How sodium affects heart disease patients?

sodium and water act together in the vascular system. "Water follows salt" So, too much sodium causes water retention, thus increasing the blood pressure. Obviously high blood pressure affects the heart, and can cause aneurysms, not only in the brain, but in the aorta as well. Too much pressure causes a weakening in the vessel wall and can cause an outpouching (aneurysm). If blood pressure isn't controlled then the aneurysm can burst - fatal if not caught by doctors early.

makes you retain water.
'High Blood Pressure' and
also very bad to kidney.
calcium and potassium acts directly on heart
in the same way i think sodium also acts on heart ...........
it will affect heart patients as it may accumulate and can accumulate as renal stones
self
like when cooking Steak you do not but salt till the meat is cooked. It would make meat hard. So salt contributes to hardening of arteries and that is not good for us.
Raises your blood pressure.