The butterfly's precise placement facilitates venipuncture of thin, "rolling", fragile, or otherwise poorly accessible veins. Oct 22, 2025 · Butterfly needles have a very small, thin needle that's stabilized by two flat panels. Sometimes veins roll because the surrounding tissue is not strong enough to hold it in place, and an inexperienced nurse or phlebotomist doesn't know how to anchor the vein properly. We demonstrate 3 venipuncture techniques to find veins easily, draw blood in one go and how to draw blood from rolling veins. Sep 24, 2025 · Issues like small, collapsing, or rolling veins can make your blood draw difficult. & adv. 3 However, this vein is not as large and is also quite prone to rolling. Study with Quizlet and memorize flashcards containing terms like What are two contraindications for self-myofascial techniques? a. Rolling substitutions can be made. Rolling parkland, good conditions underfoot; a nice stroll.

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