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.
If you have a lump behind your knee that's filled with fluid and causes a feeling of tightness, it might be a Baker's cyst. Doctors also call it a popliteal cyst. Swelling in the knee. This happens when the fluid that lubricates your knee joint increases. When pressure builds up, fluid squeezes into the back of the knee and it creates the lump or cyst. Itâs common with all forms of arthritis. A Bakerâs cyst can also be brought on by a sports-related injury or blow to the knee. Gout is another common cause.