Advanced Emergency Medical Technician (AEMT) Practice Test

An intramuscular injection is typically given at a?

1. 100 degrees angle

2. 15 degrees angle

3. 90 degrees angle

4. 45 degrees angle

The correct answer is: 90 degrees angle

An intramuscular injection is administered at a 90 degrees angle to ensure that the medication is delivered deep into the muscle tissue. This angle facilitates the appropriate depth for the injection, allowing for better absorption of the medication by the vascular structures that run through the muscle. Administering at 90 degrees ensures that the needle enters the muscle rather than just the subcutaneous tissue, which can occur at shallower angles. This is important for medications that are intended for intramuscular absorption because it allows the medication to be effectively utilized in the body, making it pivotal for administering vaccines and various medications in emergency settings.