Venipuncture Safety and Equipment

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What type of patients would benefit from using the Open System/ Syringe System?

Patients with a history of blood clotting disorders
Patients with a high risk of bleeding
Patients with large or easy-to-access veins
Patients with small or difficult veins (correct)

What is the purpose of the plastic extensions ('wings') on the Winged Infusion Set (Butterfly)?

To provide a comfortable grip for the healthcare professional
To increase the length of the needle
To increase the gauge of the needle
To allow for easier manipulation for shallow angle of needle insertion (correct)

What is the primary advantage of using a Combination System for blood collection?

It combines the blood collection tube and collection apparatus into a single unit (correct)
It eliminates the need for safety devices
It provides a separate tube for each additive
It allows for simultaneous collection of serum and plasma samples

What is the purpose of a clot activator in a blood collection tube?

To accelerate the clotting of the blood (B) Signup and view all the answers

What type of sample is produced when a blood collection tube contains an anticoagulant?

Plasma sample (B) Signup and view all the answers

What is the purpose of safety devices in blood collection systems?

To prevent accidental needlesticks (A) Signup and view all the answers

What is the primary purpose of following the order of draw in phlebotomy?

To prevent unnecessary carry-over or cross-contamination of additives (D) Signup and view all the answers

Which tube should be drawn first if a blood culture is ordered?

Blood culture bottle or tube (yellow or yellow-black top) (A) Signup and view all the answers

What is the purpose of drawing a non-additive tube first in some situations?

To prevent contamination by tissue fluids or thromboplastins (A) Signup and view all the answers

What is contained in an SST tube?

A gel separator and clot activator (D) Signup and view all the answers

Which of the following tubes has a lavender top?

EDTA (A) Signup and view all the answers

What is the correct order of draw for additive tubes?

SST, Sodium heparin, PST, EDTA, ACDA or ACDB, Oxalate/fluoride (A) Signup and view all the answers

What is the primary purpose of categorizing collection tubes according to the blood test that will be performed?

To prevent errors in mix-ups (C) Signup and view all the answers

What type of device is used to draw blood from a skin puncture, such as on the heels or fingers?

Microtainer (A) Signup and view all the answers

What is the purpose of a vacuum or negative pressure in a closed system of blood extraction?

To allow for a measured amount of blood to flow easily (B) Signup and view all the answers

What is indicated by a blue tip on a microcapillary tube?

The tube is plain or has no additive (A) Signup and view all the answers

When is it appropriate to use microcollection tubes?

When drawing blood from a patient with difficult veins (A) Signup and view all the answers

What type of safety feature is commonly used to prevent needlestick injuries?

All of the above (D) Signup and view all the answers

What is the additive in a Purple/Lavender color coded tube?

EDTA (C) Signup and view all the answers

Which of the following tests is NOT typically performed using a Gold (Serum Separator tube)?

Blood Typing (Rh Factor & ABO Screening) (A) Signup and view all the answers

What is the Blood:Anticoagulant ratio in a Light Blue tube?

9:1 (B) Signup and view all the answers

Which additive is used in a Red tube?

Clot Activator (B) Signup and view all the answers

What is the primary use of a Dark Green tube?

Blood Coagulation tests (B) Signup and view all the answers

Why is the order of draw important when collecting multiple blood samples?

To avoid inserting needles every time a blood sample is needed for a different test (C) Signup and view all the answers

What is the effect of EDTA on the laboratory determination of calcium ions?

It chelates calcium, decreasing the concentration of calcium in the sample (A) Signup and view all the answers

What is the significance of precision in laboratory results?

It refers to the consistency of the results (D) Signup and view all the answers

Why are most reagents more compatible with serum than plasma?

Because the optimum reaction of the reagent with the substance in the blood is important for reliable results (B) Signup and view all the answers

What is the significance of reliability in laboratory results?

It means the results can be depended on (D) Signup and view all the answers

According to research, what is true about serum and plasma in terms of stability?

Serum is more stable than plasma for certain substances, such as creatinine and potassium (A) Signup and view all the answers

What is the role of laboratory results in the diagnosis of a patient?

They are used, along with the patient's history and other diagnostic results, to make a conclusive diagnosis (D) Signup and view all the answers