A patient presents with a urine flow (V), of 12 L/day. You find that plasma osmolality (P_OSM) is above normal and that plasma AVP levels are very low. Based on this information, and given the following choices, what is your best diagnosis for this patient? A) Hypothalamic (central) diabetes insipidus B) Nephrogenic diabetes insipidus C) Diabetes mellitus D) Polydipsic diabetes insipidus E) Diabetes macula densa

Question

Quizplus · Accepted Answer

The patient's symptoms of high urine output (polyuria) with low plasma AVP (antidiuretic hormone) levels and high plasma osmolality suggest a deficiency in AVP production or release, characteristic of central diabetes insipidus.

A Patient Presents with a Urine Flow (V), of 12