Consider Body Weight When Using an Epinephrine Injector
Posted Mar 03 2013 3:29pm
When a person experiences anaphylaxis, a life threatening reaction to foods, bees, latex or other causes, the best course of action is to administer epinephrine quickly and effectively. Typically, this means using an epinephrine auto-injector (like an EpiPen or Auvi-Q ) and injecting into the side of the upper leg.
A recent study conducted in the U.K. found that the injection site may vary depending upon body weight. Using ultrasound to take skin surface to muscle depth measurements, researchers found that higher weight and waist circumference were linked to a skin surface to muscle depth measurement greater than the length of the auto-injector needle. This means the epinephrine was not getting into the muscle where it would be more rapidly absorbed. The study concluded that it may be beneficial to inject further down the leg where skin surface tomuscle depth surpassed the length of the auto-injector needle for a majority of kids.