commonly caused by bacterial infection that has spread up the urinary tract or travelled through
the bloodstream to the kidneys. In other words, pyelitis together with nephritis is collectively
known as pyelonephritis.
- (d)
- (a) Glucosuria occurs when the capacity of the kidney to tolerate blood glucose is exceeded in
the blood. This is known as renal threshold for glucose, the value for which is 180 mg/100 ml of
blood. If the glucose concentration in the blood exceeds this value, it is excreted in urine. At 180
mg/100 ml of blood glucose the kidney reabsorbs 350 mg of glucose per minute, this is known
as tubular maximum for glucose (T-G). Any amount of glucose being filtered by the glomerular
filtrate more than this into the kidney per minute is excreted.
