What is the maximum amount of solution that can be administered in the vastus lateralis for an IM injection?

The vastus lateralis muscle, located on the outer part of the thigh, is commonly used for intramuscular (IM) injections, especially in infants and young children. One reason that 5 ml is the maximum amount of solution that can be administered in this muscle is due to its capacity to accommodate a larger volume without compromising local muscle integrity or causing adverse effects.

Administering more than 5 ml can potentially lead to pain, tissue damage, and increased risk of complications, such as abscess formation or nerve injury. Therefore, when performing IM injections in the vastus lateralis, care must be taken to adhere to this volume limit to ensure patient safety and comfort. It is essential for practical nurses and other healthcare professionals to be aware of these guidelines, as they are crucial for maintaining injection site health and patient well-being.