Nephrology certified in nephrology is called a "nephrologist". The term "nephrology" was first used in about 1960. Before then, the specialty was usually referred to as "kidney medicine." Nephrology concerns the diagnosis and treatment of kidney diseases, including electrolyte disturbances and hypertension, and the care of those requiring renal replacement therapy, including dialysis and renal transplant patients. Many diseases affecting the kidney are systemic disorders not limited to the organ itself, and may require special treatment. Examples include acquired conditions such as systemic vasculitides (e.g. ANCA vasculitis) and autoimmune diseases (e.g., lupus), as well as congenital or genetic conditions such as
Johnson Organs H. Johnson, who had worked in the shop since he was 16, became an official member of the firm. With a new name, "Johnson and Son", the company was back in operation soon enough to produce 52 new organs in Chicago, Illinois, after the 1871 Great Chicago Fire. A new factory was built in 1873, and another in the mid-1880s. Johnson and Son continued the work of the William A. Johnson Organ Company, building an additional 500 organs. Their largest organs were of around 55 ranks. Throughout the years, Johnson organs were well known for their "excellent balance, splendid dignity,