A medical assistant needs to collect four tubes during a blood draw. Which of the following tubes should be filled last?
Yellow
Light blue
Red
Gray
The Correct Answer is D
A. Yellow: The yellow tube, used for blood cultures, is typically collected first to prevent contamination.
B. Light blue: The light blue tube is used for coagulation studies and should be collected before tubes containing additives that could interfere with coagulation tests.
C. Red: The red tube, which may contain no additives or a clot activator, is usually collected after the light blue tube.
D. Gray: The gray tube is used for glucose testing and should be filled last as it contains additives that could interfere with other tests if collected earlier.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Peripheral artery disease: While peripheral artery disease affects blood circulation, it is not typically an indication for an EKG.
B. Anemia: Anemia is a condition involving low red blood cells and is not a direct indication for an EKG.
C. Diaphoresis: Diaphoresis (excessive sweating) alone is not a specific indication for an EKG.
D. Arrhythmia: An EKG is used to diagnose and monitor arrhythmias (irregular heartbeats) and other heart-related conditions.
Correct Answer is C
Explanation
A. Apply ice to the wound: Ice can help with swelling but is not the first-line treatment for controlling bleeding.
B. Lower the affected leg: Elevating the leg is usually recommended, not lowering it, to help control bleeding.
C. Press down firmly over a pressure point: Applying firm pressure to a pressure point can help control hemorrhage by reducing blood flow to the area.
D. Cauterize the wound from the edges to center: Cauterization is not typically a first response in an emergency setting; it is usually performed in a controlled medical environment.
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