Acute kidney injury
Acute renal failure
Acute tubular necrosis
Chronic kidney disease
Estimated glomerular filtration rate
Glomerular filtration rate
National Confidential Enquiry into Patient Outcomes and Death


Afferent arteriole: Blood vessel supplying the glomerulus with blood.  Dilated by PGE2.
Efferent arteriole:  Blood vessel draining blood from the glomerulus.  Constricted by angiotensin II.
Glomerulus: The ‘filtration unit’ of the kidney.  Approximately 1 million in total.  Comprised primarily of a ‘tuft’ of specialised blood vessels, the walls of which comprise the ‘barrier’ across which filtration takes place.

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