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Conway Judge's avatar

Aspiration was taught to me as an army medic. We used to vaccinate all the incoming recruits and officer cadets and I did that role for a number of years giving at least a thousand vaccines all up. I recall at least three times aspirating blood. So it isn't common, 0.3% chance as a guess. But it does happen that you can and do end up in a vein sometimes. Because nobodies blood vessels are exactly the same and in the same place.

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C Hess's avatar

As an old RN (USA) I am very confused by all this controversy around aspiration...we were taught to aspirate every single time we gave an intramuscular injection; it was not optional. Has this changed?

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