Final answer:
The action by a dialysis nurse to prevent blood clotting during hemodialysis is the addition of heparin to the patient's blood.
Step-by-step explanation:
To prevent blood clotting during hemodialysis, a dialysis nurse would add heparin to the blood. This is because heparin is an anticoagulant that helps prevent clots from forming during the procedure. Therefore, the correct action by the nurse to prevent blood clotting during hemodialysis for a patient with chronic kidney disease is A. Addition of heparin to the blood. While dextrose, icodextrin, and saline solution have respective uses during dialysis, they do not serve the purpose of preventing blood clotting.
The action by the nurse that will prevent blood clotting during the hemodialysis procedure is the addition of heparin to the blood. Heparin is an anticoagulant that helps to prevent blood clot formation while the blood is being filtered externally. By inhibiting the clotting cascade, heparin ensures that the blood can flow smoothly through the hemodialysis machine without clotting.