​Seeing a patient die under his hands because there is no adequate treatment causes an emotion and a frustration in a doctor which sometimes stimulates him to try to develop a new type of treatment. Seeing so many wounded young soldiers die of renal failure in World War 1 incited the German doctor Georg Haas to try to develop an artificial kidney, but he had to give up in despair in 1928.

Ten years later doctor Willem Kolff saw a young man die of renal failure in his ward in the University Hospital of Groningen, The Netherlands. By that time two essential elements of an artificial kidney had become available: a drug to prevent the blood from clotting outside of the body, and an efficient dialysing membrane through which waste substances can pass from the blood into the dialysing fluid. Kolff succeeded in creating the rotating artificial kidney, which he began using in the town hospital of Kampen in 1943. The rotation of this artificial kidney started a revolution that made it possible for thousands of kidney patients all over the world to keep on living - and sometimes to forget their disease for the time being. In addition it gave rise to the development of other artificial organs such as the heart-lung machine, the artificial heart and the artificial eye.

Doctor Jacob van Noordwijk, the author of this book, was Kolffs first assistant in the treatment of the first 15 patients. How Kolff succeeded, in spite of all the limitations imposed by the German occupation of the Netherlands and in spite of the absence of antibiotics and other medical tools which are now common, makes a story which may sound incredible. Yet it did happen, and visitors to the town of Kampen can still see the hospital building where it all took place.