Diabetes insipidus Quiz: Ace Your Exams

Get ready to dominate your medical and nursing exams by using our dynamic quizzes to elevate your knowledge and increase your confidence. Whether you're gearing up for the USMLE®, COMLEX®, or your next in-class assessment, Osmosis quizzes tackle key topics in pathology, diagnostics, and treatment approaches. By honing in on clinical readiness and decision-making, we make sure the knowledge you gain empowers you both in the classroom and in real-world practice. Jump in and supercharge your exam prep!

Learning videos

Flashcards

Expert reviewed

Spaced Repetition

Mobile app

Custom Quizzes

1 of 4

A 56-year-old man is found unconscious in his apartment by a neighbor who calls emergency services. Upon arrival at the emergency department (ED), the patient is confused and somnolent. The patient’s full medical history is not known, but the neighbor states that the patient has a history of psychiatric illness. Temperature is 37.0 ℃ (98.6 ℉), heart rate is 116/min, respiratory rate is 14/min, blood pressure is 98/60 mmHg, and oxygen saturation is 97% on room air. On examination, dry mucous membranes and significantly decreased skin turgor are noted. Cardiopulmonary and abdominal examinations are unremarkable. Neurologic examination is nonfocal. A urinary catheter is placed and a large amount of clear yellow urine is evacuated. Initial laboratory tests are listed below. The ED physician initiates fluid resuscitation and insulin therapy for a suspected diagnosis of hyperosmolar hyperglycemic state. Which of the following is most likely the correct diagnosis, and based on that diagnosis, what changes should be made to the initial treatment?

Laboratory study	Result	Reference range
Serum sodium	154 mEq/L	136-146 mEq/L
Serum glucose	136 mg/dL	70-110 mg/dL
Serum osmolality	320 mOsm/kg	275-295mOsm/kg
Serum beta-hydroxybutyrate	<0.05 mmol/L	<0.05 mmol/L
Lactic acid	3.1 mmol/L	0.5-2.2 mmol/L
Urine osmolality	110 mOsm/kg	50-1,200 mOsm/kg

Elimination tool

Choose an option:

Hyperosmolar hyperglycemic state; insulin should be held until the sodium is corrected.

Hyperosmolar hyperglycemic state; current management should be continued.

Diabetes insipidus; fluid resuscitation is appropriate.

Psychogenic polydipsia; water restriction should be instituted.

Syndrome of inappropriate antidiuretic hormone secretion; water restriction should be instituted.