An End-Stage Renal Disease Patient Has Been on Peritoneal Dialysis

An end-stage renal disease patient has been on peritoneal dialysis at home. Based on his lab work, he regulates the type of solution to infuse into his abdomen. When there is a high concentration of potassium inside the cell (hyperkalemia) , the solution infused has a lower concentration so that the potassium ions will diffuse outward. At this point, the cellular membrane is said to be

A) at equilibrium potential in which no net movement of ions occurs.
B) charged with high voltage.
C) filled with positive current.
D) polarized because of the presence of a negative membrane potential.

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