Final answer:
The expected laboratory values for a 24-year-old man diagnosed with acute kidney injury as a result of severe hemorrhaging after a motor vehicle collision would be low urinary osmolality and high urinary sodium concentration. The correct option is A .
Step-by-step explanation:
The expected laboratory values for a 24-year-old man diagnosed with acute kidney injury as a result of severe hemorrhaging after a motor vehicle collision would be low urinary osmolality and high urinary sodium concentration (option A).
Acute kidney injury (AKI) is characterized by a sudden decrease in kidney function, resulting in the inability to remove waste products and excess fluids from the body. In this scenario, severe hemorrhaging after a motor vehicle collision has led to a decrease in blood volume and subsequent low blood pressure.
Low blood pressure causes a decrease in the glomerular filtration rate (GFR), which is the rate at which blood is filtered by the kidneys. When the GFR decreases, less water is reabsorbed by the kidneys, leading to a decrease in urinary osmolality. Additionally, the low blood pressure triggers a compensatory mechanism that increases the secretion of sodium (Na+) in the urine, resulting in a high urinary sodium concentration.
Therefore, the expected laboratory values for this patient would be low urinary osmolality and high urinary sodium concentration.