The hospital Pharmacy and Therapeutics Committee determines that Drug X and Drug Y are equally effective, but Drug X is preferred due to cost. What is this an example of if a patient is admitted to the hospital on Drug Y and switched to Drug X?

The scenario described is an example of a "therapeutic interchange."
Therapeutic interchange refers to the substitution or exchange of one medication with another medication that is considered therapeutically equivalent for a specific indication. In this case, the patient initially received Drug Y but was subsequently switched to Drug X based on the decision of the Pharmacy and Therapeutics Committee. The committee determined that both drugs are equally effective, but Drug X is preferred due to its lower cost. Therefore, the decision to switch the patient from Drug Y to Drug X is an example of therapeutic interchange.