When a unit of red cells is delivered while a patient is absent, what should be done first?

When a unit of red blood cells is delivered and the patient is absent, the most appropriate action is to return the unit to the transfusion laboratory right away. This is essential for several reasons.

Firstly, blood products, including red blood cells, must be stored correctly to maintain their viability and safety. The transfusion laboratory is equipped to handle these products under controlled conditions, ensuring that they remain within the appropriate temperature range and are not exposed to conditions that could compromise their integrity.

Secondly, there are strict regulations and protocols regarding the handling and storage of blood products to prevent risks such as bacterial contamination or hemolysis. Keeping the unit in an accessible area, placing it in the fridge, or waiting for the patient to return would not comply with best practices and could potentially endanger patient safety. By returning the unit immediately, the healthcare provider ensures that it is managed correctly and is available for the patient when necessary.