Venipuncture and Cannulation: Master Blood Sampling and IV Techniques

Question 1

Which of the following is NOT a reason for performing venipuncture?

Accepted Answer

Measuring blood pressure

Answer

Collecting blood for testing

Answer

Inserting an IV cannula

Answer

Donating blood

Question 2

Which vein is commonly targeted for venipuncture in adults?

Accepted Answer

Median cubital vein

Answer

Cephalic vein

Answer

Basilic vein

Answer

Great saphenous vein

Question 3

What angle should the bevel of the venipuncture needle be?

Accepted Answer

15 degrees

Answer

10 degrees

Answer

30 degrees

Answer

45 degrees

Question 4

What is the primary purpose of heparin during IV cannulation?

Accepted Answer

Preventing blood clots in the cannula

Answer

Enlarging the vein

Answer

Reducing pain

Answer

Preventing infections

Question 5

Which of the following is NOT a reason to avoid IV cannulation?

Accepted Answer

Underweight

Answer

Infection at the insertion site

Answer

Thrombophlebitis

Answer

Latex allergy

Question 6

Select the scenario that represents a contraindication for venipuncture:

Accepted Answer

Performing venipuncture on a patient with cellulitis at the puncture site

Answer

Obtaining a blood sample for routine laboratory tests

Answer

Administering intravenous fluids through a cannula

Answer

Inserting a cannula for blood transfusion

Question 7

What is the optimal angle of needle insertion for cannulation?

Accepted Answer

30-45 degrees

Answer

15-20 degrees

Answer

60-75 degrees

Answer

90 degrees

Question 8

According to best practice guidelines, how frequently should a peripheral intravenous cannula be changed?

Accepted Answer

Every 48 hours

Answer

Every 24 hours

Answer

Every 72 hours

Answer

Every 96 hours

Question 9

What is the primary ethical obligation of the healthcare professional performing a venipuncture or cannulation procedure?

Accepted Answer

Ensuring the patient's safety and well-being throughout the procedure

Answer

Collecting an accurate blood sample or placing the cannula successfully

Answer

Completing the procedure within a specific timeframe

Answer

Guaranteeing the patient's satisfaction with the outcome

Question 10

What is the recommended angle of needle insertion for venipuncture in a median cubital vein?

Accepted Answer

30-45 degrees

Answer

15-20 degrees

Answer

60-75 degrees

Answer

90 degrees

Question 11

What is the purpose of aspirating the cannula before administering fluids?

Accepted Answer

To ensure that the cannula is in a vein

Answer

To flush any air bubbles out of the cannula

Answer

To dilute the fluids being administered

Answer

To prevent backflow of blood into the cannula

Question 12

Which of the following is a sign of extravasation during cannulation?

Accepted Answer

Swelling and pain around the cannula site

Answer

Blood in the urine

Answer

Fever and chills

Answer

Nausea and vomiting

Question 13

Which of the following is an essential step in the preparation of a patient for venipuncture?

Accepted Answer

Cleaning the puncture site with alcohol

Answer

Applying a tourniquet

Answer

Having the patient lie down

Answer

Asking the patient to hold their breath

Question 14

What is the difference between a flash and a blood draw during venipuncture?

Accepted Answer

A flash is when blood enters the syringe immediately after needle insertion, while a blood draw is when the blood is aspirated from the vein.

Answer

A flash is when the needle is inserted into the skin, while a blood draw is when the needle is inserted into the vein.

Answer

A flash is when the needle is removed from the vein, while a blood draw is when the needle is inserted into the vein.

Answer

There is no difference between a flash and a blood draw.

Question 15

To ensure safe and effective venipuncture and cannulation, what are the key principles of patient education and communication?

Accepted Answer

Build rapport, address concerns, and promote informed decision-making.

Accepted Answer

Obtain informed consent by explaining procedures, risks, and benefits.

Accepted Answer

Listen actively to understand, reduce anxiety, and tailor explanations.

Answer

Use technical jargon to show expertise.

Question 16

Which of the following is the most common complication associated with venipuncture?

Accepted Answer

Hematoma

Answer

Nerve damage

Answer

Infection

Answer

Arterial puncture

Question 17

Which of the following is a contraindication to intravenous cannulation?

Accepted Answer

Severe burns on the intended cannulation site

Answer

History of allergy to tape

Answer

Obesity

Answer

Small veins

Question 18

What is the primary purpose of flushing a cannula?

Accepted Answer

To ensure patency, prevent clotting, and remove air bubbles

Answer

To check for leaks

Answer

To administer medication

Question 19

Which of the following is a sign of phlebitis?

Accepted Answer

Pain, redness, and swelling along the vein

Answer

Fever and chills

Answer

Hard or swollen lymph nodes

Answer

Cold, pale skin

Question 20

When selecting a cannula size, which factor should be considered primarily?

Accepted Answer

Patient's vein size

Answer

Patient's age

Answer

Type of solution being infused

Answer

Infusion rate

Question 21

During blood transfusions, what is the primary responsibility of a nurse?

Accepted Answer

To monitor the patient for any adverse reactions and ensure safe administration

Answer

To collect and process the blood

Answer

To determine the patient's blood type

Question 22

Which of the following is NOT a potential complication of cannulation?

Accepted Answer

Embolism

Answer

Infiltration

Answer

Phlebitis

Answer

Extravasation

Question 23

When troubleshooting a non-flowing cannula, the initial step should be to check for:

Accepted Answer

Kinking of the tubing

Answer

Needle damage

Answer

Clotted cannula

Answer

Vein infiltration