Deck 13: Arterial Blood Collection

Question 1

Which test measures the level of bicarbonate in the blood?

A) PCO₂
B) CO₂
C) HCO₃^-
D) H₂CO₃

Answer 1

C

Question 2

Which pH value indicates acidosis?

A) 7.25
B) 7.36
C) 7.40
D) 7.48

Answer 2

A

Question 3

Which blood parameter measures the amount of oxygen in the blood?

A) pH
B) PO₂
C) PCO₂
D) O₂ saturation

Answer 3

B

Question 4

Which blood parameter measures the acidity or alkalinity of the blood?

A) pH
B) PO₂
C) PCO₂
D) O₂ saturation

Question 5

Where is the tourniquet placed for arterial blood gas collection?

A) 2 inches above the puncture site
B) 2 inches below the puncture site
C) Just above the elbow
D) No tourniquet is used.

Question 6

What is the normal pH of blood?

A) 6.80 to 6.90
B) 7.20 to 7.30
C) 7.35 to 7.45
D) 7.55 to 7.65

Question 7

A blood gas specimen that is not iced must be transported to the lab within what time frame?

A) 1 to 3 minutes
B) 5 to10 minutes
C) 15 to 30 minutes
D) 1 hour

Question 8

Which of the following possible complications of arterial puncture can close the artery, thereby preventing oxygen from reaching tissues?

A) Arteriospasm
B) Hematoma
C) Infection
D) Thrombosis

Question 9

Which pH value indicates alkalosis?

A) 7.25
B) 7.33
C) 7.42
D) 7.49

Question 10

What test is most commonly used to assess the collateral circulation of the radial artery?

A) Modified Allen test
B) Modified Brown test
C) Modified Jones test
D) Modified Smith test

Question 11

What parameter is a measure of the percent of oxygen bound to hemoglobin?

A) pH
B) PO₂
C) PCO₂
D) O₂ saturation

Question 12

A blood gas sample on ice cannot be used to test for what analyte due to the effect of lower temperature on the sample?

A) Calcium
B) Glucose
C) Potassium
D) Sodium

Question 13

Which artery has the best collateral circulation?

A) Brachial
B) Femoral
C) Radial
D) Ulnar

Question 14

Where is the radial artery located?

A) In the center of the bend of the elbow
B) Thumb side of the wrist
C) Pinkie finger side of the wrist
D) Inner portion of the thigh

Question 15

Which artery is most commonly used for arterial blood gas collection?

A) Radial
B) Ulnar
C) Brachial
D) Femoral

Question 16

Which blood parameter is a measure of carbon dioxide levels in the blood?

A) pH
B) PO₂
C) PCO₂
D) O₂ saturation

Question 17

Which of the following arterial sampling errors lowers pH values?

A) Too much heparin
B) Too little heparin
C) Air bubbles in syringe
D) Insufficient mixing

Question 18

Which anticoagulant is used for arterial blood gas collections?

A) Citrate
B) EDTA
C) Heparin
D) Oxalate

Question 19

Air bubbles in a blood gas syringe will cause not only an error in the PO₂ value but which other error?

A) Decreased PCO₂
B) Increased PCO₂
C) Decreased pH
D) No other changes

Question 20

Capillary blood gas specimens are collected in heparinized glass pipettes, and they are mixed using a magnet and what other metal device?

A) Bug
B) Flea
C) Insect
D) Mosquito

Question 21

For an arterial puncture, at what angle should the needle be inserted into the skin?

A) 15 to 30 degrees
B) 45 to 60 degrees
C) 60 to 75 degrees
D) 85 to 90 degrees

Question 22

How should an arterial blood gas sample in a syringe be mixed?

A) No mixing is necessary.
B) By rolling between the fingers and thumb
C) With a magnet and a flea
D) By shaking the syringe vigorously

Question 23

What is the minimum amount of time that a phlebotomist should hold pressure on an arterial puncture site?

A) No pressure is needed.
B) 2 minutes
C) 5 minutes
D) 10 minutes