OK, our heart is a pump and when pumping to your legs and feet it can have a hard time - hence the build up of fluids in your feet.
So, if I had my leg amputated from the knee down and got a fancy false leg - would I be allowing my heart to beat stronger for other parts of my body - extending it's life and improving my QoL.
No, amputation actually can cause a cardiac event! Criteria usually are long term none healing ulcers (these can then cause sepsis), unbearable pain or gangarene.
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Why do medical professionals treat you like your stupid! 
Numb feet.
Low Heart Rate and Cold Feet
Sort of new but not
Angina question
