A previously healthy 20-year-old man is brought to the emergency department because of a 36-hour history of fever and profuse, watery diarrhea. He appears lethargic. His temperature is 38.1°C (100.6°F), pulse is 115/min, respirations are 25/min, and blood pressure is 90/58 mm Hg. Examination shows sunken eyes and dry mucous membranes. Capillary refill time is 3 seconds. Abdominal examination shows no abnormalities. Which of the following physiologic changes in kidney function would be most likely in this patient?

Question

A previously healthy 20-year-old man is brought to the emergency department because of a 36-hour history of fever and profuse, watery diarrhea. He appears lethargic. His temperature is 38.1°C (100.6°F), pulse is 115/min, respirations are 25/min, and blood pressure is 90/58 mm Hg. Examination shows sunken eyes and dry mucous membranes. Capillary refill time is 3 seconds. Abdominal examination shows no abnormalities.  Which of the following physiologic changes in kidney function would be most likely in this patient?

Quizplus · Accepted Answer

Eductional Objective: Compensatory mechanisms for hypovolemia include activation of the renin-angiotensin-aldosterone system and increased antidiuretic hormone release.  This results in increased renal sodium, chloride, water, and urea reabsorption with increased potassium excretion.

A Previously Healthy 20-Year-Old Man Is Brought to the Emergency