The high-stakes history of the world's most vital transfusion

What happens if you're injected with the wrong blood type? - Bill Schutt · 4:52 · Video: TED-Ed · Watch at the source

In short: Blood transfusions are a cornerstone of modern medicine, but they were once a desperate gamble. This video explores the evolution of the procedure, from 17th-century origins to the life-saving intervention of a brother for his sister.

The video traces the history of blood transfusions, a life-saving procedure that has evolved significantly since the 17th century. It highlights the transition from experimental methods to the standardized medical practice we recognize today.

A pivotal moment in this history occurred in 1881, when Dr. William Halsted performed a direct transfusion to save his sister, Minnie, who was hemorrhaging following childbirth. By inserting a needle into his own arm to transfer his blood to hers, Halsted successfully stabilized her, marking a critical point in the development of the practice.

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