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
Four Organs Four Organs Four Organs is a work for four electronic organs and maraca, composed by Steve Reich in January 1970. The four organs harmonically expound a dominant eleventh chord (E–D–E–F–G–A–B), dissecting the chord by playing parts of it sequentially while the chord slowly increases in duration from a single 1/8 note at the beginning to 200 beats at the end. The process of increased augmentation is accomplished first by causing notes to sustain after the chord, and then notes start anticipating the chord. As the piece progresses, this "deconstruction" of the chord emphasizes certain harmonies. At the climax of the