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It is very uncommon to actually blow a vein. When it does happen, it is because the angle of entry was too shallow and the needle has sheared the vein, causing it to rupture, or because the vaccum on the evacuated tube was too strong and caused an already weak vein to collapse and tear. These problems can be exacerbated if you have engaged the vacutainer before you stick. Always engage your tube after entering the vein. If you think you are blowing veins often, check your angle of entry and anchoring. If you fail to get blood, palpate again (while gloved, of course) to see if you can feel the vein next to or near your needle. Explore alternative problems as well (did you transfix? not enter far enough? not engage the tube properly? etc).

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11y ago

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