Analytical errors and Routine venipuncture Flashcards
(25 cards)
What are during collection analytical errors?
Extended tourniquet time
Hemolysis
Wrong order of draw
Failure to invert tubes
Faulty technique
Under filling tubes
What are before collection analytical errors?
Patient misidentification
Improper time of collection
Wrong tube
Inadequate fast
Exercise
Patient posture
Poor coordination with other treatments
Improper site preparation
Medication interference
What are after collection analytical errors?
Failure to separate serum from cell
Improper use of serum separator
Processing delays
Exposure to light
Improper storage conditions
Rimming clots
What is the first step before starting a venipuncture procedure?
Verify the requisition for the test.
How should you properly identify the patient?
Ask them to state their name and check their ID number.
What should you do after identifying the patient?
Introduce yourself, explain the procedure, and obtain consent.
How do you locate a suitable vein for venipuncture?
Palpate the antecubital fossa with your index finger.
When should you gather your necessary supplies?
After identifying the vein and before washing your hands.
What are the next steps after gathering supplies?
Wash hands and put on gloves.
How and where do you apply the tourniquet?
Tie it 3–4 inches above the site; ask patient to make a fist or pump their hand.
How do you clean the venipuncture site?
Clean in a circular motion from the center outward, after locating the straightest vein.
What should you do while the alcohol dries?
Assemble the needle and holder, uncap and inspect the needle.
How do you anchor the vein before insertion?
Place four fingers under forearm and use thumb to pull skin taut below puncture site.
What is the correct needle insertion angle?
15 to 30 degrees, bevel up.
What do you do once the needle is in the vein?
Insert the tube into the holder to puncture the tube stopper.
When should you release the tourniquet?
After blood begins to flow; never leave it on more than one minute.
What should be done after the last tube is filled?
Remove the tube and place gauze over the site before withdrawing the needle.
What information should be on the specimen label?
Patient’s name, ID number, date/time of collection, and your initials.
What should you do with the labeled tubes?
Place them in a biohazard transport bag.
What should you check before leaving the patient?
Make sure the site has stopped bleeding; apply more pressure if needed (up to 8 minutes call for help).
When is it appropriate to apply a bandage?
After bleeding stops; instruct the patient to remove it within one hour.
What should you do before leaving the room?
Clean up, dispose of waste, and place the call light within reach.
What is the final step after venipuncture?
Remove gloves, wash hands, say goodbye, and tell patient their physician will share the results.
Summarize the key steps of a routine venipuncture procedure?
1.Verify test requisition and identify the patient.
2.Introduce yourself, explain the procedure, and obtain consent.
3.Palpate for a suitable vein and gather all supplies.
4.Wash hands and put on gloves.
5.Apply the tourniquet and prepare the puncture site.
6.Assemble and inspect the needle.
7.Anchor the vein, insert the needle (bevel up, 15–30°), and collect the sample.
8.Release the tourniquet after blood flow begins and follow the correct order of draw.
9.Remove the final tube, then the needle, and apply gauze with pressure.
10.Dispose of the needle in a sharps container.
11.Label all specimens correctly and place them in a biohazard bag.
12.Check the site for bleeding, apply a bandage, and give patient instructions.
13.Clean up, remove gloves, wash hands, and inform the patient that results will be shared by their physician.
