Unit 7.2

Question 1

preferred method of obtaining venipuncture specimens

Answer 1

Evacuated tube method

Question 2

Why is evacuated tube system preferred?

Answer 2

because it is direct, efficient, relatively safe for the patient and the blood drawer, and allows multiple tubes to be easily collected

Question 3

T/F (Morse type):
The vacuum pressure of an evacuated tube may be too great for such veins and cause them to collapse easily. This is often the case with young adults.

Answer 3

TF
2nd statement: elderly patients and newborn infants

Question 4

Enumerate the steps in performing blood collection using ETS

Answer 4

1. Prepare all the materials and equipment for the evacuated tube system.
2. Identify the patient by making the him state his name and birth date.
3. After identifying the patient’s diet restriction and latex sensitivity, explain the procedure then position the patient, apply tourniquet and ask patient to make a fist.
4. Search and select for the prominent vein.
5. After selecting the vein release the tourniquet and ask patient to open fist.
6. Clean the site of collection with 70% isopropyl alcohol in circular, outward motion.
7. Attach the ETS needle to the adapter.
8. Reapply the tourniquet, and ask the patient to make a fist.
9. Uncap the needle, anchor the vein, and insert the needle, bevel up.
10. Push in the tube with the hand that anchored the vein. Fill the first tube until blood flow stops.
11. Remove the tube by applying a push pressure against the flared area of the ETS adapter while pulling the tube diagonally. Perform inversion of tubes when necessary, and insert another tube until the final one.
12. After collecting the blood samples release the tourniquet. Apply cotton above venipuncture site without direct pressure to the needle. Remove the needle.
    13.

Question 5

Enumerate the steps in performing blood collection using ETS

Answer 5

1. Prepare all the materials and equipment for the evacuated tube system.
2. Identify the patient by making the him state his name and birth date.
3. After identifying the patient’s diet restriction and latex sensitivity, explain the procedure then position the patient, apply tourniquet and ask patient to make a fist.
4. Search and select for the prominent vein.
5. After selecting the vein release the tourniquet and ask patient to open fist.
6. Clean the site of collection with 70% isopropyl alcohol in circular, outward motion.
7. Attach the ETS needle to the adapter.
8. Reapply the tourniquet, and ask the patient to make a fist.
9. Uncap the needle, anchor the vein, and insert the needle, bevel up.
10. Push in the tube with the hand that anchored the vein. Fill the first tube until blood flow stops.
11. Remove the tube by applying a push pressure against the flared area of the ETS adapter while pulling the tube diagonally. Perform inversion of tubes when necessary, and insert another tube until the final one.
12. After collecting the blood samples release the tourniquet. Apply cotton above venipuncture site without direct pressure to the needle. Remove the needle.
13. Apply pressure on the venipuncture site covered by the cotton for 3-5 minutes. Secure the needle and dispose into a puncture-proof container.
14. Label the tube with necessary information.
15. Thank the patient. Deliver the specimen to the laboratory sections.

Question 6

How should you uncap the needle?

Answer 6

Pick up the tube holder with your dominant hand, placing your thumb on top near the needle end and fingers underneath.
Uncap and inspect the needle for defects and discard it if flawed.

Question 7

T/F:
Blood will not flow until the needle pierces the tube stopper.

Answer 7

True