
ROUTINE VENIPUNCTURE PROCEDURE
MATERIALS
1. Safety Needles, 22g or less
2. Butterfly needles. 21g or less
3. Syringes
4. Blood Collection Tubes. The vacuum tubes are designed
to draw a predetermined volume of blood.
Tubes with different additives
are used for collecting blood specimens for specific types of tests.
The
color of the rubber stopper is used to identify these additives.
See
Selecting the Appropriate Collection Tube and
Specimen Container Types for more information
5. Tourniquets. Latex-free tourniquets are available
6. Antiseptic. Individually packaged 70% isopropyl
alcohol wipes.
7. 2x2 Gauze or cotton balls.
8. Sharps Disposal Container. An OSHA acceptable,
puncture proof container marked "Biohazardous".
9. Bandages or tape
SAFETY
1. Observe universal (standard) safety precautions.
Observe all applicable isolation procedures.
2. PPE's will be worn at all time.
3. Wash hands in warm, running water with the chlorhexidine
gluconate hand washing product (approved
by the Infection Control Committee),
or if not visibly contaminated with a commercial foaming
hand wash product before and after
each patient collection.
4. Gloves are to be worn during all phlebotomies, and changed
between patient collections.
Palpation of phlebotomy site may be performed without gloves
providing the skin
is not broken.
5. A lab coat or gown must be worn during blood collection
procedures.
6. Needles and hubs are single use and are disposed of in an
appropriate 'sharps' container as one unit.
Needles are never recapped,
removed, broken, or bent after phlebotomy procedure.
7. Gloves are to be discarded in the appropriate container
immediately after the phlebotomy procedure.
All other items used for the
procedure must be disposed of according to proper biohazardous
waste disposal policy.
8. Contaminated surfaces must be cleaned with freshly prepared
10% bleach solution. All surfaces
are cleaned daily with bleach.
9. In the case of an accidental needlestick, immediately wash the area
with an antibacterial soap, express blood
from the wound, and contact your
supervisor.
PROCEDURE
1. Identify the patient.
Outpatients are called into the phlebotomy area and asked their name and date of
birth. This information must
match the requisition. Inpatients are identified by their arm
band.
If it has been removed, a nurse must
install a new one before the patient can be drawn.
2. Reassure the patient that the minimum amount of blood required for testing will be drawn.
3. Assemble the necessary equipment
appropriate to the patient's physical characteristics.
4. Wash hands and put on gloves.
5. Position the patient with the arm extended to form a
straight-line form shoulder to wrist.
6. Do not attempt a venipuncture more
than twice. Notify your supervisor or patient's physician if
unsuccessful.
7. Select the appropriate vein for venipuncture.
The
larger median cubital, basilic and cephalic veins are most frequently used, but
other may be necessary
and will become more prominent if the
patient closes his fist tightly. At no time may LSS personnel
perform venipuncture on an
artery. At no time will blood be drawn from the feet.
Factors to consider in site
selection:
* Extensive
scarring or healed burn areas should be avoided
* Specimens
should not be obtained from the arm on the same side as a mastectomy.
* Avoid areas of hematoma.
* If an IV is
in place, samples may be obtained below but NEVER above the IV site.
* Do not
obtain specimens from an arm having a cannula, fistula, or vascular graft.
* Allow
10-15
minutes after a transfusion is completed before obtaining a blood sample.
8. Apply the tourniquet 3-4 inches above the collection
site.
Never leave the tourniquet on for
over 1 minute.
If a tourniquet is used for preliminary vein selection, release
it and reapply after two
minutes.
9. Clean the puncture site by making a smooth circular pass
over the site with the 70% alcohol pad,
moving in an
outward spiral from the zone of penetration. Allow the skin to dry before
proceeding.
Do not touch the puncture site after cleaning.
10. Perform the venipuncture
A. Attach the
appropriate needle to the hub by removing the plastic cap over the small end of
the
needle and inserting into the hub, twisting it tight.
B. Remove plastic
cap over needle and hold bevel up.
C. Pull the skin
tight with your thumb or index finger just below the puncture site.
D. Holding
the needle in line with the vein, use a quick,
small thrust to penetrate the skin and
enter the vein in one
smooth motion.
E. Holding the
hub securely, insert the first vacutainer tube following proper order of draw
into
the large end of the hub penetrating the stopper. Blood should flow into
the evacuated tube.
F. After blood
starts to flow, release the tourniquet and ask the patient to open his or her
hand.
G. When blood flow stops,
remove the tube by holding the hub securely and pulling the tube off
the needle. If multiple tubes are needed, the proper order of draw to
avoid cross
contamination and erroneous results is as follows:
1.
Blood culture vials or bottles, sterile (yellow top) tubes
2. Coagulation tube (light blue top)
3. Serum tube with or without clot activator or silica gel (Red or Gold)
4. Heparin tube (Green top)
5. EDTA (Lavender top)
6. Glycolytic inhibitor (Gray top)
H. Each tube
containing an additive should be gently inverted 5-8 times after
being removed from
the hub. DO NOT SHAKE OR MIX VIGOROUSLY.
I. Place a gauze
pad over the puncture site and remove the needle.
Immediately apply
slight pressure. Ask the patient to apply pressure
for at least 2 minutes.
When bleeding stops, apply a fresh bandage, gauze
or tape.
J. Properly
dispose of hub with needle attached into a sharps container. Label all tubes
with
patient labels, initials, date and time.
11. Venipuncture procedure using a
syringe:
A. Place a sheathed
needle or butterfly on the syringe.
B. Remove the cap and
turn the bevel up.
C. Pull the
skin tight with your thumb or index finger just below the puncture site.
D. Holding the needle in line with the vein,
use a quick,
small thrust to penetrate the skin and
vein in one motion.
E. Draw the
desired amount of blood by pulling back slowly on the syringe stopper.
F. Release the
tourniquet.
G. Place a gauze
pad over the puncture site and quickly remove the needle.
Immediately apply pressure. Ask the patient to apply pressure to the gauze
for at least 2 minutes.
When bleeding stops, apply a fresh bandage, gauze
or tape.
H. Transfer blood
drawn into the appropriate tubes as soon as possible using a needleless BD
Vacutainer Blood Transfer Device, as a delay could cause
improper coagulation.
Gently invert tubes containing an additive 5-8 times.
I. Dispose of the
syringe and needle as a unit into an appropriate sharps container.
12. Blood Culture Collection
A. Obtain the
collection kit from Microbiology:
1. Adult: One aerobic, one anaerobic bottle to be taken from single site and
med-prep kit
2. Infants: One BacT/Alert Pedi-Bact bottle
3. Keep bottles away from light
B. Proper skin
disinfecting is essential to reduce contamination. Using universal
precautions:
1. Following palpation, cleanse the skin.
2. Concentrically clean the site with chloraprep (chlorhexidine gluconate 2% and
isopropyl
alcohol 70%) all in one step.
3. Allowing the disinfectant to dry provides maximum effectiveness of the
disinfectant.
4. Should further palpation be necessary, disinfect the gloved finger.
C. Blood culture
bottles must be kept at room temperature before being inoculated.
Remove the plastic flip top from the blood culture bottle(s) and disinfect with
70%
isopropanol.
D. Obtain the
required volume of blood, but do not overfill.
1. Adults = 10 ml of blood for each bottle
2. Infants = up to 1-4 ml of blood
E. Specimens may be
drawn using the Blood Collection Adapter System (Direct Draw)
or by needle or syringe.
F. Do not vent
the bottles
13. Infant/Child Phlebotomy
A. Confirm the
patient's identification
B. Secure patient
to Papoose apparatus for stabilization if child is unable to sit upright
on their own.
C. Assemble the
required supplies
D. Select the
collection site and proceed as routine phlebotomy. If the child is old
enough,
collect blood as in an adult. Otherwise, call Neonatal Lab for consult,
686-7650, ext 1218.
UAMS CLINICAL LABORATORY BLOOD DRAW MINIMIZATION
1.
Increasing the number of point of care glucose and electrolyte testing
devices which use a
fingerstick sample to perform test instead of drawing a whole tube of
blood to send to the lab.
2.
Doing a thorough search in our LIS to see if blood can be used from an
earlier draw whenever
there is an add-on test requested to prevent patient from being drawn again.
3. The Clinical Lab coordinated an intradisciplinary committee to reduce
mislabeled and unlabeled
specimens to prevent patient redraws . The lab audits and sends out
notification for corrective
action in cases of non-compliance.
4. Designing our LIS system to identify minimum volumes of blood to be
drawn for all tests and
print out the appropriate number of labels to match the different types of
blood tubes to be drawn.
5. Purchasing testing equipment in the nursery laboratory which uses a
lesser volume of blood than
previous equipment.
6. Participating in Nursery quality control meetings weekly which address
methods of improvement
for reducing the volume of blood collection.
7. Participating in the IRB to have a voice in encouraging research
studies to be conservative in blood
collection.
8. Communicating with nurse managers and staff education to improve blood
draw techniques to
minimize hemolyzed, clotted and
unsatisfactory specimens to prevent redraws.
9. Assuring the competence and accuracy of our phlebotomists by prompt
communications when
specimen collection problems occur and providing solutions and corrective
action when needed.
10. Saving blood specimens in the proper environment for the maximum usage
time span to increase
opportunities for not having to redraw a specimen.
TROUBLESHOOTING HINTS FOR BLOOD COLLECTION
If a blood sample is not attainable:
REFERENCES
NCCLS: Procedure for the Collection of Diagnostic Blood Specimens by
Venipuncture; Approved
Standard, Fifth Edition, Vol 23, No 32 (H3-A5), 2003
Microbiology Procedure Manual V: BactiAlert.doc
Neonatal Procedures: SpecColProc2003.doc
Nursing Procedure Manual. Lippincott Online with addenda, 2004.
OSHA Safety and Health Bulletin SHIB 03-10-15: Disposal of
Contaminated Needles and Blood
Tube Holders Used for Phlebotomy.
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