The dorsogluteal site for IM injections is the one nurses have the most experience using, as this is what is traditionally taught in nursing schools and covered in nursing textbooks. 16-18 A recent study found that acute care nurses in Canada preferentially selected the dorsogluteal IM injection site over the ventrogluteal IM injection site. 19 The majority of respondents cited their own level of comfort as the predominant reason for this preference. However, nurses who were older than 30 years, were diploma prepared, and had more than 4 years of nursing experience were more likely to choose the dorsogluteal site; whereas nurses who were age 20 to 24 years, were degree prepared, and had 1 to 4 years of nursing experience were more like to choose the ventrogluteal site. 19 This finding supports the idea that the ventrogluteal site may be used more often by those who received specific guidance in administering at that site.
The deltoid site
The ease of access, especially in an outpatient setting, possibly adds to the frequency with which the deltoid site is used for IM injections. This site is used for immunisations/non-irritating medications, hence vaccines which are usually small in volume tend to be administered into the deltoid site. 9 This is a relatively small area and muscle mass, especially in atrophied patients compounded by the close proximity of the radial nerve, brachial artery and bony processes to this site means that more substantial injuries can occur.