Urinalysis - Urine Volume Flashcards
1
Q
What is the normal daily urine volume?
A
600-2,000 mL
(average 1200-1500 mL)
2
Q
What is the normal day-to-night ratio for urine volume?
A
2:1 to 3:1
3
Q
What is diuresis?
A
increased urine production
4
Q
What is polyuria?
A
marked increased in urine flow
Adults: >2500 mL/day
Children: 2.5-3 mL/kg/day
5
Q
What is oliguria?
A
marked decrease in urine flow
Adult: <400 mL/day
Children: <0.5 mL/kg/hr
Infants: <1 mL/kg/hr
6
Q
What is anuria?
A
no urine production
7
Q
Why does urine volume increase with diabetes insipidus?
A
lack of antidiuretic hormone (ADH)
