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Questions and Answers
What is the main purpose of a tourniquet in phlebotomy?
What is the main purpose of a tourniquet in phlebotomy?
- To identify an artery
- To restrict arterial blood flow
- To locate a vein
- To restrict venous blood flow (correct)
Where is the tourniquet applied in phlebotomy?
Where is the tourniquet applied in phlebotomy?
- Above the Antecubital fossa (correct)
- Below the elbow
- At the Antecubital fossa
- On the wrist
What is the most common site for venipuncture?
What is the most common site for venipuncture?
- Wrist
- Arm
- Hand
- Antecubital fossa (correct)
How long should a tourniquet be left on?
How long should a tourniquet be left on?
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When should the tourniquet be removed?
When should the tourniquet be removed?
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What three things are done together in tourniquet tying?
What three things are done together in tourniquet tying?
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Why should the tourniquet be tied smoothly and easily?
Why should the tourniquet be tied smoothly and easily?
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What is the purpose of the Basilic vein in the Antecubital fossa?
What is the purpose of the Basilic vein in the Antecubital fossa?
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Study Notes
Tourniquet Tying in Phlebotomy
- A tourniquet is a constrictive band used to restrict venous blood flow, not arterial blood flow, during phlebotomy procedures to facilitate vein identification.
Purpose of Tourniquet
- Used to restrict venous blood flow, making it easier to identify a vein.
- Also used in life-threatening blood loss situations to restrict both arterial and venous blood flow.
Venipuncture
- Venipuncture is the most common method of blood collection.
- The most common site for venipuncture is the Antecubital fossa (inner forearm, inner side of the elbow).
Veins of Interest
- Three veins of interest in the Antecubital fossa are:
- Cephalic (closer to the top of the Antecubital fossa)
- Basilic (closer to the belly of the patient)
- Median Cubital (middle vein)
Applying the Tourniquet
- The tourniquet is applied approximately 2 inches above the elbow (or above the Antecubital fossa).
- Should not be left on for more than 1-2 minutes.
Tourniquet Tying and Removal
- Tourniquet tying is done in conjunction with palpating the site and clenching the patient's fist.
- The tourniquet must be removed once a potential site has been identified.
- Tying should be smooth, easy, and without jerky movements.
- Easy removal is essential to prevent accidentally pulling out the needle from the vein.
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Description
Learn about the use of tourniquets in phlebotomy procedures, including restricting venous blood flow and identifying veins. Also, discover their role in life-threatening blood loss situations.
