Jean-Baptiste Denys

Jean-Baptiste Denys (1643 – 3 October 1704) was a French physician[1] notable for having performed the first fully documented human blood transfusion, a xenotransfusion. He studied in Montpellier and was the personal physician to King Louis XIV.

Jean-Baptiste Denys

Attempts to transfuse blood

Denys administered the first fully documented human blood transfusion on June 15, 1667.[2] He transfused about twelve ounces of sheep blood into a 15-year-old boy, who had been bled with leeches 20 times. The boy survived the transfusion.[1] Denys performed another transfusion into a labourer, who also survived. Both instances were likely due to the small amount of blood that was actually transfused into these people, which allowed them to withstand the allergic reaction.

In the winter of 1667, Denys administered transfusions of calf's blood to Antoine Mauroy, a madman. Mauroy died during the third transfusion.[3] Much controversy surrounded his death. Mauroy's wife asserted Denys was responsible for her husband's death, and Denys was charged with murder. He was acquitted, and Mauroy's wife was accused of causing his death. After the trial, Denys quit the practice of medicine.[4] It was later determined that Mauroy actually died from arsenic poisoning. Denys' experiments with animal blood provoked a heated controversy in France, and in 1670 the procedure was banned. It was not until after Karl Landsteiner's discovery of the four blood groups in 1902 that blood transfusions became safe and reliable. Denys—the man who boldly championed transfusion against all odds—invented styptic, used to stop mild bleeding. Denys died in 1704 at the age of sixty-nine.[5]

Further reading
  • Tucker, Holly (2012). Blood Work: A Tale of Medicine and Murder in the Scientific Revolution. W. W. Norton & Company. ISBN 978-0393342239.
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References
  1. "This Month in Anesthesia History". Archived from the original on 2011-07-20. Retrieved 2009-06-15.
  2. "The First Blood Transfusion?". Heart-valve-surgery.com. 2009-01-03. Retrieved 2010-02-09.
  3. Klein, H.; Anstee, D. (2005). Mollison's Blood Transfusion in Clinical Medicine (11th ed.). Oxford: Blackwell. p. 406. ISBN 0-632-06454-4.
  4. Asimov, Asimov's Biographical Encyclopedia of Science and Technology 2nd Revised edition
  5. Tucker, Holly (2012). Blood Work: A Tale of Medicine and Murder in the Scientific Revolution. W. W. Norton & Company. p. 222. ISBN 978-0393342239.
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