The method of delivering chest compressions remains the same, as does the rate (at least 100 per minute). It is hoped that the use of compression-only delivery will increase the chances of the lay public delivering CPR.
Much like when crack your knuckles, loud popping noises from your knees are most likely caused by what is called cavitation. Cavitation results from a change in joint pressure that allows carbon dioxide, which is normally dissolved in your joint fluidâa.k.a.
Escaping gases, movement and rough surfaces. Your joints can make a variety of sounds: popping, cracking, grinding, and snapping. The joints that crack are the knuckles, knees, ankles, back, and neck. There are different reasons why these joints sound off. Escaping gases: Scientists explain that synovial fluid present in your joints acts as a lubricant.