Intramuscular injections- drawing back

[minnimouse]

New to site so a big hello to all . My question relates to drawing back when giving intramuscular injections to check you are not in a vessel. I understand the WHO published guidelines that suggested this is no longer necessary and wondered if any one has or knows of research that supports this? Or the theory behind it? I would apprectiate your comments and views :bugeyes:

[MissBrittanyRN]

During OB clinical I had to share a mom/baby couple with another student due to low census. My partner administered the vitamin K shot shortly after birth, and when she aspirated, she drew a signifant amount of blood back, enough that it was very obvious that she was in a vessel, so I personally think that it's good practice, and I have never heard not to do it. I was taught to do z-track and draw back, but I don't have a lot of actual experience.