A patient whose kidneys have failed completely can be kept alive by

  • A. regular blood transfusions only
  • B. a heart lung machine
  • C. dialysis or a kidney transplant
  • D. a high protein diet

Explanation

Dialysis artificially filters wastes from the blood while a transplant can restore real function. A high protein diet would worsen the accumulation of urea, so it is contraindicated.

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