[Wolfstar]

Does anyone have any statistics on the number of deaths each year in the US involving the removal of life sustaining measures to include feeding tubes, ventilators, dialysis machines, etc?

Not precisely what you asked for, but here's a link to a Washington Times article that begins with the following paragraph:

"Terri Schiavo's medical condition is not particularly rare -- an estimated 30,000 to 45,000 patients in the United States are being kept alive in persistent vegetative states through feeding tubes."

If just one percent of those patients die from removal of life sustaining measures, that's about 300 to 450 individuals per year.

[Wolfstar]

PS to my #3,959: Read the language of the WT times paragraph carefully. It refers to an estimated 30-45,000 patients currently being kept alive in PVS in the U.S. through feeding tubes. In other words, cases just like Schiavo's.

The figure apparently does not include all the other forms of mechanical life sustaining measures you mentioned. I emphasize "mechanical," because drugs, surgery, and many other medical treatments are also life-sustaining measures.