What is the potential risk when pushing a needle through the rubber stopper of a vial?

The potential risk when pushing a needle through the rubber stopper of a vial is coring. Coring refers to the occurrence of a small piece of the rubber stopper being detached and entering the vial when the needle penetrates the rubber. This is particularly concerning in a sterile environment, as it can lead to contamination of the medication inside the vial. Additionally, coring can result in blockage of the needle, which can complicate the process of drawing medication from the vial.

Understanding coring is essential for pharmacy practice because it directly impacts medication safety and effectiveness. Proper technique when inserting a needle into a vial can help minimize this risk, such as ensuring the needle is at the correct angle and not using excessive force. Thus, awareness of coring and its implications is crucial for maintaining the integrity of medications and ensuring patient safety.