Question

Three images of a red blood cell are shown above. A patient is admitted to the hospital and is administered IV solutions to counteract dehydration. What image depicts the most likely impact on the red blood cells of the patient when the IV is administered? A) Image I because the IV solution will increase the red blood cells' ability to regulate water transport. B) Image II because the IV solution will be isotonic to the patient's blood, preventing water loss of lysis of the cells. C) Image III because the IV solution is hypertonic to the red blood cells due to the presence of medicine in the solution. D) Image III because the IV solution will increase the number of aquaporins in the plasma membrane of the patient's red blood cells. Eliminate

Answer 1

B) Image II because the IV solution will be isotonic to the patient's blood, preventing water loss of lysis of the cells.

Explanation:

The IV fluids that are replaced during dehydration are isotonic fluids to reduce hypovolemic shocks and to correct the electrolyte imbalance.

The IV fluids like 0.9% NaCl solution, lactated Ringer’s solution, 5% dextrose water or D5W solution are all isotonic.

Dehydration will increase plasmolysis of cells due to water loss and contraction of cells takes place. Isotonic solutions expand the intravascular space but maintain its osmolarity with that of the serum osmolarity.