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.
Causes of Fluid on the Knee. 1  There can be the accumulation of fluid on the knee through rheumatoid arthritis or osteoarthritis. 2  There can be extra production of synovial fluid in the knee through arthritis. 3  Infection in the knee joint; the fluid on the knee is pus, and not synovial fluid.