Double checking is generally performed in situations where there is a high risk of error. Common instances include: - Medication Administration: Before administering medication, nurses often double check the dosage, patient identity, and medication itself. - Blood Transfusions: Verifying the blood type and patient details is critical to avoid potentially fatal transfusion reactions. - Critical Procedures: Any procedure that could significantly impact patient health may require a double check. This includes administering anesthesia, inserting central lines, and conducting certain diagnostic tests.