For and against cardiopulmonary resuscitation?

Does anyone know where i could find information regarding CPR discussing for and against the decision?

sorry forgot to say its about the older person.

There is really no reason you should not perform CPR if a persons heart is stopped unless they have expressed a desire to not be resuscitated. Otherwise, if you are doing CPR and are alone and get exhausted then no-one should judge you if you stop.