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50 Cards in this Set
- Front
- Back
Which bore (diameter) of the needle is the smallest? |
23-gauge needle |
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The common needle gauges used for drawing blood with an evacuated system are: |
20, 21, or 22 gauge |
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Through which size needle will blood flow the fastest? |
20 gauge |
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The gauge of the needle indicates the following relationship: the larger the gauge number, the: |
Smaller the diameter of the bore |
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In general, a syringe is used when drawing specimens and or patients except for |
Request for multiple testing, requiring different anticoagulants and multiple tubes |
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Which anticoagulant prevents coagulation of blood by removing calcium through the formation of insoluble calcium salt? |
EDTA, oxalate, and citrate. |
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You are preparing to draw blood for multiple tests in several tubes. The best and most cost- efficient Technique would be: |
Evacuated tube system |
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The anticoagulant heparin is used for blood gases and other chemistry test. It works by: |
Preventing the conversion of prothrombin to thrombin |
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All of the following statements are true EXCEPT |
Gray Stoppered tubes are used for CBC and WBC tests |
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10mL is the same as: |
10cc |
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Blood is needed for routine bleeding and coagulation studies (PT, PTT). Which color tune top is to be used? |
Light blue |
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When Serum is needed for testing, which tube listed should be used? |
Red |
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The anticoagulant preferred for hematology testing is |
EDTA |
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An arterial puncture is more likely to result in a hematoma then a venipuncture is because of: |
Higher pressure in the arteries |
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Which statement is true about arterial puncture's |
collateral circulation should be checked before drawing, heparin is the anticoagulant of choice, and the site must be held at least five minutes after completing a puncture (All of the above) |
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The patient has a negative Allen test. What should you do? |
Perform the Allen test on the other arm |
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The artery that lies on the thumb side of the wrist is the: |
Radial |
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If the blood is drawn too quickly from the vein, the vein will have a tendency to: |
Collapse |
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The bevel of the needle: |
Should always be facing up when inserted into the skin |
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Under which of the following conditions would you avoid a site for venipuncture? |
Edematous arm, arm with IV, and or Hematoma ( all of the above) |
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When drawing blood samples, which of the following should be performed first? |
Identify the patient |
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What is the primary source of information when labeling a patient sample in the hospital |
Wristband and patient verification of name. |
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And arterial puncture site is more likely to bleed because: |
Arteries have higher pressures than veins |
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Venipuncture is usually performed in the antecubital area. Which vein is usually the best to draw from? |
Median cubital |
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The doctor orders a CBC, serum drug level, PT, and a set of blood cultures. What is the order of draw? |
Blood cultures, light blue, red, lavender. |
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What can happen if the tourniquet is left on too long before drawing blood? |
Hemoconcentration |
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Which two arteries are occluded when the Allen test is performed? |
Radial and Ulnar |
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Once an arterial blood sample is obtained, the puncture site should have pressure held for at least: |
5 minutes |
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As a general rule, you should not stick a person more than____ in an attempt to obtain blood? |
Twice |
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Serum is described as icteric in the presence of increased: |
Bilirubin, causing jaundice |
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Serum is described as lipemic in the presence of increased: |
Lipids in a non fasting sample |
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Serum is described as hemolyzed in the presence of increased: |
Hemoglobin from ruptured RBC's |
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Why is the first tube discarded when you are drawing from an indwelling line? |
To remove heparin or saline contamination |
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The purpose of the Allen test is to: |
Check for collateral circulation through the ulnar artery before sampling from the radial artery |
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The following items are minimum requirements for sample labeling: |
The patients complete name, the identification number, date, time of collection, and collectors initials |
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A patient sitting in a chair has fainted. Possible acceptable actions by the phlebotomist include all of the following EXCEPT: |
Leaving the patient unattended (DON'T DO THIS) |
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Which is generally the most common complication from phlebotomy? |
Hematoma |
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A phlebotomist is requested to draw an unconscious patient. The patients name and identification number on the arm band agree with the information on the request form and the computer labels. What else should be done to ensure patient identification? |
Nothing else is necessary |
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A conscious patient does not have an identification armband. The name on the water jug and the room number on the door agree with the information on the request. What should the phlebotomist do? |
Do not draw the patient until an armband has been applied! |
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An unconscious, and unidentified man is admitted to an emergency room trauma center. What would be the system of choice to ensure patient identification? |
Use a three part identification system that utilizes a temporary armband and labels for specimens and blood to be transfused. |
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To fill an evacuated tube with blood from a syringe, the phlebotomist should: |
Use a transfer device by removing the syringe needle after the safety shield has been engaged and then attaching the syringe to the transfer device for filling the evacuated tubes. |
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In what order should a serum (SST) tube, a green tube, light blue tube and a lavender tube be filled from a syringe? |
Light blue, serum, green and lavender |
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You cannot perform a venipuncture successfully after two attempts you should? |
Ask another phlebotomist to try |
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Contains no additive |
Glass red top tube |
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And anticoagulant with a glycolytic inhibitor (prevents glycolysis) |
Gray top tube |
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The anticoagulant that preserves the cell morphology for a differential |
Lavender top tube |
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Contains EDTA |
Lavender top tube |
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Requires 1:9 ratio |
Light blue top tube |
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Contains Heparin |
Green top tube |
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Contains Oxalate |
Gray top tube |