Werner Forssmann, a physician, risked his own life to show that cardiac catheterization could work. He cut a hole in his arm and inserted a catheter into a vein, not knowing if the catheter might pierce a vein. He was later awarded the Nobel Prize in Medicine.
The first person to perform a cardiac catheterization was not allowed to perform the procedure on a patient, so he decided to perform it on himself and then walk all the way to the X-ray room with the catheter still in his arm to prove that the tube had reached his heart.
The first man to perform cardiac catheterization, did it on himself then walked downstairs to the radiology department to take the x-ray to prove you would not die. He was fired, became a Nazi, then won the Nobel Prize.
The first human cardiac catheterization was done by Werner Forssmann who, after failing to get permission from his department chief, anesthetized his arm, inserted a catheter into his vein and threaded it into his heart. He then walked down to the X-ray department and took a picture to prove it. “He ignored his department chief and persuaded a nurse in charge of the sterile supplies to assist him. She agreed, but only on the promise that he would do it on her rather than on himself. However, Forssmann tricked her by restraining her to the operating table and pretending to locally anaesthetise and cut her arm whilst actually doing it on himself.“
For a period of thirty years a man weighed everything he ate and drank, as well as all of his waste, in order to study metabolism.
René Laennec invented the stethoscope because he was unable to hear a patient’s heart due to their “great degree of fatness“.
Doctor Ignaz Semmelweis discovered that by washing his hands between delivering babies cut the mortality rate of infection from 35% to less than 1%. His ideas were rejected by the medical community and upset other doctors so much they put him in a insane asylum. He was beaten to death 14 days later.