What principle does Corleen's scenario illustrate when she received additional oral pain medication after surgery?

The principle illustrated in Corleen's scenario of receiving additional oral pain medication after surgery is the additive effect. This concept refers to the scenario where two or more drugs with similar effects are taken together, which can lead to an increased overall effect compared to the effects of each drug taken alone. In this case, the additional oral pain medication contributes to the overall pain management strategy, providing better relief than one medication could achieve on its own.

In a post-surgical context, patients often require more than one type of pain relief to effectively manage their pain, particularly if they are transitioning from intravenous to oral medications. The additive effect allows for more comprehensive pain control, helping to enhance patient comfort and facilitate recovery.