Which of the following is an approved site for IO catheter placement?

The proximal humerus is recognized as an approved site for intraosseous (IO) catheter placement because it offers direct access to the humeral shaft, which is surrounded by a rich vascular network. This anatomical location allows for effective administration of fluids and medications in situations where intravenous access is challenging or impossible, such as in emergency situations with trauma or critical illness.

The proximal humerus is also beneficial due to its anatomical safety, positioning, and ease of access compared to other potential sites. Proper technique in identifying the landmarks and insertion angle enhances the likelihood of successful placement and minimizes the risk of complications.

In contrast, the chest wall, lower abdomen, and forearm are not standard sites for IO catheter placement. The chest wall may have complications related to proximity to vital organs and structures, while the lower abdomen and forearm do not provide the same level of vascular access or anatomical security that the proximal humerus does for IO infusion. Understanding the optimal sites for IO placement is essential for practitioners, particularly in acute care settings.