Phlebotomy Practice Test

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Question 1
Which of the following may still occur during arterial puncture even when using good technique and proper procedure?
A
thrombus formation
B
extreme pain
C
hematoma
D
arteriospasm
Question 1 Explanation: 
Because arteriospasms are a reflex, they may not be avoidable, especially with anxious patients. The other three conditions should avoidable using proper procedure.
Question 2
A hydrogen breath test can be used to detect which of the following conditions?
A
glucose metabolism disorders
B
H. Pylori infections
C
PKU
D
lactose intolerance
Question 2 Explanation: 
Hydrogen breath tests detect hydrogen gas released by bacteria in the intestines that ferment lactose. High hydrogen gas levels in the breath indicate lactose intolerance.
Question 3
The "lubb" or first sound of the heartbeat is caused by:
A
the closing of the semilunar valves
B
the contraction of the ventricles
C
the contraction of the atria
D
the closing of the AV valves
Question 3 Explanation: 
The first sound of the heartbeat, "lubb," is caused by the closing of the AV valves.
Question 4
To mix an additive tube, you should:
A
centrifuge
B
invert 3-8 times
C
invert 8-10 times
D
shake gently
Question 4 Explanation: 
Additive microtubes should be mixed by inverting 8-10 times, depending on the manufacturer's instructions.
Question 5
This blood bank test is used to check for unsuspected antibodies and antigens in the recipient's and donor's blood that could cause severe reactions during transfusion:
A
Compatibility testing
B
Antibody screen
C
Type and crossmatch
D
Type and Rh
Question 5 Explanation: 
Compatibility testing is used to check for unsuspected antibodies and antigens in the recipient's and donor's blood that could cause severe reactions during transfusion.
Question 6
Major functions of this organ include glycogen storage, secretion of bile, and detoxification of harmful substances:
A
spleen
B
gall bladder
C
pancreas
D
liver
Question 6 Explanation: 
The liver's main functions include glycogen storage, protein catabolism, detoxification of harmful substances, and bile secretion.
Question 7
When reviewing a requisition all of the following must be performed EXCEPT:
A
check that required information is present and complete
B
verifying the patient's social security number
C
verify the date, time, and test to be collected
D
ensure special circumstances are met before performing test
Question 7 Explanation: 
A through review of a test requisition involves: checking for all required information; verifying time, date, and test to be collected; identifying any special circumstances; and determining the collection status and test priority.
Question 8
Loss of consciousness resulting from insufficient blood flow to the brain is known as:
A
infarction
B
syncope
C
trauma
D
nausea
Question 8 Explanation: 
Syncope is the clinical term for fainting. It involves loss of consciousness due to insufficient blood flow to the brain.
Question 9
If sufficient blood does not appear at first from a capillary puncture site on a finger, what should be done?
A
gentle pressure should be applied proximal to the site
B
the patient should hold up his/her arm
C
the patient should clench his/her hand
D
the finger should be firmly squeezed several times
Question 9 Explanation: 
To stimulate blood flow, the site should be positioned downward and gentle pressure should be applied proximal to the site. The area should not be pressed too hard or squeezed repetitively. That could cause hemolysis or tissue fluid contamination.
Question 10
The most important part of collecting a specimen for a test is
A
proper phlebotomy technique
B
courtesy to the patient
C
state-of-the-art equipment
D
patient identification
Question 10 Explanation: 
The most important step in collecting a sample is patient identification. Being courteous to the patient and using good phlebotomy technique are also very important but not the most important.
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