Upper Urinary Tract Obstruction Important Terms

Question 1

obstructive uropathy

Answer 1

anatomic changes in the urinary system cause by obstruction

Question 2

postobstructive diuresis

Answer 2

rapid excretion of large amounts of water, sodium, or other electrolytes, resulting in urine output of 10L/day or more after upper urinary tract obstruction is removed

Question 3

kidney stone (calculi or nephrolithiasis)

Answer 3

masses of crystals, protein, or other substances that are a common cause of urinary tract obstruction in adults

Question 4

supersaturation

Answer 4

the presence of a higher concentration of salt within a fluid than the volume of the fluid is able to dissolve to maintain equilibrium

Question 5

crystallization

Answer 5

the process by which crystals grow from a small nucleus, or nidus, to larger stones in the presence of supersaturated urine

Question 6

matrix

Answer 6

organic material (ie mucoprotein) in which the components of a kidney stone are embedded