NHA Phlebotomy Certification Practice Exam

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Prepare for the NHA Phlebotomy Certification Exam. Learn with study guides and multiple choice questions. Each question offers detailed explanations. Achieve success on your certification test.

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What is the primary purpose of using a tourniquet during venipuncture?

To reduce blood flow
To increase visibility and palpation of veins
To ensure sterile technique
To prepare the site for antisepsis

The correct answer is: To increase visibility and palpation of veins

The primary purpose of using a tourniquet during venipuncture is to increase visibility and palpation of veins. When a tourniquet is applied, it temporarily occludes venous blood flow, causing the veins to fill with blood and become more prominent. This engorgement makes it easier for the phlebotomist to locate and access a suitable vein for blood draw. This technique enhances the ability to both see and feel the veins, which is essential for successful venipuncture. By making veins more visible and easier to palpate, the tourniquet helps minimize the number of attempts needed to draw blood, thereby reducing discomfort for the patient and improving procedural efficiency.