Kidney Diagram Image

8,068 kidney diagram stock photos, vectors, and illustrations are available royalty-free.

Reviewed by Debra Jaliman, MD on August 07, 2019 Image Source © 2014 WebMD, LLC. All rights reserved. The kidneysare a pair of bean-shaped organs on either side of your spine, below your ribs and behind your belly. Each kidney is about 4 or 5 inches long, roughly the size of a large fist. The kidneys’ job is to filter your blood.

Labeled Diagram of the Human Kidney. The renal medulla comprises a set of 8-18 conical structures called renal pyramids that are surrounded by the cortex. Portions of the cortex between two adjacent pyramids are termed as renal columns. Spread in these pyramids and the cortex, are the functional units callednephrons.

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Oliguria Acute Kidney Injury

If the kidney concentration is impaired and the patient can achieve a specific gravity of only 1.010, oliguria is present at urine volumes <1000–1500 mL/day. In an attempt to standardize the diagnosis of acute renal failure, the new terminology acute kidney injury (AKI) was coined. Classifying AKI as oliguric or nonoliguric on the basis of daily urine excretion has prognostic value. Oliguria is defined as a daily urine volume of less than 400 mL and has a worse prognosis. Anuria is defined as a urine output of less than 100 mL/day and, if abrupt in onset, suggests bilateral obstruction or catastrophic injury to both kidneys. (Approximately 50-60% of all causes of AKI are nonoliguric.) This lack of a uniform clinical presentation reflects the variable nature of the injury. Classifying AKI as oliguric or nonoliguric on the basis of daily urine excretion has prognostic value. Oliguria is defined as a daily urine volume of less than 400 mL and has a worse prognosis.

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