Question 1

Match the most appropriate method of venipuncture with each situation. Some methods of venipuncture may be used more than once or not at all.
-50-year-old female, blood draw ordered for routine yearly physical

Accepted Answer

The evacuated tube system is the most common and appropriate method for a routine blood draw during a yearly physical in an adult. It is efficient, allows for multiple tubes to be filled during one venipuncture, and is generally well-tolerated by patients.

Question 2

Match the most appropriate method of venipuncture with each situation. Some methods of venipuncture may be used more than once or not at all.
-20-year-old healthy male

Accepted Answer

The Evacuated Tube System is most appropriate for a 20-year-old healthy male due to its efficiency and the ability to collect multiple samples quickly, which is suitable for patients with good vein integrity.

Question 3

When considering the veins of the antecubital area for a blood draw, the first vein of choice is the:

Accepted Answer

The median cubital vein is the best anchored and often is the largest vein in the antecubital area.

Question 4

Match the most appropriate method of venipuncture with each situation. Some methods of venipuncture may be used more than once or not at all.
-75-year-old male, excessive bruising in antecubital area from anticoagulant use and repeat blood draws, small hand veins

Accepted Answer

Given the patient's condition of excessive bruising and small hand veins, a Winged Infusion Set (often referred to as a butterfly needle) is the most appropriate choice. This method allows for more precise control and is gentler on fragile veins, which is ideal for elderly patients or those with difficult venous access.

Question 5

A mass of blood caused by damage to a blood vessel is called:

Accepted Answer

Hematoma formation is the result of blood leaking from the vein during or immediately after the blood draw.

Question 6

Which of these terms usually describes an inappropriate blood specimen?

Accepted Answer

If a blood specimen is grossly hemolyzed, it is inappropriate for many laboratory testing procedures.

Question 7

Many automated CLIA-waived tests utilizing point-of-care testing require capillary blood samples for testing.

Accepted Answer

Capillary blood is acceptable for many of the CLIA-waived testing procedures; some of them may also be performed using whole blood collected via venipuncture.

Question 8

Match the most appropriate method of venipuncture with each situation. Some methods of venipuncture may be used more than once or not at all.
-9-year-old male, dehydrated from several days of vomiting

Accepted Answer

For a 9-year-old male who is dehydrated from several days of vomiting, a winged infusion set (often referred to as a "butterfly needle") is most appropriate. This method is ideal for pediatric patients or when veins are difficult to access, as it allows for more precise control and is less intimidating for the child.

Question 9

One way to avoid negative outcomes when drawing blood may be:

Accepted Answer

Anchoring of the vein is essential to keeping it from moving out of the way with needle insertion.

Question 10

A butterfly system may be preferred to a blood draw in this situation:

Accepted Answer

A butterfly (winged infusion set) may be preferable for a blood draw from the back of the hand or for drawing blood from a small child because of the smaller needle diameter and length and increased flexibility of the device.

Question 11

When blood enters the heart from the systemic circulation, which chamber does it enter first?

Accepted Answer

Blood follows a specific route as it passes through the heart. The first chamber encountered is the right atrium.

Question 12

Tubes that contain thixotropic gel to separate plasma from cells are ____tubes.

Accepted Answer

PST stands for plasma separator tube.

Question 13

Which of these tubes should be drawn last when performing a blood draw using the evacuated tube system?

Accepted Answer

The order of draw must be followed to avoid contamination with unwanted anticoagulants and potential erroneous chemistry results.

Question 14

A peripheral blood smear may be utilized in this way:

Accepted Answer

Blood smears may be utilized in several ways, but the most common reason for them to be set up is to identify the types and percentages of the various types of white cells.

Question 15

Heparin is present as an anticoagulant in which tube?

Accepted Answer

Each tube type (differentiated by the color of the tube top) is unique as to the additive present in the tube. Heparin is in the green-top tubes as an anticoagulant.

Question 16

Match the most appropriate method of venipuncture with each situation. Some methods of venipuncture may be used more than once or not at all.
-3-year-old healthy male

Accepted Answer

For a 3-year-old healthy male, a winged infusion set (often referred to as a "butterfly needle") is most appropriate due to the smaller vein size and the need for a gentler approach to minimize discomfort and movement.

Question 17

Which type of specimen may appear cloudy after centrifugation and is unacceptable for many chemistry testing procedures?

Accepted Answer

Lipemic specimens have excess fat floating in the specimen. The presence of these molecules make the specimen unacceptable for many chemistry testing procedures.

Question 18

Sodium citrate is present as an anticoagulant in which tube?

Accepted Answer

Each tube type (differentiated by the color of the tube top) is unique as to the additive present in the tube. The light blue-top tubes include sodium citrate.

Question 19

Which of these structures is not part of the cardiovascular system?

Accepted Answer

Alveoli are located in the lungs; they are not part of the cardiovascular system.

Question 20

Which of these is a good practice when drawing blood from a child?

Accepted Answer

Dealing with children may be challenging, and every effort should be made to communicate effectively with the child and his or her parent to help with the process. Showing the needle to the child in many situations will increase the anxiety of the patient.

Quiz 8: Collection and Processing of Blood Samples

Match the most appropriate method of venipuncture with each situation. Some methods of venipuncture may be used more than once or not at all. -50-year-old female, blood draw ordered for routine yearly physical

Match the most appropriate method of venipuncture with each situation. Some methods of venipuncture may be used more than once or not at all. -20-year-old healthy male