbia
Hypoxia

Question 17

How is pH regulated?

Answer 17

Question 18

How is acid/base metabolism regulated by the body?

Answer 18

Question 19

How are the kidneys involved in regulation?

Answer 19

Question 20

How is the respiratory centre involved in regulation?

Answer 20

Question 21

What is the buffer system?

Answer 21

Question 22

What is ROME wasn’t built in a day?

Answer 22

Question 23

Base excess
normal range = -2 to +2

> +2 =

Answer 23

Question 24

Base excess
normal range = -2 to +2

> -2 =

Answer 24

Question 25

What is an anion gap?

Answer 25

AG = anions - cations
AG = (Na+ + K+) - (Cl- + HCO3-)

Question 26

Normal range for anion gap =

Answer 26

16 - 20mmol/l

Question 27

Causes of HAGMA:

Answer 27

Question 28

Causes of NAGMA:

Answer 28