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Flashcards in Definitions Deck (12)
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1

Urine flow greater than normal. (>1mL/min) in an adult

diuresis

2

urine flow greater than normal due to the presence of an unreabsorbed solute in the urine. (like glucose in a diabetic)

osmotic diuresis

3

urine flow greater than normal due to decreased reabsorption of water. (typically due to excess intake of water/alcohol) Urine would be LESS osmotic than plasma.

water diuresis

4

urine flow less than normal (<0.5mL/min) in an adult. This would be hyperosmotic urine relative to plasma

antidiuresis

5

concentration of discrete particles in solution expressed as mOsm/Kg H2O. It is independent of the charge, mass, or size of particle.

osmolality (concerned with the number of particles in the water!!)

6

number of particles PER LITER OF TOTAL SOLUTION

osmolarity (pertains to fluid)

7

a solution that is equal to the osmolality of the reference solution, which in our case is usually plasma (290 mOsm)

isosmotic

8

a solution with an osmolality greater than that of plasma

hyperosmotic

9

what is the normal osmolality of plasma?

290mOsm

10

what is the maximum osmolality possible for the urine of an adult human?

1200 mOsm

11

A solution with an osmolality less than plasma?

hyposmotic

12

What is the cutoff for low osmolality?

<50 mOsm