The best replacement for life support is ventilator.

The best alternatives to life support are rated as following:
★★★★★  ventilator
★  advanced life support
★  basic life support
★  breathing tube
★  intubation
★  cycle support
★  bls
★  cycle assist
★  respirator
★  euthanasia
★  no life support
★  coma
★  advance life support

Your alternative for life support is not listed? Suggest!
Speaking about life support, one probably shouldn't forget about brain death.

Other search terms related to life support and their ratings are:
★★★★★ brain death
You have in mind a companion for life support and it is not yet here? Propose!



Google Trends

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life support
ventilator
advanced life support