An unpleasant sensation in the stomach usually accompanied by the urge to vomit.

Inflammation of the kidney. A disease of the kidneys haematuria associated with a nephritic syndrome that includes hematuria as its distinguishing component. Other classic symptoms include hypertension, renal insufficiency, volume overload, oedema, and in some cases, proteinuria.

A physician who specializes in kidney diseases and their treatment.

The structural and functional unit of the kidney. It consists of a glomerulus enclosed within Bowman's capsule and its attached tubule (consists of proximal convoluted tubule, loop of Henle and distal convoluted tubule). Urine is formed by filtration in the glomerulus, and selective reabsorption and secretion by cells of the renal tubule.

The fraction of extracellular solute volume removed per unit of ultrafiltrate volume.