What impact did blood banks have on medical practices?

Blood banks significantly enhanced the safety of blood transfusions, making them a vital advancement in medical practice. Prior to the establishment of blood banks, blood transfusions were often risky due to the high chance of transfusion reactions and infections, as blood could be mismatched or contaminated. The advent of blood banks allowed for the collection, testing, and storage of blood, which ensured that blood could be matched more accurately to patients' needs. This improved safety lowered the incidence of complications associated with transfusions, therefore improving patient outcomes.

The process of typing, cross-matching, and screening for infections in a controlled environment created a much safer system for receiving blood. As a result, blood banks not only encouraged the increased use of transfusions when needed but also built public trust in the practice. Enhanced safety through well-regulated blood banks became a cornerstone of modern medicine, directly contributing to successful surgeries, trauma care, and various treatments requiring blood products.