Contemporary resuscitation situations are basically the result of our failure to measure and define death precisely. Although the stopping of the heart is a good indicator that death is near and practically inevitable, it doesn't mean someone has actually already died; it's possible for the heart to be restarted. So I don't think there are any parallels between actual resurrections and resuscitations.
As for the actual resurrection cases we hear about in the bible, at least some of these are genuine resurrections (if we assume they actually occurred). Lazarus had been dead for four days and his body already smelled. Thus this is clearly different from resuscitation.
How is Jesus' resurrection different from those of Lazarus, the children Elijah and Elisha raised from the dead, etc? For one, there are the causes. Those people were raised from the dead because G-d decreed it. Jesus arose from the dead because death had no legitimate claim over him.
The second, and more significant difference between Jesus' return and the return of Lazarus and other people is the results. Others who were raised from the dead simply continued their ordinary physical existence and died again some time in the future. That wasn't the effect that Jesus' resurrection had. Jesus' resurrection resulted in his body transforming into what many call the "resurrection body". Jesus after his resurrection appears to have been able to travel effortlessly, locked doors no longer being an obstacle. He also seems able to alter his appearance. Most importantly, he is now able to enter heaven and the spiritual realms directly. Jesus' resurrection is different from Lazarus' in that Jesus was resurrected into eternal life and his body transformed into its final, eternal form; Lazarus just got his old body back which eventually died again.
The most important difference between Jesus and other people who were resurrected is what it meant. Lazarus' resurrection, as with those of the young boys resurrected by Elijah and Elisha, and other people resurrected throughout scripture point to the greatness of G-d and the legitimacy of the prophets through whom the resurrection was accomplished. The resurrection of Jesus, on the other hand, heralds the defeat of death and the arrival of eternal life.