Allow your hand to come off the chest slightly. Not so much that you lose your position but just enough to ensure that you are not applying pressure.
Allow full reco ilof the chest but maintain skin to skin contact
After the compression is applied, your hands should rest on the chest with no force. The chest will recoil by itself. Your hands should not lift from the chest when it rebounds.
weight off from the victims chest
After you compress or push down onto the chest, let your weight come completely off of the patients chest. You can leave your hand on there but make sure that you arent depressing the chest.
Easy. When you lift your hands up at the end of a chest compression, you can feel when your hands are very nearly not pressing down. Then you start another compression. You are doing it right if you are sort of bouncing up and down on the patient's chest, sort of like performing CPR on a large rubber ball. Around 40 compressions per minute or even faster is good for the patient, and minimizes your own fatigue.
Compression depth does not affect the recoil ability of the chest; compress 1/2 to 1 inch for infant, 1 to 1 1/2 inches child and 2 inches for an adult.
The chest will recoil after compressions automatically. Just make sure that when the chest recoils, your arms are not resisting the recoil, e.g. your hands should be resting on the chest during the recoil, without coming off the chest.
During CPR when you are compressing the chest, when you lift up from the chest it is called a recoil, it allows the blood to go through the heart. If you don't give it time to recoil ( allow the blood to go through the heart) than you are not doing any good for the patient or any good for yourself you are pushing yourself to hard and leaves the patient in danger.
Since pushing on the chest is compressing the heart between the sternum and spine, you must let the chest recoil to allow the blood to re-fill the chambers before compressing the chest (pumping the heart) again.
Chest compression involves flexing and extension of the arm muscles.
Tell the compressor you notice decreased chest
It is not important to wait for the chest to come back to its original position after each compression