What is a common factor that may lead to transfusion-transmitted infections?

A common factor that may lead to transfusion-transmitted infections is inadequate sterilization. Blood products must undergo rigorous sterilization processes to eliminate any pathogens that could cause infections. If these processes are not adequately performed, there is a significant risk of transmitting viruses, bacteria, or other infectious agents to the recipient during a blood transfusion.

Inadequate sterilization directly compromises the safety of blood products, making it possible for infectious agents present in the blood supply to enter the recipient's bloodstream. This is why strict procedures and guidelines are crucial in the handling and processing of blood products to ensure that they are safe for transfusions.

The other options, while relevant to blood transfusion safety, do not specifically pertain to transmitting infections in the same direct manner as sterilization. High blood pressure and improper blood matching can affect the success and safety of a transfusion, but they do not inherently relate to the presence of infectious agents. Delay in blood processing may cause logistical issues but similarly does not directly lead to transmission of infections.