Which one of the following is the current correct ratio of chest compressions to rescue breaths that must be carried out during cardiopulmonary resuscitation on a casualty?

During cardiopulmonary resuscitation (CPR), the correct ratio of chest compressions to rescue breaths for adults is 30:2. This means that after every 30 compressions done at a rate of 100 to 120 compressions per minute, the rescuer should give 2 rescue breaths. This method has been established to ensure that there is minimal interruption in chest compressions, which are critical for maintaining blood flow to vital organs during cardiac arrest. The 30:2 ratio is recommended because it strikes a balance between providing effective cardiopulmonary resuscitation and allowing for adequate ventilation, which is essential for supporting the patient’s ability to breathe.

For children and infants, there are variations in the recommended ratios, reflecting the different physiological needs of these age groups. Understanding the significance of this ratio is important for effective CPR, as adequate compressions combined with rescue breaths can make a significant difference in the outcomes for patients experiencing cardiac arrest.