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Acute kidney injury. Pathologic kidney specimen showing marked pallor of the cortex, contrasting to the darker areas of surviving medullary tissue. The patient died with acute kidney injury. Acute kidney injury (AKI), previously called acute renal failure (ARF), [ 1 ][ 2 ] is a sudden decrease in kidney function that develops within 7 days, [ 3 ...
Intrarenal acute kidney injury. Acute kidney injury, or AKI, is when the kidney isn’t functioning at 100% and that decrease in function usually over a few days. Actually, AKI used to be known as acute renal failure, or ARF, but AKI is a broader term that also includes subtle decreases in kidney function. Intrarenal, or sometimes intrinsic AKI ...
Acute tubular necrosis is classified as a "renal" (i.e. not pre-renal or post-renal) cause of acute kidney injury. Diagnosis is made by a FENa (fractional excretion of sodium) > 3% and presence of muddy casts (a type of granular cast) in urinalysis. On histopathology, there is usually tubulorrhexis, that is, localized necrosis of the epithelial ...
Normal or Postrenal (after the kidney) Normal range. Can also be postrenal disease. BUN reabsorption is within normal limits. <12:1 <40:1 Intrarenal (within kidney) Renal damage causes reduced reabsorption of BUN, therefore lowering the BUN:Cr ratio. Decreased ratio indicates liver disease (due to decreased urea formation) or malnutrition. [4]
Kidney ischemia [1] is a disease with a high morbidity and mortality rate. [2] Blood vessels shrink and undergo apoptosis which results in poor blood flow in the kidneys. More complications happen when failure of the kidney functions result in toxicity in various parts of the body which may cause septic shock, hypovolemia, and a need for surgery. [3]
Renal azotemia (acute kidney failure) typically leads to uremia. It is an intrinsic disease of the kidney, generally the result of kidney parenchymal damage. Causes include kidney failure, glomerulonephritis, acute tubular necrosis, or other kidney disease. [3] The BUN:Cr in renal azotemia is less than 15.
Pathophysiology. [] Hydronephrosis is caused by obstruction of urine before the renal pelvis. The obstruction causes dilation of the nephron tubules and flattening of the lining of the tubules within the kidneys which in turn causes swelling of the renal calyces. [ 4 ] Hydronephrosis can either be acute or chronic.
The patient died with acute kidney injury. Kidney disease, or renal disease, technically referred to as nephropathy, is damage to or disease of a kidney. Nephritis is an inflammatory kidney disease and has several types according to the location of the inflammation. Inflammation can be diagnosed by blood tests.