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Big Nay Medical School👩🏾‍⚕️🩺 > Venipuncture > Flashcards

Venipuncture Flashcards

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USMLE® Step 1 flashcards
1
Q

Out of the following tubes, green, light blue,lavender, or red are routinely used for hematology testing?

A

Lavender

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2
Q

Which type of tube should be used to collect blood specimens during a blood glucose tolerance test?

A

Grey

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3
Q

No anticoagulants are found in which of the following tubes?

A

Red

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4
Q

What anticoagulant prevents platelets from clumping and preserves the appearance of blood for microscopic prep?

A

EDTA

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5
Q

The slant at the open end of the needle used for venipuncture is called?

A

The bevel

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6
Q

What needle size is most commonly used for venipuncture?

A

20

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7
Q

What about the most commonly used needle at a blood bank?

A

16

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8
Q

The needle size most commonly used in infants and elederly?

A

23

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9
Q

Tourniquet should be tied on arm no longer than?

A

1 minute

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10
Q

Without a clot activator blood clots within what time frame?

A

15 to 16 minutes

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11
Q

You are required to collect a blood sample for a cbc, which tube would you collect?

A

Lavender

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12
Q

The laboratory requisition indicated you are to collect venous blood specimen for testing serum chemistry testing and coagulation studies, what is the proper order of collection for these tubes?

A

Light blue, red, lavender

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13
Q

So a syringe is preferred over a vacutainer collection when?

A

Fragile veins

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14
Q

Leaving a tourniquet on an arm over the recommended time can cause?

A

Hemoconcentration

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15
Q

Before a routine venipuncture or capillary puncture what do you clean the site with?

A

Isopropyl alcohol

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16
Q

In a routine venipuncture what angle should the needle enter the arm?

A

15 degree

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17
Q

Winged infusion set is also known as?

A

Butterfly needle

18
Q

Why should a tourniquet not be tied too tightly?

A

Impeades arterial blood flow

19
Q

A needlestick is most likely to occur if the phlebotomist does what?

A

Attempts to recap a needle

20
Q

A hematoma can be caused by?

A

All the the above

21
Q

Blood obtained via capillary puncture can be obtained in?

A

All of the above

22
Q

The device used for a dermal puncture is?

A

Lancet

23
Q

Most common site for adults are ?

A

antecubital

24
Q

The proper venipuncture tube for collection of a serum specimen(select all that apply)?

A

Red and grey

25
Q

What is the correct method for performing a capillary puncture?

A

Wipe away the first drop of blood then collect the sample

26
Q

Which is the proper technique for performing a venipuncture?

A

Bevel is up,needle goes in at a 15 degree angle

27
Q

The liquid portion of whole blood that contains clotting factors?

A

Plasma

28
Q

Which of the following cleansing agents may be used at the venipuncture site to remove infection causing bacteria?

A

All of the above

29
Q

If samples for more than one tube must be drawn, which order listed below follows the clisi standards?

A

Yellow, red, green

30
Q

What is the major cause of specimen rejection?

A

hemolysis

31
Q

Which of the following collection containers are used to treat neonates for certain metabolic disorders?

A

Guthrie cards

32
Q

In adults and children which finger is most likely used?

A

Ring finger

33
Q

The vacutainer tube with a marble gray top uses particles to enhance clotting,in a thyrotropic gel to assist in serum and blood cells.

A

True

34
Q

The smaller gauge number the larger the lumen of the needle.

A

True

35
Q

The smaller gauge of the venipuncture needle the less likely it is of hemolysis blood cells will occur.

A

True

36
Q

If your patient faints while having blood draw they must remain in the facility for 15 mins and should not drive for at least 30 mins.

A

True

37
Q

If you’re drawing blood on a elderly patient with a history of collapsed veins you should collect with a syringe.

A

True

38
Q

If a patient complains of tingling and numbness during a venipuncture you should continue to draw.

A

False

39
Q

If blood is flowing into the vacutainer to slowly you should withdraw the needle slightly.

A

True

40
Q

All vacutainer tubes should be inverted 3 to 5 times to mix the blood sample additive.

A

False

Big Nay Medical School👩🏾‍⚕️🩺 (10 decks)

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