Polyuria Interview

Question 1

What is the first step in interviewing a patient with polyuria?

Answer 1

Differentiate from frequency, urgency, or nocturia

Question 2

What is a common associated feature of polyuria?

Answer 2

Polydipsia

Question 3

What is primary polydipsia?

Answer 3

Also called psychogenic polydipsia

Due to increase in intake of water

Question 4

What is primary polydipsia most commonly associated with?

Answer 4

Anxiety

Question 5

What is secondary polydipsia?

Answer 5

Due to

• Osmotic diuresis
• Decreased secretion of ADH
• Resistance to ADH

Question 6

Which type of polydipsia is more common: primary or secondary?

Answer 6

Secondary

Question 7

What is central diabetes insipidus?

Answer 7

Decreased secretion of ADH

Question 8

What is nephrogenic diabetes insipidus?

Answer 8

Resistance to ADH