SPECIMEN COLLECTION Flashcards
heel puncture should be ____ deep?
less than or equal to 2mm
Substitute specimen for Arterial Blood gas?
Capillary Blood
Blood that is affected by metabolic activity of the tissue it drains and varies by collection site?
Venous Blood
Antiseptic used for collection of blood cultures, blood alcohol specimens, or when the patient is sensitive to alcohol?
Povidone-iodine
Sources of Blood specimen:
Capillaries
Arteries
veins
Which artery is the second choice for an arterial puncture due to the risk of nerve injury?
a) Radial artery
b) Brachial artery
c) Femoral artery
d) Ulnar artery
b) Brachial artery
What is the purpose of ice water during an arterial puncture?
a) To clean the site
b) To sterilize the equipment
c) To numb the puncture area
d) To increase blood flow
c) To numb the puncture area
During a femoral puncture, the needle should be inserted at what angle?
a) 15-30 degrees
b) 30-60 degrees
c) 45-75 degrees
d) 60-90 degrees
d) 60-90 degrees
What is the main use of 0.05 mL of heparin/mL of blood during arterial puncture?
a) Blood coagulation
b) Blood gas analysis
c) Serum testing
d) Complete blood count
b) Blood gas analysis
the test wherein Pressure is applied over the
ulnar and the radial arteries so as to
occlude both of them.
Modified Allen’s Test
True or False:
Puncture should not be more than 2mm depth
because vessels of infants are usually at 1.6mm deep.
true
site for skin puncture in heel?
Lateral Plantar surface of the heel
What gauge of the syringe should be use if collecting of blood from the scalp or small vein?
25 Gauge
Ratio of Edta and Blood
1.5 mg: dL of blood
Best anticoagulant, it also exist in the body as a natural anticoagulant and best in preventing hemolysis
Heparin Anticoagulant
Commercial name of EDTA K2 and K3
Versine (Na) and Sequestrene
Which tube contains thrombin as a procoagulant, allowing clotting within 5 minutes?
A. Lavender
B. Yellow/gray (orange)
C. Blue
D. Red (glass)
B. Yellow/gray (orange)
Which anticoagulant is used to preserve blood for prothrombin time (PT) and activated partial thromboplastin time (APTT) tests?
A. EDTA
B. Sodium citrate
C. Heparin
D. Oxalate
B. Sodium citrate
Which tube is often used for lead testing and contains K2 EDTA?
A. Pink stopper
B. Tan stopper
C. Blue stopper
D. Green stopper
B. Tan stopper
What is the ratio of anticoagulant to blood in a sodium citrate tube used for coagulation testing?
A. 1:1
B. 1:4
C. 1:9
D. 1:10
C. 1:9
What is a common disadvantage of using EDTA in platelet counting?
A. Platelet adhesion
B. Platelet satellitism
C. Hemolysis
D. Clot formation
B. Platelet satellitism
hich tube contains sodium polyanethol sulfonate (SPS) and is used for blood cultures?
A. Yellow stopper
B. Green stopper
C. Lavender stopper
D. Gray stopper
A. Yellow stopper
Removal of Fibril in the blood
DEFIBRINATION
What converts fibrinogen to fibrin?
Thrombin (Factor 2a)
