The piOna auto-injector warms the oil to make it less viscous and then uses a syringe fitted with a 22-gauge (1.5-inch) needle to inject the progesterone deep into the muscle.

Proper technique minimizes the risk of injury. Intramuscular (IM) injection is an important means of administering medication. Sound knowledge of the anatomy of the area to be injected is essential.

The Texas law allowing school nurses to give epinephrine uses the phrase "auto-injectors" when referring to delivering the drug to students who have a prescription for it. That means only the pen ...

An additional 20 patients (74%) presented much later (Fatunde & Familusi, 2001). In fact, gluteal IM injection that led to sciatic nerve injury most often presented as paralytic drop foot (Mayer ...