What is the focus of each cycle of CPR?

The focus of each cycle of CPR is to ensure high-quality compressions and correct ventilation. High-quality chest compressions are critical in maintaining blood flow to vital organs during cardiac arrest. They help to provide adequate oxygenation to the brain and other organs, which is essential for survival. Correct ventilation is equally important, as it ensures that oxygen is being delivered to the lungs and, subsequently, to the bloodstream.

In adult CPR, the emphasis is on achieving a rate of 100 to 120 compressions per minute and allowing complete chest recoil after each compression. For infants and children, the compression depth is also guided by age, ensuring that it is sufficient to maintain perfusion. Ventilations should be given effectively, utilizing either mouth-to-mouth or bag-mask ventilation, depending on the scenario and training level.

While minimizing interruptions is important, as interruptions can lead to decreased coronary perfusion pressure, the primary immediate target during each cycle remains the quality of compressions and the efficacy of ventilations. Frequent reassessment and adjusting the quality of these components are necessary to maximize the chance of resuscitation.