IM injection ?

Here's a good site for you. Hope this helps!

Large-volume IM injections: 
A review of best practices - ONA

Here's one more!

chet_wilson_drugguides_1|Medication Administration Techniques|Injections

Unless you're giving the injection in the dorso-gluteal muscle, there are no major blood vessels and aspiration is not necessary. Further, if you DO aspirate, it should be done over 10 seconds, which most nurses don't do, so aren't even doing it correctly anyway.

I've given thousands of IM injections, & they do bleed ocassionally; it's not indicative of a problem. I've never seen them after to know if they bruised. This excerpt is from a vaccine site that may give you peace of mind:

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[TD]Do you need to aspirate before giving a vaccination?[/TD]

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[TD]No. ACIP does not recommend aspiration when administering vaccines because no data exist to justify the need for this practice. There are data that show that aspiration is more painful for the vaccine recipient. IM injections are not given in areas where large vessels are present. Given the size of the needle and the angle at which you inject the vaccine, it is difficult to cannulate a vessel without rupturing it and even more difficult to actually deliver the vaccine intravenously. We are aware of no reports of a vaccine being administered intravenously and causing harm in the absence of aspiration.[/TD]

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