TLS Online TPP Program

#Question id: 12075


A 48-year-old woman complains of severe polyuria (producing about 0.5 L of urine each hour) and polydipsia (drinking two to three glasses of water every hour). Her urine contains no glucose, and she is placed on overnight water restriction for further evaluation. The next morning, she is weak and confused, her sodium concentration is 160 mEq/L, and her urine osmolarity is 80 mOsm/L. Which of the following is the most likely diagnosis?

#Unit 7. System Physiology – Animal
  1. Diabetes mellitus
  2. Diabetes insipidus
  3. Primary aldosteronism
  4.  Renin-secreting tumor