Midterm

Question 1

During the venipuncture procedure, the tourniquet should stay on no longer than

Answer 1

1 minute

Question 2

Which vein is the first choice for venipuncture?

Answer 2

median cubital

Question 3

If you are asked to perform a venipuncture on an inpatient who is not wearing an ID band, you should

Answer 3

ask the patient’s nurse to attach a new ID band before proceeding

Question 4

Small red spots on the skin are referred to as

Answer 4

petechiae

Question 5

An increase in the ratio of formed elements to plasma is called

Answer 5

hemoconcentration

Question 6

Hematomas can be caused by

Answer 6

removing the tourniquet after removing the needle

Question 7

The following can occur if the tourniquet is left on the patient too long:

Answer 7

hemoconcentration

Question 8

Tourniquets should be placed ____ inches above the venipuncture site.

Answer 8

3 to 4 inches

Question 9

When should the tourniquet be removed from the arm in a venipuncture procedure?

Answer 9

before the needle is withdrawn

Question 10

Which information must match on the patient’s ID band and the requisition?

Answer 10

DOB
ID number
patient’s name

Question 11

At what angle should a venipuncture needle penetrate the skin?

Answer 11

15 to 30 degrees

Question 12

Which vein lies close to the brachial artery?

Answer 12

basilic

Question 13

Upon entering a patient’s room, you should first

Answer 13

introduce yourself

Question 14

Which vein is often the only one that can be palpated in an obese patient?

Answer 14

cephalic

Question 15

Which is not a purpose of the requisition?

a. filing insurance claims
b. identifying the patient
c. determining the specimens to be collected
d. allowing the equipment necessary for the collection to be gathered

Answer 15

filing insurance claims

Question 16

Blood collected in light blue-topped tubes is used for which test?

Answer 16

coagulation

Question 17

Blood collected in gray-topped tubes is used for which test?

Answer 17

FBS

Question 18

Blood collection in lavender-topped tubes is used for which test?

Answer 18

CBC

Question 19

Tubes containing the SPS anticoagulant are used for

Answer 19

blood culture analysis

Question 20

Blood collections tubes containing an anticoagulant should be

Answer 20

inverted gently and repeatedly after blood collection

Question 21

Blood banks use a ______ -gauge needle to collect blood from donors for transfusions

Answer 21

16-18

Question 22

The most common gauge used for a routine venipuncture is

Answer 22

21

Question 23

The additive sodium citrate is used in blood collection to test for

Answer 23

prothrombin time

Question 24

The syringe method of draw is useful because

Answer 24

it allows for control of blood flow

it shows the appearance of blood at the hub

Question 25

The smaller the gauge number, the

Answer 25

larger the lumen

Question 26

Tubes with green tops may contain

Answer 26

sodium heparin

Question 27

Tubes with gray tops are used for

Answer 27

glucose tolerance tests

Question 28

EDTA prevents coagulation in blood tubes by

Answer 28

binding calcium

Question 29

Which color-coded tube does not contain any additives?

Answer 29

red, glass tube

Question 30

Complete clotting of a blood sample in a SST (gold or red-gray) tube takes ____ minutes at room temperature.

Answer 30

30 minutes

Question 31

Which of the following indicates the largest-sized needle?

Answer 31

16g

Question 32

Correct order of draw

Answer 32

1) yellow, sterile
2) light blue
3) red, plastic tube
4) gold BD Hemogard Closure/ red-gray (tiger top)
5) green
6) lavender
7) gray

Question 33

Platelets remain in the circulation for

Answer 33

9 to 12 days

Question 34

The main function of leukocytes is to

Answer 34

protect the body against infection

Question 35

An average adult has ____ L of blood.

Answer 35

5 to 6 L

Question 36

Plasma constitutes ____ % of total blood volume.

Answer 36

55%

Question 37

Which color tube may be used to obtain serum for a laboratory test?

Answer 37

Red