Upon noticing a mismatch between the medication label and the MAR, what should not be done?

Administering the medication when there is a mismatch between the medication label and the Medication Administration Record (MAR) is not appropriate behavior. When discrepancies arise, the first priority must always be patient safety. Administering a medication that does not match what is documented could result in serious consequences, such as administering an incorrect dosage, a medication that was not intended for the patient, or potentially harmful side effects.

In such situations, it is crucial to perform a thorough investigation of the discrepancy to understand the cause, which includes checking with additional documentation and contacting the medical provider for clarification. These steps ensure that the right medication is given to the patient, thus maintaining safe medication practices.