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quiz 3 Flashcards

(65 cards)

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1
Q

Which anticoagulant is used for blood gas determinations?

A

Heparin

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2
Q

What color tube should be collected for Stat Serum?

A

Orange

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3
Q

Which of the following tubes should be drawn first?

A

Light blue

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4
Q

Which of the following tubes need to be inverted 8 to 10 times to mix properly after drawing?

A

Lavender (EDTA)

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5
Q

What color vacuum tube should be drawn for toxicology and trace metal analysis?

A

Royal blue

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6
Q

Which of the following is preferred collection site for laboratory testing of a patient at high risk for venous thrombosis?

A

Arterial sample

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7
Q

What is the preferred method of blood collection in newborns and infants?

A

Dermal puncture

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8
Q

Which of the following has higher levels in capillary blood than in venous blood?

A

calcium

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9
Q

Puncture of the bone during dermal puncture can result in what potentially serious and sometimes fatal bone infection?

A

osteomyelitis

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10
Q

What is the maximum acceptable depth for a heel puncture?

A

2 mm

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11
Q

What is the maximum acceptable width for a dermal puncture?

A

0.5 mm

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12
Q

Which of the following is the appropriate site for dermal puncture on an infants foot?

A

Medial and lateral borders of plantar surface

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13
Q

Which of the following tests cannot be collected using a dermal puncture?

A

Blood culture

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14
Q

Which of the following is an appropriate dermal puncture site for adults?

A

Ring finger, perpendicular to the ridges

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15
Q

Which antiseptic may affect the results of tests for bilirubin, uric acid, potassium, and phosphorus from a dermal puncture and therefore should not be used on a dermal puncture?

A

provide- iodine

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16
Q

Betadine may elevate results of which tests if used to clean the skin for dermal puncture

A

Sodium, Potassium, chloride, bicarbonate

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17
Q

Which of the following is an acceptable step during collection of blood by dermal puncture?

A

Wipe away the first drop of blood with a dry, clean guaze pad.

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18
Q

Which screening test measures the overall integrity of primary hemostasis?

A

Bleeding time

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19
Q

Which of the following over the counter medication is known to increase bleeding times?

A

Aspirin

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20
Q

Which of the following would be interpreted as normal bleeding time?

A

6 minutes

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21
Q

What is the usual site for performing a standard bleeding time test?

A

Forearm, just below antecubital crease

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22
Q

Which of the following is a part of proper technique when performing a bleeding time test?

A

Touch the incision with filter paper every 30 seconds to blot blood.

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23
Q

At what intervals should blood be wicked with filter paper when performing a bleeding time test?

A

30 seconds

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24
Q

Drawing excessive amounts of blood from a patient puts them at risk for what type of anemia?

A

Iatrogenic

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25
For which of the following cases would a capillary puncture be contraindicated?
Severely dehydrated patients
26
For which of the following patients would a capillary puncture be preferred?
A patient requiring frequent blood tests
27
The emergency department has requested that blood alcohol level be drawn on a patient. What is the proper way to obtain the specimen?
Clean the site with Betadine ( providone-iodine ) and perform a routine venipuncture.
28
What is the medical term for fainting?
Syncope
29
When you are unable to locate a vein after thoroughly examining a patients arm, what step should be taken next?
Examine the other arm for a vein.
30
A patient has a seizure while you are performing a venipuncture. What should you do?
Remove the tourniquet and needle immediately. apply pressure, and call the nurse.
31
When collecting blood from a vein in the back of the hand, where should the tourniquet be placed?
Above the elbow as usual.
32
Which of the following tests is most seriously affected by hemolysis?
Potassium
33
During a prolonged hospitalization, a patient requiring many laboratory tests may develop what condition as a result of multiple blood samples being drawn?
Hemoconcentration
34
Which of the following may cause a hematoma?
Going through the back side of the vein when inserting the needle
35
Collection for which department require a special patient identification system in addition to the hospital ID bracelet?
Blood bank
36
A large amount of bleeding into the tissues surrounding a puncture site ( i.e., in a patient who takes anticoagulant medication) can cause what condition?
Compartment syndrome
37
What is the term used to describe a vein that is hardened due to repeated venipuncture, chemotherapy, or disease?
sclerosed
38
If an IV is in place and there are no other accessible sites, where should the blood specimen be collected?
Distal to the IV
39
If the antecubital space is inaccessible when venipuncture is required, what is the next best site for specimen collection?
Dorsal hand veins
40
If the bevel is stuck to the wall of the vein, what should be done?
pull back on the needle
41
which of the following veins should be avoided to reduce chances of nerve damage?
Dorsal
42
All of the following are reasons for specimen rejection except for what?
collection from the wrong vein
43
Basal state
Refers to the body state after 8 to 12 hours of fasting .
44
Timed specimens are useful in monitoring..
cardiac enzymes
45
Patient preparation includes verifying patient age on the requisition...
because lab reference ranges maybe set based on age.
46
What is the effect of dehydration on a patients test results?
Diurnal variation and constituent tested.
47
Blood tested from patients who have been in supine positions for an extended period of time may exhibit what type of shift in certain blood test results?
decreased
48
Which of the following is not a preanalytical variable?
Reporting of test results
49
Which antiseptic is not recommended for children under the age of 2?
Tincture of iodine
50
Which blood parameter is a measure of carbon dioxide levels in the blood ?
PCO2
51
What parameter is a measure of the percent of oxygen bound to hemoglobin?
O2 saturation
52
Which test measures the level of bicarbonate in the blood?
HCo3
53
Where is the radial artery located?
Thumb side of the wrist
54
A blood gas sample on ice cannot be used to test for what analyte due to the effect of lower temperature on the sample?
sodium
55
All of the following are possible complications of an arterial puncture except for what?
Petechia
56
After 12 hours of fasting and abstention from strenuous exercise, the body is said to be in what state?
Basal
57
A test requisition lists the glucose specimen to be collected as a 2- hour postprandial. When should it be collected?
Two hours after the patient eats
58
Which test is used to diagnose hypoglycemia?
2 hour pp ( postprandial ) glucose
59
What test is used to diagnose gestational diabetes?
3 hour oral GTT
60
In an oral GTT, how much time may the patient take to drink the glucose solution?
5 minutes
61
Which of the following shows significant diurnal variation?
Cortisol
62
Which of the following is a therapeutic drug that might be measured?
Diantin
63
Which of the following is true about blood donor screening?
It must be performed every time a person donates blood.
64
For which test does a blood sample need to be collected in a prewarmed tube and kept at body temperature until delivered to the laboratory?
Cold agglutinins
65
What happens when a patient with cold agglutinins body temperature falls?
The agglutinins attach too RBCs.

Phlebotomy (1 decks)

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