Edited sentence: Another autopulse trial against manual cpr here noted that the autopulse was harmful compared to manual CPR with the survival rate dropping from 10% with manual CPR to 6% with the autopulse.Often called thumpers, these devices have been around for 40years, and will soon be phased out.The autopulse device does have its problems as seen here, in the case of Riverside County Has Suspended Use of AutoPulse Jacket, where a 77yo man was subjected to the autopulse and later died from cracked ribs and internal injuries.The autopulse is purely mechanical, and so with no feedback will actually be detrimental to patient safety