Diabetes Insipidus: Assessment and Diagnostic Exams Flashcards
1
Q
Major manifestations
A
- Polyuria – urine output greater than 250ml per hour
- Polydipsia – drinks 2L-20L of fluid daily and craves for cold water
- Urine specific gravity of 1.001 to 1.005
2
Q
Diagnostic Tests
A
- Water Deprivation Test
- Does not respond to ADH injection (only for Nephrogenic D.I.)
- Plasma level of ADH
3
Q
Diagnostic Test
The patient is weighed frequently during the test
Plasma and osmolality studies are performed at the beginning and end of the test
A
Water Deprivation Test
4
Q
Diagnostic Test
The inability to increase the specific gravity and osmolality of the urine is characteristic of D.I.
A
Water Deprivation Test
5
Q
A test is carried out by withholding fluids for 8-12hrs or until 3%-5% of the body weight is lost
A
Water Deprivation Test
