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The causes of acute kidney injury are commonly categorized into prerenal, intrinsic, and postrenal. Acute kidney injury occurs in up to 30% of patients following cardiac surgery. [22] Mortality increases by 60-80% in post-cardiopulmonary bypass patients who go on to require renal replacement therapy.
Acute pyelonephritis is an exudative purulent localized inflammation of the renal pelvis (collecting system) and kidney. The kidney parenchyma presents in the interstitium abscesses (suppurative necrosis ), consisting in purulent exudate (pus): neutrophils, fibrin, cell debris and central germ colonies (hematoxylinophils).
Once the acute phase of the nephritic syndrome is controlled, it is crucial to determine the underlying pathology that caused the onset of the acute nephritic syndrome and to treat that condition. If the underlying cause is not determined and treated appropriately, it increases the risk of a recurrence of nephritic syndrome or chronic kidney ...
In terms of cause, almost any condition that involves ischemia can lead to renal papillary necrosis. A mnemonic for the causes of renal papillary necrosis is POSTCARDS: pyelonephritis, obstruction of the urogenital tract, sickle cell disease, tuberculosis, cirrhosis of the liver, analgesia/alcohol use disorder, renal vein thrombosis, diabetes mellitus, and systemic vasculitis. [3]
Acute kidney injury (AKI), previously called acute renal failure (ARF), [12] [13] is a rapidly progressive loss of renal function, [14] generally characterized by oliguria (decreased urine production, quantified as less than 400 mL per day in adults, [15] less than 0.5 mL/kg/h in children or less than 1 mL/kg/h in infants); and fluid and ...
Nephritis can often be caused by infections and toxins, but it is most commonly caused by autoimmune disorders that affect the major organs like kidneys. [5]Pyelonephritis is inflammation that results from a urinary tract infection that reaches the renal pelvis of the kidney.
CVA tenderness is often present in acute pyelonephritis. [ 5 ] [ 4 ] [ 6 ] [ 7 ] CVA tenderness may be present in patients who have a kidney stone , [ 8 ] [ 7 ] a stone in the ureter , [ 8 ] a ureteropelvic junction obstruction, [ 8 ] a kidney abscess , [ 8 ] a urinary tract infection , [ 9 ] and vesicoureteral reflux . [ 10 ]