You should deliver chest compressions to an unconscious adult patient in cardiac arrest by:

You need to clarify the question. For a Healthcare provider chest compression are done on the chest slightly to the left and down. They must be at a depth of 2 inchs, a rate of 100-120 per minute, a comp to vent ratio of 30:2, with adequate and equal rise and fall of chest, and allowing for adequate cheat recoil. Distraction should be limited to 10 sects and under