Aerterial Collection

Question 1

Comp of arterial blood

Answer 1

• rich in oxygen/electrolytes

- used for ABGs, ammonia, and lactic acid

Question 2

ABG tests

Answer 2

• measures concentrations of oxygen, CO2, and pH

- measures gas exchange ability of lungs and buffering capacity of blood

Question 3

PO2

Answer 3

partial pressure of oxygen, absolute amount of oxygen

Question 4

PCO2

Answer 4

partial pressure of carbon dioxide, absolute amount of co2

Question 5

Lower PO2 and higher PCO2 means what?

Answer 5

impaired gas exchange in lungs

Question 6

High pH mean what?

Answer 6

alkalosis

Question 7

Low pH means what?

Answer 7

acidosis

Question 8

Normal pH range

Answer 8

7.35-7.45

Question 9

Normal PO2 rangee

Answer 9

80-100 mmHg

Question 10

Normal PCO2 range

Answer 10

34-45 mmHg

Question 11

Normal O2 saturation

Answer 11

97%-100%

Question 12

Normal Bicarbonate

Answer 12

22-26 MEq/L

Question 13

Why are arterial needles heparinized?

Answer 13

to prevent coagulation

Question 14

Brachial/radial artery needle size

Answer 14

1 inch

Question 15

Femoral artery needle size

Answer 15

1 1/2 inch

Question 16

What antiseptics are used for arterial punctures?

Answer 16

alcohol and povidone iodine

Question 17

Collateral circulation

Answer 17

collection site receives blood from more than one artery

Question 18

Modified Allen Test

Answer 18

-tests for collateral circulation
1.extend wrist, make fist
2.compress ulnar and radial arteries
3.open and close first repeatedly
4.release ulnar, observe palm color
5.negative-no palm color appears
positive-color appears in 5-10 seconds

Question 19

Capillary gas testing

Answer 19

• CBG alternative to ABG
• mix of capillary, venule,arteriole blood, and tissue fluid
• pediatric heel stick
• warm site 40 C-42 C for 5-10 minutes
• collected in heparinized glass pipet, insert metal filling called a flea
• fill tube and seal both ends

Question 20

Embolism

Answer 20

vessel blockage, air bubble, or artery clot