There are many medical reasons that can cause black stools that are tarry with a foul smell, but sometimes dark stools are caused by eating certain foods or taking iron supplements. However, black stools can also be a result of bleeding, and the darker color indicates that the blood could be coming from a point in the upper gastrointestinal tract.
Gertrude Levandowski survived a 96-hour procedure at a Chicago hospital to remove a giant ovarian cyst; the longest surgery. The second longest surgery ever was 40 hours long and that was to remove 6 limbs from a 8 limed baby in India. But the most common longest surgery is spinal cord surgery it is a 14 hour surgery.
1893 - First successful heart surgery performed, Provident Hospital, Chicago. The surgery repaired the pericardium, the sac around the heart. Many do not consider this to be the first successful heart surgery because the heart itself was not operated on. 1895 - First X-ray performed, in Germany. 1896 - First successful heart surgery performed, in Germany. Surgeons repaired a stab wound in the muscle of the right ventricle.