Chapter 9

Question 1

A solid mass derived from blood constituents that occludes a blood vessel is a

Answer 1

Thrombus

Question 2

If the tourniquet is applied to the arm for longer than 2 minutes, this analyte will most likely become falsely elevated

Answer 2

Potassium

Question 3

When blood is to be collected for a glucose tolerance test, the patient should fast for

Answer 3

8-12 hours

Question 4

A basal state exists

Answer 4

In the early morning, 12 hours after the last ingestion of food

Question 5

Analyte that is significantly increased in the blood with changes in position

Answer 5

Iron

Question 6

An abnormal accumulation of fluid in the intercellular spaces of the body that is localized or diffused is referred to as

Answer 6

Edema

Question 7

Laboratory test results affected most if the patient is not fasting

Answer 7

Triglycerides

Question 8

Diurnal rhythm has a major effect on this blood analyte

Answer 8

ACTH

Question 9

Another term for fainting

Answer 9

Syncope

Question 10

When the phlebotomist collected blood from the patient, the patient was in supine position, meaning the patient was

Answer 10

Lying

Question 11

Upon entering Ms. newhouse’s hospital room, the phlebotomist introduced herself and explained she was going to collect blood for laboratory tests requested by the physician. The patient becomes very anxious and said she was frightened of needles; emotional stress could lead to a decrease in:

Answer 11

Serum iron levels

Question 12

This has been shown to erroneously affect laboratory test results, leading to falsely elevated results

Answer 12

Violent crying

Question 13

Swelling in the area around a venipuncture site usually leads to

Answer 13

Hematoma formation

Question 14

This should stop the health care worker from collecting blood from a patients arm vein

Answer 14

Mastectomy on the same side

Question 15

This would most likely not be an explanation for turbid serum

Answer 15

Elevated glucose

Question 16

When hemoglobin is released from RBCs and serum becomes tinged as pink or red, this condition is referred to as

Answer 16

Hemolysis

Question 17

A decrease in the plasma volume occurring with an increased concentration of cells and larger molecules such as cholesterol is referred to as

Answer 17

Hemoconcentration

Question 18

This occurs as a result of inflammation and disease of the interstitial compartments

Answer 18

Sclerosed veins

Question 19

If a patient begins to have a seizure during a venipuncture, the phlebotomist should immediately

Answer 19

Release the tourniquet

Question 20

When a patient is on IV therapy and the venipuncture must occur in the arm with the IV line,

Answer 20

The nurse should shut off the IV for 2 minutes prior to the venipuncture

Question 21

Hemolysis in collected blood can cause a falsely decreased value for

Answer 21

Hemoglobin

Question 22

Analyte that will be falsely increased when a sodium citrate blood collection tube is under filled

Answer 22

PT

Question 23

The clinical laboratory departments that usually use serum separator tubes for many of their blood collections

Answer 23

Clinical chemistry

Question 24

The EDTA blood collection tube must not be under filled, since it has been shown to lead to

Answer 24

Low hematocrit levels

Question 25

Additive that destroys the enzymes in the blood when the gray-topped tube is used to collect blood

Answer 25

Sodium fluoride

Question 26

The laboratory test results that are affected most of the patient is NOT fasting

Answer 26

Glucose

Question 27

Basal state is approximately 16 hours after the last ingestion of food.

Answer 27

False

Question 28

The required fasting time for the fasting glucose blood collection is 8 to 12 hours

Answer 28

True

Question 29

A healthy body mass index for adults is 20 to 25 kg/m2

Answer 29

True

Question 30

A thrombus can occlude arteries, but not veins.

Answer 30

False

Question 31

A transient increase in serum iron levels can occur due to emotional stress.

Answer 31

False

Question 32

Diurnal rhythms are the same as circadian rhythms.

Answer 32

True

Question 33

Blood aldosterone levels are not affected by posture changes immediately before blood collection, but glucose levels are greatly affected by posture changes

Answer 33

False

Question 34

An abnormal accumulation of fluid in the intercellular space is hemolysis

Answer 34

False

Question 35

Tylenol taken by a patient can cause the patient to have abnormal laboratory liver panel results

Answer 35

True

Question 36

If the patient pumps his or her fist prior to blood collection, this action can lead to a falsely increased plasma phosphate concentrations.

Answer 36

True

Question 37

Plasma cholesterol will be falsely _________ if the tourniquet pressure is too tight or prolonged

Answer 37

Elevated

Question 38

When RVCs are lysed, hemoglobin is released and this results in ________

Answer 38

Hemolysis

Question 39

Hemolysis plasma that is used to measure the BC count will cause the RBC count to be falsely ________

Answer 39

Decreased

Question 40

Hemolysis May be the result of physiological abnormalities such as __________ Disease

Answer 40

Sickle cell

Question 41

Blood collected for a patients lithium level can not be collected in a green-topped tube containing _________ heparin

Answer 41

Lithium

Question 42

Antibody screens and cross matching of blood run on blood from serum separator tubes will lead to false _______ test results

Answer 42

Positive

Question 43

Veins _______ when blood is withdrawn too quickly or forcefully during venipuncture

Answer 43

Collapse

Question 44

Syncope is another term for _______

Answer 44

Fainting

Question 45

Venipuncture should never be performed on the ______ side as that of a mastectomy

Answer 45

Same