How successful is CPR? Success rates depend on the reason the heart and breathing stopped. CPR is most effective on people who were otherwise well and who have a type of heart rhythm disturbance that responds to an electric shock. Research has shown that those with life-limiting conditions almost never recover from attempts to restart their heart and results are best if the event occurs in hospital. If CPR is particularly relevant to your care, or you are concerned to have full CPR facilities available, it may be more appropriate for you to be cared for in a hospital rather than the Hospice. St Raphael’s offers only limited CPR facilities.