CPR quality refers to the effectiveness and accuracy of cardiopulmonary resuscitation (CPR) techniques performed during a situation of cardiac arrest. Research in this area focuses on evaluating and improving the quality of CPR delivery in terms of compression depth, rate, recoil, hand placement, and ventilation techniques. Various studies aim to identify factors that can affect CPR quality, such as rescuer fatigue, training levels, and feedback devices, in order to enhance survival rates and outcomes for individuals experiencing cardiac arrest. The ultimate goal of CPR quality research is to improve the standard of care and increase the chances of successful resuscitation in emergency situations.