The best replacement for defibrillation is cardioversion.

The best alternatives to defibrillation are rated as following:
★★★★★  cardioversion
★★  synchronized cardioversion
★  monophasic
★  paddles
★  fibrillation
  unsynchronized cardioversion
  cardioversion monophasic
  cpr
  cardioversion)
  biphasic defibrillation
  electrical cardioversion

Your alternative for defibrillation is not listed? Suggest!
Speaking about defibrillation, one probably shouldn't forget about cpr.

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



Google Trends

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defibrillation
cardioversion
synchronized cardioversion