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.
Patients may experience a symptom of popping called a mechanical symptom.. This may feel as though something is caught within the knee and is popping as the knee bends back and forth. This type of popping symptom is often a sign of a meniscus tear or a loose piece of cartilage within the joint. The torn meniscus or loose cartilage may catch in the knee as it moves back and forth causing a popping sensation.