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Steroids injection: is it necessary to pull the plunger to confirm if hit the vein?
In steroids injection, one is to gently pull the plunger of the syringe before injection to confirm that it is possible to insert the needle into the vein. If in the process of gently pulling, found that the needle inhaled red blood, it means that the needle hit the vein, and direct injection will be risky, and needs to replace …
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