Human cardiac catheterization was introduced by Werner Forssman in 1929. Ignoring his department chief, and tying his assistant to an operating table to prevent his interference, he placed a uretheral catheter into a vein in his arm, advanced it to the right atrium [of his heart], and walked upstairs to the x-ray department where he took the confirmatory x-ray film. In 1956, Dr. Forssman was awarded the Nobel Prize.

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