As far as the tube goes...if its a G-tube...then its not technically a machine...but its a tool that provides life support. Without it...the patient dies. However, the IV's are driven by a machine...and that is what keeps him hydrated and medicated. Either way...its life support on someone who would die now...or 5 years from now...without it.
What's the difference between that (G-Tube) and a fork/spoon??? It's definitely NOT life support, unless you consider a fork, life support as well.